Paper Manufacturing (U.S.) — NAICS 322

A Histometrics rollup primer for public- and private-market investors. NAICS (the North American Industry Classification System) is the U.S. government's standard scheme for grouping businesses. Code 322 is a three-digit subsector inside Sector 32 (Manufacturing); it holds two four-digit children — 3221 Pulp, Paper, and Paperboard Mills and 3222 Converted Paper Product Manufacturing. This page synthesizes the two child primers plus our federal ground-truth statistics for the combined level; it does not re-research from scratch. Figures are the most recent federal data available; forward-looking statements are framed as judgments, not facts.

1. Overview

Subsector 322 is the manufacturing core of the American paper economy — the two-step chain that turns trees and recovered paper into every fiber product physical commerce runs on. Step one is the mill (child 3221): giant, continuously running machines that convert wood and recycled fiber into pulp, paper, and paperboard "parent rolls." Step two is converting (child 3222): the far larger population of plants that buy those rolls and cut, print, coat, and glue them into finished things — the shipping box, the cereal carton, the grocery bag, the paper towel, the envelope, the molded-fiber egg tray.

Two boundaries matter. Upstream, 322 stops at the mill gate — it does not include the forestry and logging (NAICS 113) that grow and cut the trees. Downstream, it stops at the converted product — printing on that paper is a separate subsector (NAICS 3231, Printing), and the retailers and manufacturers who fill the boxes are elsewhere entirely. So 322 is best read as "the U.S. paper value chain's factory floor," not "the paper economy."

For an investor the distinctive value of looking at 322 as a group is the contrast between its two children — an upstream, capital-heavy, commodity, heavily-regulated mill business versus a downstream, plant-dense, spread-earning, lightly-regulated converting business — plus the one force that stitches them together: vertical integration. The same handful of majors own both the mill and the box plant, which is exactly why the two children behave differently on paper yet share owners, cycles, and fortunes in practice. One nuance the revised child primers make unavoidable: the contrast repeats inside each child. The mill side is itself three businesses on opposite trajectories (declining paper, growing paperboard, cyclical merchant pulp), and the converting side is four (a defensive giant in paperboard containers, a structural grower in bags and coated papers, a two-speed tissue-and-molded-fiber child, and a shrinking stationery child). Section 2 lays the contrast out in a single table; the rest of the primer treats the subsector as a whole.

2. What's inside — the two children and how they differ

Both children are manufacturing, and both are dominated by the same recurring integrated companies. What separates them is where in the value chain they sit — and that one difference cascades into scale, capital intensity, concentration, economics, and regulation. All federal figures below are from this level's ground truth (Section 3).

HHI = the Herfindahl-Hirschman Index, a 0–10,000 concentration gauge (the sum of squared market shares; under ~1,500 is "unconcentrated"). CR4 = the four-firm concentration ratio, the combined revenue share of the four largest firms. Tickers are introduced in Section 4.

Three read-throughs from the table:

1. Converting is bigger by count; mills are bigger by ton and by dollar-per-plant. Converting is roughly two-thirds of the subsector's revenue and three-quarters of its employment, spread across eight times as many establishments as the mill side. But each mill is a ~$205-million asset versus ~$40 million for a converting plant, and a mill worker generates nearly twice the revenue of a converting worker (~$909k vs ~$529k) — the signature of a heavier, more automated, more capital-intensive upstream step.[1][2] Note also that "converting" is mostly one thing: paperboard containers are ~62% of that child, and corrugated boxes alone (~$57.2B) are roughly two-fifths of it.[1] The subsector's headline behavior is largely corrugated's behavior.
2. Concentration is a mixture at this level, not a measurement. The subsector HHI of 348 is not "the concentration of paper manufacturing" — it is an average across markets whose participants never meet. The mill child scores 665 and the converting child 230, so 322 sits between them; go one rung further and the real markets appear (merchant pulp ~2,005, paperboard mills ~1,461, paperboard containers ~536), and one rung further still the grades are tighter again (corrugated boxes CR4 52.1%, sanitary paper CR4 47.8%, and uncoated freesheet roughly 80% four-firm despite its child's "unconcentrated" 617).[1][7] A screener reading 322's HHI would badly misjudge competition in every product inside it. Judge grade-by-grade.
3. The two steps share owners, not just a supply chain — and the numbers now show it. The leaders straddle both children: International Paper converts about 75% of its North American paper production internally [10], and the corrugated converting layer alone consumed 31.2 million tons of containerboard in 2024 [9] — mill output and converting demand are the same tons counted twice, once on each side of the NAICS line. That vertical integration (Section 5) is the source of margin advantage, the engine of the consolidation story (Section 8), and the reason the crisp line between "mill" and "converter" blurs in the real world.

3. Size (this level's rollup figures)

Ground-truth U.S. federal statistics for NAICS 322 as a whole:

County Business Patterns (CBP) is the Census Bureau's annual employer-business dataset; the Economic Census is the every-five-years full count.

The two children add up cleanly — a sign the data is solid. Establishments (402 + 3,411 = 3,813) and employment (90,792 + 260,693 = 351,485) sum exactly to the subsector; receipts ($82.5B + $137.8B ≈ $220.3B) and payroll ($8.56B + $17.93B ≈ $26.48B) reconcile to within rounding.[1][2] At ~$220 billion across ~3,800 establishments and ~2,300 firms, the subsector averages roughly $58 million of shipments per establishment and $96 million per firm — heavy factory scale, no cottage trade. Pay averages ~$75,000, above the U.S. manufacturing norm, reflecting skilled, largely unionized, round-the-clock process work (higher still on the mill side, ~$94k, than in converting, ~$69k).[2]

One firm-count subtlety worth its own line — and it repeats at every rung. The two children list 2,353 firm-slots (156 mills + 2,197 converters) but the subsector counts only 2,301 distinct firms [1]. The 52-firm gap is not an error: it means at least 52 companies operate in both the mill and converting children — the fully integrated producers (International Paper, Georgia-Pacific, Smurfit WestRock, Packaging Corporation of America, and peers) that make the paperboard and the box and get counted once here but in each child they touch. The revised child primers show the same pattern one level down: 14 firms straddle the three mill industries and 57 straddle the four converting children [1]. Multi-market operation is the structural norm in this subsector, not the exception (see Sections 5 and 8).

Undercount caveat — read before quoting these numbers. These figures are honest but bounded, and the usual "missing small operators" warning is only mildly relevant here:

• Little small-owner undercount. This is capital-intensive, plant-based manufacturing dominated by well-documented companies; pulp and paper is often cited as the most capital-intensive sector in U.S. manufacturing, spending on the order of $130,000 per employee per year on plant and equipment, with a single modern mill costing well over $800 million [7]. The only place coverage thins at all is the long tail of independent converters — box plants, envelope shops, tube-and-core operators inside 3222 — and even those are formal, payrolled factories, so the effect is modest, not the large informal-sector gap seen in service trades.
• It excludes the rest of the chain. By definition 322 counts only manufacturing. Upstream forestry and logging (NAICS 113) that supply the pulpwood, and downstream printing (NAICS 3231) and the end-users who fill the packages, are booked separately. The paper economy is far larger than this $220 billion.
• Integrated giants' value is split across codes — and understated inside any one. Census assigns each establishment a single NAICS code by primary product, so an integrated company's value is divided between the mill child and the converting child; the same rule pushes coated, treated, and molded-fiber lines embedded inside mills into mill codes rather than converting ones. Several of the biggest makers are divisions of private conglomerates whose paper-segment revenue is never separately reported.
• Factory-gate, not retail — and lagging the cycle. These are shipment values at the plant, exclude imports, and come from the 2022 Economic Census; capacity has closed since. By tonnage, the American Forest & Paper Association (AF&PA, the industry trade body) put total U.S. paper-and-paperboard production at 66.3 million tons in 2025, down 3.7% on the year [3], with U.S. pulp output near 36 million metric tons — still the most of any country [4]. Imports matter more than they used to in at least one corner: paper shopping bags now carry antidumping orders on eight countries and countervailing duties on China and India [35]. Read 322 as "the U.S. fiber-mill-and-converting base," not "the U.S. paper market."

4. Investable universe — where value concentrates across the children

For a subsector this size the public field is remarkably thin, and it concentrates in a different corner than the raw size numbers suggest. Size says converting (63%) dominates; investability says packaging — and specifically corrugated board — is where nearly all the listed money sits, on both the mill and the converting side of the chain. The revised child primers add a second, sharper point: the listed universe is shrinking. Tickers below are context; how to actually invest is Section 10.

• Packaging is the deep, liquid public bench — and it spans both children. The paperboard mills (inside 3221) and the paperboard-container converters (inside 3222) are largely the same vertically integrated companies, listed on the New York Stock Exchange (NYSE): Packaging Corporation of America (PKG), International Paper (IP), Smurfit WestRock (SW) — the world's largest containerboard producer, formed by the July 2024 Smurfit Kappa–WestRock merger — Graphic Packaging (GPK) in folding cartons, and Sonoco (SON) and Greif (GEF) in tubes, cores, cans, and drums, plus small-cap Clearwater Paper (CLW) in bleached board and Canadian-listed Cascades (CAS) in recycled containerboard and boxboard.[5][6][13][14] Note that Greif sold its containerboard business to PKG in 2025 and now contributes recycled board, tubes, and cores rather than containerboard.[11] A general investor who buys "322" through the stock market is, in practice, mostly buying paperboard and boxes.
• Graphic paper is a near-vacuum on the public side. There is no large, clean U.S.-listed printing-and-writing-paper pure play; the closest proxy is Sylvamo (SLVM), an uncoated-freesheet maker spun out of International Paper. PKG carries a genuine but minority Paper segment (~500,000 tons at International Falls, Minnesota, about 7% of company revenue). The deepest paper assets — led by Domtar (owned by Paper Excellence), the largest U.S. maker of uncoated freesheet — are private.[7]
• Pulp is foreign-listed or private, and one U.S. door just closed. No U.S.-listed pure-play domestic market-pulp stock exists; exposure runs through Mercer International (MERC), Suzano (SUZ), Sappi (SPPJY), and specialty-cellulose maker Rayonier Advanced Materials (RYAM). (A common trap: RYAM, a pulp maker, is not Rayonier RYN, a timberland real-estate investment trust.)[8] International Paper completed its exit from merchant fluff pulp in January 2026, selling its global cellulose fibers business — seven pulp mills and two converting facilities — to American Industrial Partners for $1.5 billion, moving those assets off the exchanges entirely.[12]
• Tissue and the consumer end run through staples giants. The sanitary-paper corner of converting (tissue, towels, diapers) is owned by diversified consumer-packaged-goods majors — Procter & Gamble (PG), whose Baby, Feminine and Family Care segment turned $20.2 billion of sales inside an $84.3 billion company in FY2025, and Kimberly-Clark (KMB), whose North American segment ran $10.8 billion at roughly a 24% operating margin — where paper is one segment of a much larger business; purer plays are foreign-listed (Cascades, Essity, KP Tissue).[21][22][23]
• The smaller converting corners have essentially no listed U.S. option. Envelope and stationery leadership is private: Cenveo (private-equity owned) makes roughly one in three U.S. envelopes across 14 domestic locations.[24] Specialty coated papers, molded fiber, and private-label tissue are similarly private or foreign.
• The private map is the same handful of names, over and over. Across both children the biggest holders of American capacity you cannot buy on an exchange are Georgia-Pacific (owned by Koch) and Domtar (Paper Excellence) [8]; in board and bags, Pratt Industries — the largest 100%-recycled containerboard maker in the U.S., with six recycled paper mills — plus Green Bay Packaging and Hood Container [25]; and private-equity platforms such as Novolex/Pactiv (Apollo-backed) [17] and American Industrial Partners [12].

There is no dedicated pulp, paper, paperboard, or converted-paper exchange-traded fund (ETF); index-minded investors reach 322 through broad materials, industrials, or consumer-staples funds, and timber REITs (real estate investment trusts) — Weyerhaeuser (WY), Rayonier (RYN) — serve as an upstream fiber proxy.[8] The direction of travel is toward fewer listed options, not more: Pactiv Evergreen was taken private and delisted by Novolex in 2025, Clearwater sold its tissue business, and International Paper exited pulp.[12][17][19] The long tail of the subsector — independent box plants, regional converters, envelope and tube-and-core shops — is overwhelmingly private. Company-by-company detail lives in the two child primers; tickers, yields, and multiples are for your own diligence.

5. How the money works

The two children run different engines joined by one strategy.

• Mills earn on tons and the operating rate. Upstream profit is roughly (price per ton − cash cost per ton) × tons shipped, and the master lever is capacity utilization — the operating rate (tons produced ÷ capacity). Fixed costs are enormous: fixed cost per tonne can roughly double when a mill falls from full capacity to about half.[7] Prices are set by the cycle, not the seller — Clearwater's average realized paperboard price was $1,167 per ton in 2025, against $1,210 in 2024 and $1,375 in 2023.[14] The big cash costs are fiber (roughly 25–70% of total cost depending on integration), chemicals (another 8–25%), energy, and freight.[7]
• The two children describe the same operating rate slightly differently — worth knowing before you quote it. The mill primer reports North American containerboard averaging about 91.9% in 2025, below the ~95–96% at which producers have historically been able to push price, with printing-writing mills at 82.8%.[3][6][7] The converting primer describes the 2025 capacity pullback — roughly 10% (~3.9 million tons) taken offline, the sector's largest annual cut — as lifting operating rates toward the mid-90s.[5] Read them as a full-year average versus the exit rate after the cuts: same direction, unsettled level.
• Converters earn a conversion spread. Downstream, revenue is roughly units or tons shipped times price, and the core game is the spread between what you pay for paper/board and what you charge for the finished product. Purchased fiber is by far the largest cost — often more than half of the cost of goods sold — and contracts are usually index-linked but reset with a lag of about three months, so margins compress on the way up and recover on the way down.[16] Converting is also freight-regionalized: finished boxes and cartons are bulky and low-value-per-truck, so plants cluster near customers and shipping radii stay short. That shield is real for corrugated, tissue, and egg cartons — but not absolute: flatter, denser products travel, which is why paper shopping bags drew antidumping and countervailing duty orders.[35]
• Vertical integration is the bridge — and the edge, though not a guarantee. The margin leaders own the mill (3221) and the converting plant (3222), capturing value at both steps and buffering themselves when fiber prices swing; that is exactly why 52 firms straddle both children (Section 3). International Paper converts about 75% of its North American production internally [10], and Graphic Packaging's roughly 17–19% adjusted-EBITDA margin (EBITDA = earnings before interest, taxes, depreciation and amortization, a proxy for operating cash generation) shows the ceiling an integrated leader reaches. Even so, GPK's Americas Paperboard Packaging operating margin fell from about 17.6% in 2024 to about 13.9% in 2025 — integration cushions the spread without fixing it.[13]

The unifying levers investors watch are the same across the chain: the operating rate / capacity utilization, price per ton by grade, cash cost per ton (fiber, energy, chemicals), and the pulp-price cycle. There is no regulated-utility rate base, real-estate funds-from-operations, or mining all-in-sustaining-cost frame here — this is tons, price, spread, and how full the machines run.

6. Demand drivers

Because 322 blends the whole chain, its demand drivers partly reinforce and partly offset each other — and diverge sharply by grade.

• Packaging is the growth engine. Corrugated-box demand is a real-time proxy for how much physical "stuff" is moving; about 90% of U.S. goods ship in corrugated.[9] E-commerce is the structural tailwind — online sales reached 16.9% of U.S. retail in the first quarter of 2026, up 9.8% year over year [26] — alongside sustainability-driven plastic-and-foam-to-fiber substitution ("paperization"), which pulls demand toward boxes, folding cartons, paper bags, coated barrier papers, and molded fiber. The simple version ("e-commerce growth equals box growth") overstates it: right-sizing, paper and flexible mailers, and lighter basis weights all cut fiber per order.[5] This is the one structurally growing pocket — though cyclically soft, with 2025 box shipments near their lowest since about 2015.[3][5]
• Food service is an underrated cross-child driver. Food away from home reached a record 58.9% of U.S. food expenditures in 2024, pulling demand toward grease-resistant coated papers, bags, cartons, and molded-fiber tableware.[27]
• Hygiene and tissue are the defensive floor. Population-linked and recession-resistant, tissue has grown from 7.2% to 11.3% of total U.S. paper and paperboard capacity since 2000, with production near 7.8 million tons in 2025; fluff pulp (diaper and pad cores) and tissue base are the chain's defensive grades.[7][8] Falling U.S. births pressure diapers, but an aging population lifts adult-incontinence demand.[21][23]
• Graphic grades and stationery are in structural decline — and 2025 made it steeper. U.S. printing-and-writing capacity fell 13.9% in 2025 to 7.7 million tons, down from nearly 18 million tons in 2015, and the country is down to essentially one operating newsprint mill (North American newsprint output roughly 1.66 million tons).[7] On the converting side, U.S. First-Class Mail fell roughly 50% between 2008 and 2023 [28] and a further 5.0% in fiscal 2025 alone, from 44.3 billion to 42.0 billion pieces.[29]
• Industrial production moves corrugated volumes and, directly, the tubes, cores, and drums used wherever paper, film, foil, or textiles are wound onto a roll.
• Recycling is both a demand source and an input market that links the children. The U.S. paper recovery rate ran 60–64% in 2024, roughly 46 million tons — the converting layer's used boxes are the mill layer's cheapest furnish.[7]
• Two macro swing factors cut across the whole subsector: the U.S. dollar (a strong dollar invites imports and pressures exporters) and China, the world's marginal pulp buyer, which effectively sets the global pulp price at the margin. Inventory cycles amplify the swings — the 2022–2024 destocking depressed volumes across the packaging grades, and its fading is the near-term recovery story.[4][5][8]

7. Regulation

Regulation is asymmetric across the two children — heavy on the mill side, light on the converting side — with a few shared threads.

• Mills are among the most environmentally regulated U.S. manufacturers. The central instrument is the U.S. Environmental Protection Agency (EPA) "Cluster Rule" (1997–98), which combined air and water standards for the sector: water-side Effluent Guidelines at 40 CFR Part 430 under the Clean Water Act (permitted through the NPDES discharge program) and air-side MACT/NESHAP standards — Maximum Achievable Control Technology / National Emission Standards for Hazardous Air Pollutants — under the Clean Air Act, which also carry Title V permits and controls on the "rotten-egg" kraft odor.[30][31] The cost is concrete and recurring even for well-run assets: Packaging Corporation of America spent $64 million on environmental compliance plus $27 million of environmental capital expenditure in 2025.[15] Boiler rules, greenhouse-gas reporting, and long permitting add cost and are a real barrier to new mill capacity.
• Converting is regulated more as a product. The pressure points are PFAS bans (per- and polyfluoroalkyl substances, "forever chemicals," long used for grease resistance — the U.S. Food and Drug Administration, FDA, confirmed grease-proofing PFAS are no longer sold into U.S. food packaging as of February 2024, and in January 2025 determined that 35 related food-contact notifications are no longer effective) [32], FDA food-contact rules for cartons, plates, and trays, and, uniquely for stationery, U.S. Postal Service (USPS) and Postal Regulatory Commission rate and delivery decisions that swing envelope demand.[28]
• Shared threads. Comprehensive extended-producer-responsibility (EPR) and recycled-content laws now cover seven states (California, Colorado, Maine, Maryland, Minnesota, Oregon, Washington), charging brands fees that are "eco-modulated" by material and recyclability — and because paper recycles well, fiber fares favorably: Oregon's 2026 fee schedule sets non-consumer corrugated cardboard as low as $0 per pound. Net, EPR is more a demand tailwind for fiber than a cost threat, though it adds real reporting burden.[33][34] Two non-environmental levers round it out: trade policy — no longer abstract, with antidumping orders on paper shopping bags from eight countries plus countervailing duties on China and India [35] — and labor, since many mills are unionized, largely under the United Steelworkers (USW), which bargains multi-mill "pattern" agreements.[7]

8. Consolidation

The subsector is a barbell: a few large, vertically integrated corporations at the top and a long tail of independent, often family-owned converters below. As Section 3 showed, the low measured concentration (HHI 348) understates reality inside each grade, because different firms lead each one and the integrated majors hold only a slice of any single market.[1] Consolidation is the defining competitive story, driven by one logic — scale plus integration lowers unit cost, and disciplined capacity management defends price — and it has accelerated into a wave of mega-deals across both children:

• Mills / paperboard: the 2024 creation of Smurfit WestRock forged a global containerboard champion [5]; International Paper absorbed DS Smith (January 2025) and now plans a late-2026 or early-2027 split into North America and EMEA (Europe/Middle East/Africa) companies [10]; Packaging Corporation of America bought Greif's containerboard business for $1.8 billion — about 800,000 tons at 8.5× trailing EBITDA — in 2025 [11]; International Paper completed its exit from pulp, selling global cellulose fibers to American Industrial Partners for $1.5 billion in January 2026 [12]; Suzano pushed into the U.S. (2024), and Domtar has converted paper machines to containerboard.[7][8]
• Converting / bags, coated, tissue: Novolex bought Pactiv Evergreen (~$6.7 billion including net debt, April 2025), taking a listed company private [17]; Amcor completed its combination with Berry Global in April 2025 (~$10.4 billion of consideration, ~$23 billion of combined sales) [18]; Sofidel bought Clearwater's private-label tissue business (~$1.06 billion, November 2024 — four U.S. plants and 340,000 metric tons of capacity) [19]; Kimberly-Clark agreed to buy Kenvue (~$48.7 billion, November 2025), pivoting toward consumer health and away from mature paper.[20]

Two through-lines matter for investors. First, the dominant corporate story is portfolio surgery toward packaging — the public majors shed declining graphic paper and pulp to concentrate on board, and the assets they divest are increasingly bought by private, family, and foreign capital (Koch/Georgia-Pacific, Paper Excellence/Domtar, Pratt, Green Bay, Hood Container, Apollo/Novolex, American Industrial Partners).[8][12][17][25] The revised child primers sharpen this into a directional claim: over the past three years the interesting assets have moved off the U.S. exchanges, not onto them. Second, in converting the independents compete on service, speed, short runs, and proximity but get squeezed whenever fiber prices rise — steadily feeding roll-up acquisition activity, with family succession keeping the long tail a rich vein of private-equity targets. Because profitability hinges on the operating rate, producers rationalize by permanently closing or idling machines rather than price-warring, and low-cost Brazilian eucalyptus keeps forcing capacity cuts at higher-cost northern mills.[8]

9. Risks

The subsector's risks are the shared risks of a commodity value chain:

• Commodity cyclicality and operating leverage. A demand dip that lowers the operating rate hits margins hard on both the mill and converting sides; realized board prices have now fallen three years running [14], and oversupply (new Brazilian and Chinese pulp capacity) is the dominant pulp risk.[8]
• Secular demand decline in graphic grades and stationery. Printing/writing, newsprint, and envelopes have no visible floor, and the 2025 data made the slope steeper, not gentler — a structural, not cyclical, headwind on both children.[7][29]
• Input-cost volatility. Fiber (pulpwood, recovered old corrugated containers — "OCC"), energy, chemicals, and freight swing margins, especially at non-integrated converters that buy all their board on the open market and wait roughly a quarter for contracts to reset.[7][16]
• Capital intensity and stranded assets. Nine- and ten-figure mills are hard to repurpose; a mill on the wrong grade can become a write-off.[7]
• Environmental and decarbonization capex, plus liability — the flip side of the mill-side regulation in Section 7, and a recurring eight-figure annual line item even at well-run producers.[15][30]
• Trade, tariffs, and FX. Import competition, tariff whipsaw, and dollar strength are acute for export-heavy pulp and for board facing Asian imports; antidumping and countervailing duty regimes now govern paper shopping bags [35], and input tariffs bite even where manufacturing is domestic — Kimberly-Clark reported roughly $100 million of incremental tariff-related costs in 2025.[21]
• Customer concentration. It shows up on both sides: PKG's largest paper customer accounts for 58% of its paper-segment sales [7], and Walmart alone was about 16% of Kimberly-Clark's 2025 sales.[21]
• Thin and shrinking public float outside packaging, and China concentration. The best pulp and paper assets are private or foreign — and there are fewer listed options each year — so U.S. investors often end up owning a packaging company with a paper tail; and marginal pulp demand leans heavily on China.[7][8][12][17]

10. How to invest & outlook

Public routes — lean toward packaging for liquidity. The cleanest, most liquid way into 322 is the packaging bench that spans both children: Packaging Corporation of America (PKG) as the large-cap containerboard play, International Paper (IP) and Smurfit WestRock (SW) for global scale, Graphic Packaging (GPK) for consumer cartonboard, and Sonoco (SON), Greif (GEF), small-cap Clearwater Paper (CLW), and Canadian-listed Cascades (CAS) for recycled board, tubes, cores, and bleached board — valued like industrial/materials cyclicals on earnings and EBITDA multiples.[5][6][13][14] The tissue end runs through staples giants Procter & Gamble (PG) and Kimberly-Clark (KMB) (dividend payers where paper is one segment, and KMB's profile shifts with the pending Kenvue deal).[20][21][22] Graphic paper is a near-vacuum with Sylvamo (SLVM) the only real proxy [7], and pulp runs through foreign-listed Mercer (MERC), Suzano (SUZ), Sappi (SPPJY), and specialty maker RYAM, with timber REITs (WY, RYN) as a fiber proxy.[8] There is no dedicated ETF; mature names pay meaningful dividends, so total return blends cyclical earnings with income. Watch IP's late-2026/early-2027 split and the integration of the 2024–2025 mega-mergers.[10]

Private routes — where the biggest and fastest-growing assets actually live. Across both children the deepest capacity and the purest growth exposures (specialty coated papers, molded fiber, private-label tissue, fluff pulp, envelopes) sit off the U.S. exchanges — Georgia-Pacific (Koch), Domtar (Paper Excellence) [8], Pratt, Green Bay Packaging, Hood Container [25], Novolex/Pactiv (Apollo) [17], Cenveo in envelopes [24], and control positions like American Industrial Partners' fluff-pulp business [12]. The active field is buy-and-build consolidation of independent converters (family-owned box plants, regional bag and coated-paper shops, tube/core/drum operators, envelope makers facing succession, typically transacted at mid-to-high-single-digit EBITDA multiples), plus the adjacent integration play the public leaders themselves run — owning the upstream mills that feed the converting plants. Diligence turns on customer concentration, freight radius, index pass-through terms, line utilization, machine age, food-contact qualifications, and local EPR treatment. Individual investors reach these mainly through timberland/fiber supply, mill real estate, or forest-products private-equity and private-credit vehicles.

Outlook (forward-looking judgment). Treat 322 as one mature, defensive, ~$220-billion manufacturing base running the whole paper chain at two speeds — with a third and fourth speed inside each child. The growth engine is packaging and fiber substitution — e-commerce and plastic-to-fiber "paperization" — though cyclically soft, with 2025 box shipments near a decade low, containerboard running around 91.9% for the year, and producers using supply discipline (the historic ~10% capacity pullback of 2025) to defend price into 2026 against roughly 1–1.5% volume growth.[3][5][6] Graphic paper and stationery stay in structural decline and the slope steepened in 2025 (printing-writing capacity −13.9%; First-Class Mail −5.0%), harvested for cash through closures and paper-to-packaging conversions.[7][29] Pulp looks soft on oversupply near term, with premium fluff and dissolving grades more defensive and low-cost Brazilian eucalyptus capping the complex.[8] Across the whole subsector, winners are decided less by end-market growth than by vertical integration, cost discipline, disciplined capacity, and specialty mix. The tension for a public-market investor is that the growth and the purest exposures are real, but outside packaging the clean U.S. listings largely aren't there — and there are fewer of them than three years ago — so capturing this level means owning the diversified packaging large caps for a slice, going overseas, or going private. The swing factors to watch into 2026 are the same everywhere: the operating rate, the pulp-price cycle, and trade policy. For full company-by-company detail, read the two child primers (3221 Mills and 3222 Converting).

---

Sources

Federal figures are from the U.S. Census Bureau (2022 Economic Census; 2023 County Business Patterns), ingested for NAICS 322 in stats-322.md, and are the ground-truth values preferred throughout. Company, deal, and market sources are drawn from the two child primers (3221, 3222); numbering is consolidated for this rollup.

1. U.S. Census Bureau, 2022 Economic Census — Concentration Ratios and Selected Statistics, NAICS 322, its children, and their sub-industries. NAICS 322: receipts ~$220.33B; firms 2,301; CR4 32.5%, CR8 44.5%, CR20 57.2%, CR50 68.9%; HHI 348.3. Children: 3221 ~$82.5B, 156 firms, CR4 44.6%, HHI 665.2; 3222 $137.80B, 2,197 firms, CR4 25.8%, HHI 230.4. Sub-industries: pulp ~$8.7B/CR4 78.2%/HHI ~2,005, paper ~$32.6B/HHI 617, paperboard mills ~$41.2B/HHI ~1,461; paperboard containers $85.06B/HHI 535.7 (corrugated boxes $57.2B/CR4 52.1%), bags & coated ~$26.8B/HHI 221, other converted $19.7B (sanitary paper $14.1B/CR4 47.8%), stationery $6.28B/HHI 511.7. https://www.census.gov/programs-surveys/economic-census.html
2. U.S. Census Bureau, County Business Patterns 2023, NAICS 322 and children. Establishments 3,813 (402 mills + 3,411 converting plants); employment 351,485 (90,792 + 260,693); annual payroll ~$26.48B ($8.56B + $17.93B); Q1 payroll ~$6.92B. https://www.census.gov/programs-surveys/cbp.html
3. Packaging Dive / IndexBox, reporting the AF&PA 66th Annual Capacity & Fiber Consumption Survey — U.S. paper and paperboard production declined 3.7% in 2025 (66.3M tons); containerboard operating rate and box shipments, 2026. https://www.packagingdive.com/news/afpa-capacity-data-2025-production-decline-containerboard/821910/
4. Statista, Pulp for paper — production by country 2024 (U.S. ~36M metric tons, largest producer), 2025. https://www.statista.com/statistics/1333386/pulp-for-paper-production-by-country/
5. Packaging Dive, Containerboard pricing, integration rate, capacity and the 2026 outlook after the historic ~10% (~3.9 million ton) capacity pullback; box shipments near a decade low; ~1–1.5% volume growth into 2026; Smurfit WestRock merger, 2025–2026. https://www.packagingdive.com/news/containerboard-outlook-2026-capacity-cuts-production-consolidation/809648/
6. Fastmarkets, North American containerboard market — operating rates (~91.9% in 2025), pricing, capacity cuts, 2025–2026. https://www.fastmarkets.com/insights/north-american-containerboard-market-capacity-cuts/
7. Paper-mill sources via the 3221 primer: AF&PA 2025–2026 capacity survey (printing-writing 7.7M tons, −13.9%; 82.8% operating rate; tissue 7.8M tons and 7.2%→11.3% of capacity since 2000; recovery rate 60–64%); uncoated freesheet ~80% four-firm; newsprint ~1.66M tons and one operating U.S. mill; mill cost structure (fiber 25–70%, chemicals 8–25%, fixed-cost leverage), capital intensity (~$130,000 per employee per year; a modern mill >$800M); Sylvamo, PKG paper segment (58% largest-customer concentration), Domtar/Paper Excellence, Pixelle; USW pattern bargaining. 2024–2026. https://www.census.gov/naics/?input=322120&year=2022
8. Pulp-industry sources via the 3221 primer: Mercer, Suzano (Pine Bluff), Sappi Cloquet and RYAM capacity; Georgia-Pacific (Koch) and Paper Excellence/Domtar ownership; timber REITs as fiber proxy; Fastmarkets global pulp outlook; China as marginal pulp buyer; Brazilian eucalyptus cost curve. 2024–2026. https://www.fastmarkets.com/insights/market-signs-recovery-global-pulp-outlook-2025/
9. Fibre Box Association, 2024 Industry Annual Report (U.S. corrugated shipments 381 billion square feet worth $40.8B; 31.2 million tons of containerboard consumed; end-use mix; ~90% of U.S. goods ship in corrugated). https://members.fibrebox.org/upload/2024/Store/FBA%20Annual%20Report%20-%20Non%20Members.pdf
10. Packaging Dive / PaperAge, International Paper completes DS Smith acquisition (January 2025); planned late-2026/early-2027 split into North America and EMEA companies; ~75% of North American production converted internally; 159 U.S. converting plants, 2025–2026. https://www.packagingdive.com/news/international-paper-ds-smith-split-two-companies-spinoff/810809/
11. Packaging Corporation of America, Greif Containerboard Business Acquisition Presentation ($1.8B; ~800,000 tons; 8.5× trailing EBITDA). SEC filing, 2025. https://www.sec.gov/Archives/edgar/data/75677/000119312525153436/d864746dex992.htm
12. American Industrial Partners, AIP Completes Acquisition of International Paper's Global Cellulose Fibers Business ($1.5B; seven pulp mills and two converting facilities), January 2026. https://www.prnewswire.com/news-releases/american-industrial-partners-completes-acquisition-of-international-papers-global-cellulose-fibers-business-302669253.html
13. Graphic Packaging Holding Company, Form 10-K FY2025 — net sales $8.8B (2024); Americas Paperboard Packaging operating margin ~17.6% (2024) and ~13.9% (2025); North America's #1 folding-carton maker. https://www.sec.gov/Archives/edgar/data/1408075/000140807526000009/gpk-20251231.htm
14. Clearwater Paper Corporation, 2025 Form 10-K (1.236 million short tons shipped; average paperboard price $1,167/ton in 2025 vs $1,210 in 2024 and $1,375 in 2023). SEC filing, 2026. https://www.sec.gov/Archives/edgar/data/1441236/000144123626000007/clw-20251231.htm
15. Packaging Corporation of America, 2025 Form 10-K ($64 million of environmental compliance spending; $27 million of environmental capital expenditure). SEC filing, 2026. https://www.sec.gov/Archives/edgar/data/75677/000119312526074129/pkg-20251231.htm
16. Pactiv Evergreen Inc., Form 10-K for fiscal year ended December 31, 2024 (~three-month average raw-material pass-through lag). 2025. https://www.sec.gov/Archives/edgar/data/1527508/000095017025026104/ptve-20241231.htm
17. Packaging Dive, Novolex completes $6.7B acquisition of Pactiv Evergreen (including net debt; closed April 2025; listed company taken private). https://www.packagingdive.com/news/novolex-closes-acquisition-pactiv-evergreen/744049/
18. Amcor plc, Amcor completes combination with Berry Global (~$10.4B consideration; ~$23B combined sales; closed April 30, 2025). 2025. https://www.amcor.com/media/news/amcor-completes-combination-with-berry-global
19. Packaging Dive, Clearwater closes ~$1B sale of private-label tissue business to Sofidel (four U.S. plants, ~1,700 employees, 340,000 metric tons; ~6× trailing adjusted EBITDA). 2024. https://www.packagingdive.com/news/clearwater-sell-tissue-business-sofidel-paperboard/721956/
20. CNBC, Kimberly-Clark agrees to buy Tylenol owner Kenvue in $48.7 billion deal. 2025. https://www.cnbc.com/2025/11/03/kimberly-clark-to-buy-kenvue.html
21. U.S. Securities and Exchange Commission, Kimberly-Clark Corp — Form 10-K FY2025 (North America segment $10.8B at ~24% operating margin; Walmart ~16% of 2025 sales; ~$100M incremental tariff-related costs in 2025). 2025. https://www.sec.gov/Archives/edgar/data/55785/000162828026007567/kmb-20251231.htm
22. Procter & Gamble, Fourth Quarter and Fiscal Year 2025 Results and Form 10-K (net sales $84.3B; Baby, Feminine and Family Care $20.2B; Charmin, Bounty, Pampers). https://www.pginvestor.com/
23. Tissue Online North America, Competition intensifies in the U.S. tissue paper market (mid-size producers' share ~27% in 2007 to ~33%; Cascades Tissue Papers; KP Tissue owns ~12% of Kruger Products; away-from-home channel). 2025. https://tissueonlinenorthamerica.com/competition-intensifies-in-u-s-tissue-paper-market/
24. Cenveo, Inc., About Us (largest U.S. envelope manufacturer; roughly one in three U.S. envelopes; 14 domestic envelope locations; owned by an Atlas Holdings affiliate). 2025. https://www.cenveo.com/about-us1
25. Private-capacity company profiles via the 3221 primer — Pratt Industries (largest 100%-recycled containerboard maker in the U.S.; six recycled paper mills), with Green Bay Packaging and Hood Container as the other large private board holders. https://www.prattindustries.com/about-pratt/
26. U.S. Census Bureau, Quarterly E-Commerce Report, Q1 2026 (16.9% of U.S. retail sales, +9.8% year over year). 2026. https://www.census.gov/retail/eCommerce.html
27. USDA Economic Research Service, Food Service Industry — Market Segments (food away from home 58.9% of U.S. food expenditures, 2024). 2025. https://ers.usda.gov/topics/food-markets-prices/food-service-industry/market-segments
28. U.S. Postal Service Office of Inspector General, Analysis of Historical Mail Volume Trends (First-Class Mail down ~50% 2008–2023; total volume projected down ~33% over the next decade), 2024–2025. https://www.uspsoig.gov/reports/white-papers/analysis-historical-mail-volume-trends
29. U.S. Postal Service, USPS Reports Fiscal Year 2025 Results (First-Class Mail 44.3 billion → 42.0 billion pieces, −5.0%; migration to electronic alternatives). November 2025. https://about.usps.com/newsroom/national-releases/2025/1114-usps-reports-fiscal-year-2025-results.htm
30. U.S. EPA, Pulp and Paper Production NESHAP (MACT I–III) — National Emission Standards for Hazardous Air Pollutants, 2024. https://www.epa.gov/stationary-sources-air-pollution/pulp-and-paper-production-mact-i-iii-national-emissions-standards
31. U.S. EPA, Pulp, Paper and Paperboard Effluent Guidelines (Clean Water Act / NPDES / 40 CFR Part 430) — the 1997–98 Cluster Rule, 2024. https://www.epa.gov/eg/pulp-paper-and-paperboard-effluent-guidelines
32. U.S. Food and Drug Administration, Authorized Uses of PFAS in Food Contact Applications (February 2024 determination that grease-proofing PFAS are no longer sold into the U.S. market; 35 food-contact notifications made ineffective, January 2025). 2024–2025. https://www.fda.gov/food/process-contaminants-food/authorized-uses-pfas-food-contact-applications
33. Packaging Dive, Packaging laws taking effect in 2026 — bags, foam, PFAS, EPR. 2025. https://www.packagingdive.com/news/state-packaging-laws-2026-bags-foam-pfas-hotels/808682/
34. EcoEnclose / Proskauer Rose, How new EPR requirements, PFAS bans, and light-weighting will shape packaging in 2026 (seven-state EPR laws — CA, CO, ME, MD, MN, OR, WA; Oregon's 2026 fee schedule sets non-consumer corrugated as low as $0/lb). 2025–2026. https://www.ecoenclose.com/blog/how-new-epr-packaging-requirements-laws-and-recycling-regulations-will-shape-sustainable-packaging-in-2026
35. U.S. International Trade Commission, Paper Shopping Bags — Final Determination (antidumping orders on eight countries; countervailing-duty orders on China and India). 2024. https://www.usitc.gov/publications/701_731/pub5522.pdf