Gordon Haskett’s Don Bilson, who heads the firm’s event-driven research, noted earlier that Nomura Securities’ latest 13-D filing showed that it owned almost 7M Dropbox (DBX) shares at the end of March. “The reason this is interesting is Nomura is where activists often go for swaps,” said Bilson, who added that it looks to him “like somebody has picked themselves up a decent amount of DBX exposure through a swap.” Credit Suisse “is a desk that has also been known to put ‘activists’ into swaps,” according to Bilson, who pointed out that McKesson (MCK) is on the list of the firm’s positions that saw the greatest change in market value from December through the end of March. Not only is McKesson on the list “but its sitting in the pole position,” added Bilson, who also said that “if one of the usual suspects is at MCK, it seems more likely that they are there as an opportunist or a suggestivist.”