Maybe the massive U.S. repo market isn’t as massive as we thought. That’s the conclusion of a study by researchers at the Federal Reserve Bank of New York that suggests transactions in the repurchase agreement (repo) market total about $5.48 trillion. The figure, though impressive, is a far cry from a previous and oft-cited $10 trillion estimate made in 2010 by two Yale professors, Gary Gorton and Andrew Metrick. The Fed researchers, acknowledging the “spotty data” that complicates such tasks, argue the previous $10-trillion estimate is based on repo activity in 2008 when the market was far larger, and is inflated by double-counting.