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Napkin Math
Let’s run the numbers.
The arithmetic
Rough estimate
| US cattle slaughtered annually | ~26 million head |
| Big 4 share of US slaughter | 85% |
| Big 4 cattle per year | 26M × 0.85 = 22M head |
| Average cow length, nose to tail | ~7 feet |
| Total line length | 22M × 7 = 154M feet |
| Convert to miles (5,280 ft/mi) | 154M ÷ 5,280 |
| Line length | 29,000 miles |
Why this matters
The scene is a line of cattle. The market is concentration risk.
Four companies — Tyson, Cargill, JBS, and National Beef — slaughter 85% of the US beef supply. Tyson runs about 24%, Cargill 22%, JBS 20%, National Beef 19%. Each operates three or four flagship plants doing 4,000 to 6,000 head per day.
When one of those plants goes down, the market feels it immediately.
In April 2020, three plants closed at once — Tyson Waterloo, JBS Greeley, Smithfield Sioux Falls. Fifteen to thirty percent of US slaughter went offline for weeks. The boxed beef cutout hit record highs while live cattle futures collapsed. It was the largest packer-margin blowout in market history.
Steve Kay, Cattle Buyers Weekly, 2020
In August 2019, the Tyson Holcomb fire took one Kansas plant offline for four months. That single plant was 5% of US slaughter. Futures priced the shutdown within hours. In June 2021, a ransomware attack on JBS briefly halted the company’s North American beef operations entirely.
Every union strike, every OSHA inspection, every plant fire, every cyberattack is a real supply signal when four companies run the whole system. The practical thesis for a Live Cattle trader: single-plant risk is the market’s biggest short-term supply shock, and 85% concentration means it only takes one going dark to move the tape.