For decades, poultry had been volatile in a frustratingly predictable way: When times started getting good, companies flooded the market with chicken, causing prices to crash. ... At first the transformation puzzled industry watchers. Some speculated that a merger spree during the 1980s and 1990s was responsible—with fewer decision-makers in charge and fewer competitors, the remaining companies could more easily survey and predict the landscape. But Sanderson’s conference call suggested another source for the shift: Agri Stats, a private service that gathers data from poultry processors, produces confidential weekly reports, and disseminates them back to companies that pay for subscriptions. ... Many industries, such as health care and retail, make use of information-sharing services, but Agri Stats provides chicken producers with a rare level of detail, in uncommonly timely fashion. ... Agri Stats has for years maintained that its reports don’t violate antitrust laws, in part because the information provided is historical. A typical report doesn’t say how much a company plans to charge for a cut of meat, only what it charged last month or last week. ... In 2013, according to SEC filings, Eli Lilly purchased Agri Stats for an undisclosed sum and folded it into its farm animal drug division. ... Illegal collusion occurs when companies plan with one another to cut production ahead of time with the specific intent of raising prices.