Commitments of Traders (COT) Report

The Commitments of Traders (COT) report is a weekly CFTC publication showing aggregate positions of different groups of traders — commercial hedgers, large speculators, and small speculators — across U.S. futures and options markets.

The COT report is one of the most underutilized signals in investing. The CFTC is the U.S. regulator that publishes these positions weekly, on a schedule, free, from a public source: a positioning extreme is a fact about who holds what, not an opinion.

Further reading: Wikipedia