call volume for most shorted U.S. stocks. Source: Deutsche Bank In the current market, call volume for these heavily shorted names has quadrupled in just the past few weeks, signaling a scramble by short sellers to cover positions as prices rise. Meanwhile, the broader market is also seeing a burst in call activity. The five-day MA of net call volumes for all other stocks has doubled to around 10 million contracts, its highest level in four years. The data suggested that shorts are being rapidly unwound, co ...