
An official explained how China's Ministry of Agriculture compiles its monthly swine inventory and sow statistics, which were first released in 2009 after a 2007 pork price spike. The numbers are derived from monthly reports filed by about 4,000 villages, with the surveyed villages rotated over time.
Analysts scrutinize the data for clues about future hog prices, though its accuracy is debated.
Uncertainty over the reliability of China's monthly hog inventory data makes forecasts of pork supply and hog prices less certain, so traders may react unevenly to each release.
After 61 past neutral report events, Lean Hogs moved a median -0.4% over 5 sessions (48% higher; middle half -1.3% to +1.8%), and +2.1% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.