Lean Hogs

Lean hog futures price US pork at the packing plant: 40,000 pounds per contract quoted in cents per pound of carcass weight, settled in cash against the CME Lean Hog Index, a two-day weighted average of negotiated carcass prices reported to the USDA. The design dates to 1997, when CME converted the old live hogs contract (listed in 1966 alongside the famous pork bellies) to carcass pricing and cash settlement, reflecting an industry that had vertically integrated into large contract-production systems where physical delivery of live animals no longer made sense. Pork bellies, once the icon of Chicago commodity trading, were delisted entirely in 2011. The US industry is concentrated in Iowa and North Carolina, with Smithfield Foods, owned by China's WH Group since 2013, the largest producer.

The global price-setter, however, lives in China, which raises roughly half the world's pigs. The African swine fever epidemic that swept China from 2018 destroyed an enormous share of the national herd, by many estimates roughly 40 percent or more, and sent Chinese pork prices and import demand vertical; US futures whipsawed for two years on Chinese buying headlines layered over the US-China trade war. China's subsequent rebuild into giant multi-story "hog hotels" restored supply, and its import demand normalized, but the episode established Chinese herd health and policy as the market's biggest single variable. Domestically, hogs cycle faster than cattle, under a year from breeding to slaughter, so supply responds quickly and the contract trades seasonal patterns: summer grilling demand against the fourth-quarter slaughter peak. California's Proposition 12 animal-housing rules, in force from 2024 after Supreme Court review, fragmented the US market into compliant and non-compliant pork, and periodic disease scares, the 2014 PEDv virus killed roughly 8 million piglets, keep biosecurity on every trader's screen.