Fats and Oils Refining and Blending (U.S.) — An Investor's Primer

NAICS 2022 code 311225. NAICS = North American Industry Classification System, the standard U.S. government scheme for grouping businesses.

1. Overview

This is the industry that turns crude vegetable and animal oils into the finished fats you actually use: bottled cooking and salad oil, the frying oil in a restaurant kitchen, margarine and shortening, and the "refined, bleached, deodorized" (RBD) oils that go into packaged food. Companies here buy oil that has already been squeezed out of soybeans, canola, sunflower or other seeds and then clean it, harden or blend it, and package it. In the last few years the same refined oil has also become a major fuel feedstock — soybean oil is now the single biggest input to U.S. renewable diesel.

Why an investor cares: it is a large, unglamorous, high-volume commodity-processing business sitting at a busy crossroads — between agriculture, packaged food, restaurants, and energy policy. Margins are thin per pound but volumes are enormous, and the whole industry has been repriced upward and made far more volatile by the biofuel boom.

Public-market ways in are indirect: there is no pure-play, U.S.-listed fats-and-oils refiner. You get exposure through diversified agribusiness giants (ADM, Bunge), through biofuel-adjacent names (Darling Ingredients, Valero), or through the underlying soybean-oil commodity itself. Private-market ownership is where much of this industry actually sits — Cargill, farmer cooperatives, and private-equity-backed specialty refiners.

2. What it is and how it's structured

Federal statisticians define NAICS 311225 as establishments primarily engaged in one or more of: making shortening and margarine from purchased fats and oils; refining and/or blending vegetable, oilseed and tree-nut oils from purchased oils; and blending purchased animal fats with purchased vegetable fats [1]. The key word is purchased. This is the downstream step. These plants do not crush the seed; they buy crude oil and refine or blend it.

The operating model begins with crude, degummed, or partially refined oil delivered by rail, truck, vessel, or pipeline into tank farms. A conventional refinery removes phospholipids through degumming, neutralizes or distills free fatty acids, uses bleaching earth to remove color bodies, metals, soaps, and oxidation products, and steam-strips volatile flavors and odors under heat and vacuum. Depending on the product, the refinery may also winterize, fractionate, fully hydrogenate, interesterify, blend, add antioxidants, or package the oil [2][3].

What it excludes (important, because the boundaries are where the money hides):

• Crushing / extracting oil from the seed is NAICS 311224 (Soybean and Other Oilseed Processing) [1].
• Corn oil from wet corn milling is NAICS 311221 [1].
• Rendering or refining animal fats (tallow, lard) at slaughter operations is NAICS 311611 / 31161 (Animal Slaughtering and Processing) [1].

That matters because the industry's biggest players — ADM, Bunge, Cargill — run integrated complexes that crush the bean and refine the oil under one roof. Federal data classify each plant by its primary activity, so a lot of real oil-refining capacity is counted under crushing (311224), not under 311225. The 311225 code best captures merchant and specialty refiners and blenders — companies that buy crude oil and sell finished fats — plus the standalone refining that isn't bolted onto a crush plant.

Ownership mix: a handful of large, mostly integrated processors (some public, the biggest private), a set of specialty and foodservice fats companies (often joint ventures or private-equity owned), and a long tail of small blenders.

3. How big it is

Our federal figures for NAICS 311225:

Two things stand out. First, this is a capital-intensive, not labor-intensive industry: about $17.8 billion of output [4] runs through only ~110 plants and ~10,000 workers [6] — roughly $1.8 billion of shipments per thousand employees. Second, the reported $17.8 billion understates the true footprint of oil refining in America. Because integrated crush-and-refine complexes are classified under oilseed crushing (311224), and because animal-fat refining sits under rendering (311611), a large share of national fats-and-oils refining is captured under other codes. As a scale check: Bunge's global Refined and Specialty Oils segment alone reported $12.8 billion of net sales in 2024 [8] — a single company's worldwide oils division approaching the entire U.S. 311225 total, precisely because most of that activity is fed by, and reported alongside, its own crushing. So treat 311225 as the merchant-refiner slice, not the whole oil-refining economy.

Unlike some industries, this one is not undercounted because it's dominated by government or by tiny sole proprietors — it is genuinely a mid-sized, concentrated manufacturing industry. The undercount is purely a classification artifact of where refining gets counted inside vertically integrated firms.

4. The investable universe

There is no pure-play, U.S.-listed fats-and-oils refiner. The public routes are all partial or adjacent.

Public companies (diversified; fats/oils is a segment):

Public, biofuel/feedstock-adjacent (not 311225, but tied to the same oil):

Major private and cooperative owners (much of the industry):

• Cargill — the largest privately held U.S. company; a top-three integrated crusher/refiner.
• CHS Inc. and Ag Processing Inc. (AGP) — farmer-owned cooperatives with large crush/refine footprints (you generally must be a member/producer to own economic interest).
• Louis Dreyfus Company — the "D" of the ABCD trading houses; private.
• Stratas Foods — a 50/50 joint venture (ADM and ACH Food) that is one of the largest U.S. refiners/blenders of foodservice and private-label oils, shortenings, and dressings, with manufacturing in six U.S. states [10].
• Ventura Foods — a private venture between CHS and Mitsui; particularly important in foodservice and value-added formulations, consuming 2 billion pounds of edible oils annually, with soybean oil representing 65–75% of its oil use [11].
• AAK (Swedish-listed, large U.S. operations) — specialty fats, margarines, frying oils [12].

Direct commodity route: CBOT (Chicago Board of Trade) soybean-oil futures (ticker ZL/BO) give the cleanest exposure to the underlying price, and broad agribusiness ETFs (e.g. MOO, VEGI) hold the majors. ADM also holds a 22.5% interest in Wilmar (Singapore-listed), providing indirect exposure to Asian and global oils markets [9]. Tickers, share prices and multiples are relevant only in these investable sections — the industry itself is an ingredient business, not a "stock sector."

5. How the money works

Owners here run a conversion-margin business. Simplified:

Gross margin ≈ (price of finished refined/blended fat) − (cost of crude oil input) − (processing cost: energy, hydrogen, chemicals, labor).

Crude vegetable oil is bought, then run through refining, bleaching and deodorizing (RBD), and often hydrogenation, interesterification, fractionation or blending to hit a customer's exact melting point, shelf-life and label. The refiner captures the spread between the finished product and the raw oil, minus the cost to process. Per pound that spread is small; the business is won on throughput, plant utilization, and yield, and on selling higher-value specialty and branded fats rather than plain commodity oil.

For the integrated majors, the governing economic gauge is the crush margin (often quoted as the "board crush"): the value of the soybean meal + oil you can sell minus the cost of the beans. Two features define today's economics:

• The biofuel boom repriced the oil. As renewable-diesel demand surged, soybean oil's share of the total value in a crushed bean jumped from roughly 25–35% to 35–50%, and both oil values and crush margins became much more volatile [13].
• Margins have normalized off record highs. Crush margins that briefly ran $2.00–$3.00 per bushel have fallen back toward roughly $1.10–$1.50 [13]. Crude soybean oil in central Illinois averaged about 48 cents per pound early in 2024 and roughly 43 cents by that September — a ~12% swing inside one year [13].

As a margin reference (though explicitly not industrywide), ADM's global Refined Products and Other subsegment reported $10.9 billion of revenue and $529 million of segment operating profit in 2025, versus $10.6 billion and $552 million in 2024 — implying operating-profit-to-revenue ratios of approximately 4.9% and 5.2%, respectively [9]. This subsegment includes biodiesel and other products with global operations, so these are not NAICS 311225 margins, and ADM also reported material mark-to-market timing effects.

The practical implication: refiners live and die on hedging (locking crude-oil input and finished-product prices on futures), on contract structure (fixed-price food contracts vs. spot biofuel-feedstock sales), and on which end-market they lean into — stable, higher-margin food oils vs. fast-growing, policy-driven, lower-margin fuel feedstock. A processor selling into renewable diesel effectively takes on energy-policy risk in exchange for volume.

6. What drives demand

Three demand pillars, moving at very different speeds:

1. Food (large, flat). Cooking and salad oils, frying oil for restaurants and foodservice, margarine and shortening for baking and packaged food, plus dressings and mayonnaise. This base is stable-to-slowly-declining: U.S. margarine and shortening consumption edged down from about 4.4 million tonnes in 2021 to 4.3 million in 2024 [14], as diners drift toward butter and "clean-label" formulations.

2. Biofuel (the swing factor). Biomass-based diesel — renewable diesel plus biodiesel — has transformed oil demand. USDA reports that fats and oils used in U.S. biomass-based diesel reached 37.2 billion pounds in marketing year 2023/24, then fell by nearly 3 billion pounds to 34 billion pounds in 2024/25 amid uncertainty over renewable-volume obligations and small-refinery exemptions [15]. In 2024/25, vegetable oils represented 55% of disclosed feedstock, soybean oil 34%, and soybean-oil use totaled 11.8 billion pounds [15]. EIA counted 19 U.S. renewable-diesel and other biofuel plants with 4.7 billion gallons per year of capacity as of January 1, 2025 [16]. This is the source of both the industry's growth and its new volatility.

3. Industrial (smaller). Soaps, lubricants, oleochemicals and other non-food uses.

The food pillar tracks population, restaurant traffic and packaged-food output — slow and steady. The biofuel pillar tracks federal policy and diesel economics and can move violently: between 2022 and 2024 renewable-diesel consumption nearly doubled, then U.S. production fell about 10% in 2025 as tax-credit and feedstock uncertainty caused plants to idle [13][16].

7. Regulation

Three regulatory regimes matter more than anything a refiner does operationally:

• FDA food-safety rules (trans fats). The U.S. Food and Drug Administration (FDA) ruled partially hydrogenated oils (PHOs) — the main source of artificial trans fat — no longer "generally recognized as safe," with compliance phased in from 2018 through January 2021 [17]. This permanently reshaped product mix, pushing refiners toward non-hydrogenated, high-oleic and interesterified fats.

• EPA Renewable Fuel Standard (RFS). The Environmental Protection Agency (EPA) sets annual Renewable Volume Obligations (RVOs) — how much biofuel must be blended. EPA's final rule set total applicable biomass-based-diesel requirements at 9.07 billion RIN-equivalent gallons for 2026 and 9.20 billion for 2027, the highest ever set [18]. Higher RVOs pull more refined oil into fuel.

• Federal biofuel tax credits (the 45Z credit). As of January 1, 2025 the Section 45Z Clean Fuel Production Credit replaced the old blenders' credit, paying producers (not blenders) up to $1.00 per gallon for road biofuels and $1.75 for sustainable aviation fuel, scaled by carbon intensity [19]. Legislation enacted July 4, 2025 (H.R. 1) extended 45Z through 2029, loosened the carbon-intensity rules, and tilted the credit toward domestically produced feedstocks [19] — a meaningful tailwind for U.S. soybean oil versus imported used cooking oil and tallow, if it holds. Uncertainty over how Treasury and EPA finalize the details has, at times, frozen feedstock contracting [19].

Also relevant: USDA standards of identity and labeling for margarine/spreads; FSMA preventive-controls requirements, under which covered facilities must maintain a written hazard analysis, preventive controls, supplier-verification procedures, monitoring, corrective actions, and recall plans [20]; and — not regulation but a growing political-reputational force — the "Make America Healthy Again" (MAHA) campaign against "seed oils" (see Risks).

8. Competitive dynamics and consolidation

On the narrow federal numbers, 311225 looks only moderately concentrated: the top four firms hold 54.1% of receipts, the top eight 71%, the top twenty 93.5% [4], and the Herfindahl-Hirschman Index (HHI, the standard concentration gauge) is 891 [4] — below the 1,800 threshold the federal antitrust agencies treat as "highly concentrated." In other words, a real top tier sits above a long tail of ~90 firms [4].

But the effective concentration is higher than 311225 alone shows, because the same few integrated houses — ADM, Bunge, Cargill and Louis Dreyfus (the "ABCD" traders, estimated to control ~90% of the global grain trade) [21] — dominate the upstream crushing that feeds the refiners. Consolidation is still advancing: Bunge completed its combination with Viterra on July 2, 2025 [22], creating a crop-trading and oilseed-processing group built to rival ADM and Cargill, with regulators forcing some plant divestitures (several went to Cargill) [21]. The renewable-diesel wave also drew heavy new investment — a wave of crush-plant expansions and processor–refiner–fuel joint ventures — raising a real overbuild worry, with new crush capacity arriving just as biofuel demand wobbles.

9. Risks

• Commodity price volatility. Soybean and canola oil prices swing double digits within a year [13]; a refiner mispositioned on its hedges can see margins evaporate.
• Biofuel-policy whiplash. The industry's growth engine is now hostage to the RFS, the 45Z credit and RIN prices. The 2025 idling of renewable-diesel capacity on tax-credit uncertainty is the cautionary tale [13][16][19].
• The "seed oil" backlash. HHS Secretary Robert F. Kennedy Jr. has called seed oils among "the most unhealthy ingredients" in food and promoted beef tallow instead; restaurants have publicized switches back to tallow, and "seed-oil-free" product sales jumped over 200% in a year [23]. Most nutrition scientists dispute the health claims [23], but the demand and reputational risk to food-oil volumes is real regardless of the science.
• Feedstock substitution. USDA found that animal fats, waste oils, and greases supplied 37% of biomass-based-diesel feedstocks in 2023, up from 17% in 2020 [24] — squeezing the very demand that lifted the industry.
• Overbuild and the meal glut. Crushing hard "for the oil" produces a surplus of soybean meal that domestic livestock demand can't fully absorb, pressuring meal prices and, in turn, the integrated crush margin [13].
• Structurally thin margins and high capital intensity leave little cushion in a downturn.
• Trade and tariff exposure on both imported feedstocks and exported oils/meal.
• Operational and safety risks. Environmental and operational risks include wastewater with high organic loading, spent bleaching earth, odors and air emissions, tank spills, combustible materials, fires, high-temperature processes, vacuum-system failures, and extended refinery downtime. BLS reported a 2024 total-recordable injury rate of 3.0 cases per 100 full-time-equivalent workers for NAICS 311225 [25].

10. How to invest, and the outlook

Public-market routes are all indirect. Buying ADM (NYSE: ADM) or Bunge (NYSE: BG) [8][9] gives you the whole integrated crush-trade-refine complex, of which fats-and-oils refining is one slice, not a pure bet on it. Darling Ingredients (NYSE: DAR) and Valero (NYSE: VLO), through the Diamond Green Diesel joint venture, are ways to play the demand side — the fuel buyers of refined fats. For direct price exposure, CBOT soybean-oil futures or broad agribusiness ETFs (MOO, VEGI) are the cleaner instruments.

Private-market routes are where the sector's specialists live: farmer cooperatives (CHS, AGP — generally member-owned), private giants (Cargill, Louis Dreyfus), and private-equity-owned specialty/foodservice refiners (Stratas Foods, Ventura Foods, AAK's U.S. operations) [10][11]. Direct project investment has flowed into crush-plus-refine-plus-renewable-diesel complexes.

Near-term drivers to watch (forward-looking judgments, not settled facts):

• Biofuel policy clarity. Final implementation of the 45Z credit and the record 2026–2027 RVOs should, if sustained, keep pulling refined oil into fuel and support prices [18][19]; the domestic-feedstock tilt in the 2025 law would favor U.S. soybean oil over imports [19]. This is the single biggest lever.
• Crush overbuild vs. demand. A wave of new capacity meeting softer-than-hoped biofuel demand could compress margins even if volumes grow.
• The food-side reputational trend. The seed-oil debate is unlikely to dent bulk food-oil volumes quickly, but it is a genuine headwind to premium food-oil demand and a spur to reformulation [23].

The reasonable base case: a larger but far more cyclical industry than the pre-2020 version, whose fortunes now rise and fall as much with Washington's biofuel rules and diesel economics as with the dinner plate.

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Sources

1. U.S. Census Bureau. 2022 NAICS Definition — 311225 Fats and Oils Refining and Blending. 2022. https://www.census.gov/naics/?details=311225&input=311225&year=2022
2. AOCS. Oil Refining. https://www.aocs.org/resource/oil-refining/
3. FAO. Edible Oil Refining. https://www.fao.org/4/v4700e/v4700e0a.htm
4. U.S. Census Bureau / Iowa State University CARD. 2022 Economic Census — Concentration Ratios and Statistics, NAICS 311225. 2022. (Receipts $17.8B; 91 firms; CR4 54.1%, CR8 71%, CR20 93.5%; HHI 891.) https://www.card.iastate.edu/files/publications/pdf/26PB51.pdf
5. U.S. Census Bureau. Annual Integrated Economic Survey 2023, NAICS 311225. 2023. (Sales/value of shipments $18.067B.) https://data.census.gov/table/AIESEXP01TIMESERIES.AIES00EXP01
6. U.S. Census Bureau. County Business Patterns 2023, NAICS 311225. 2023. (109 establishments; 10,175 employees; $556.4M annual payroll.) https://www.census.gov/programs-surveys/cbp.html
7. U.S. Small Business Administration. Table of Small Business Size Standards (NAICS 311225: 1,100 employees). 2023. https://www.sba.gov/document/support-table-size-standards
8. Bunge Global SA. Fourth Quarter and Full-Year 2024 Results (Refined & Specialty Oils net sales $12.8B, adj. segment EBIT $739M; total net sales $53.1B). 2025. https://investors.bunge.com/news-and-events/press-releases/2025/02-05-2025-110033721
9. ADM. 2025 Form 10-K (total revenue ~$85.5B; Refined Products and Other subsegment $10.9B revenue, $529M operating profit 2025; 22.5% interest in Wilmar). https://www.sec.gov/Archives/edgar/data/7084/000000708426000011/adm-20251231.htm
10. Stratas Foods. About Us (ADM/ACH 50/50 joint venture; manufacturing in six U.S. states). 2025. https://www.stratasfoods.com/about
11. CHS Inc. Ventura Foods: Soy Oil Success (CHS/Mitsui venture; 2B lbs edible oils annually; 65–75% soybean oil). 2024. https://www.chsinc.com/news-and-stories/2024/03/12/ventura-foods-soy-oil-success
12. AAK. Investor Information. https://www.aak.com/investors/
13. Wu, Mallory & Serra / farmdoc daily, University of Illinois. The Soybean Industry Response to the Renewable Diesel Boom — Part 3: the Value of Soybean Oil in the Soybean Crush. 2025. https://farmdocdaily.illinois.edu/2025/10/the-soybean-industry-response-to-the-renewable-diesel-boom-part-3-the-value-of-soybean-oil-in-the-soybean-crush.html
14. IndexBox. U.S. Margarine and Shortening Market Report. 2026. https://www.indexbox.io/store/usa-margarine-and-shortening-market-analysis-forecast-size-trends-and-insights/
15. USDA Economic Research Service. Oil Crops Outlook, December 2025 (fats/oils in biomass diesel 37.2B lbs 2023/24, 34B lbs 2024/25; vegetable oils 55%, soybean oil 34%, 11.8B lbs). https://ers.usda.gov/sites/default/files/_laserfiche/outlooks/113558/OCS-25l.pdf
16. U.S. Energy Information Administration. Renewable diesel capacity and production (19 plants, 4.7B gal/yr capacity as of Jan. 1, 2025; 2025 production down ~10%). https://www.eia.gov/biofuels/renewable/capacity/
17. U.S. Food and Drug Administration. Final Determination Regarding Partially Hydrogenated Oils (Removing Trans Fat). 2018 (compliance phased through Jan. 2021). https://www.fda.gov/food/food-additives-petitions/final-determination-regarding-partially-hydrogenated-oils-removing-trans-fat
18. U.S. EPA. Final Renewable Fuel Standards for 2026 and 2027 (biomass-based diesel 9.07B RIN-gal 2026, 9.20B 2027). https://www.epa.gov/renewable-fuel-standard/final-renewable-fuel-standards-2026-and-2027
19. Congressional Research Service / Clean Air Task Force. The Section 45Z Clean Fuel Production Credit and H.R. 1 expands 45Z through 2029. 2025. https://www.congress.gov/crs-product/IF12502 and https://www.catf.us/2025/10/h-r-1-expands-45z-clean-fuel-production-credit-for-conventional-biofuels-while-cutting-sustainable-aviation-fuel-tax-credit/
20. U.S. Food and Drug Administration. FSMA Final Rule for Preventive Controls for Human Food. https://www.fda.gov/food/food-safety-modernization-act-fsma/fsma-final-rule-preventive-controls-human-food
21. World Grain / Farm Policy News. Bunge Completes Merger with Viterra (ABCD control ~90% of global grain trade; Cargill divestitures). 2025. https://www.world-grain.com/articles/21587-bunge-viterra-complete-82-billion-merger
22. Bunge Global SA. Bunge and Viterra Complete Merger (completed July 2, 2025). https://bunge.com/Press-Releases/Bunge-and-Viterra-Complete-Merger-to-Create-Premier-Global-Agribusiness-Solutions-Company
23. STAT News; CNN. MAHA's crusade against seed oils and Is beef tallow healthier than seed oils? (RFK Jr. claims; restaurant switches; "seed-oil-free" sales +216%; scientific rebuttal). 2025. https://www.statnews.com/2025/02/12/are-seed-oils-bad-for-you-examining-science-behind-claims-maha-movement-rfk/
24. USDA Economic Research Service. Animal fats and waste oils in biomass-based diesel (37% of feedstocks 2023, up from 17% in 2020). https://ers.usda.gov/data-products/charts-of-note/109680
25. U.S. Bureau of Labor Statistics. Injuries, Illnesses, and Fatalities — Industry Rates, NAICS 311225 (3.0 cases per 100 FTE workers, 2024). https://www.bls.gov/web/osh/table-1-industry-rates-national.htm