So the hedge fund paid off someone to get the trial results before they were released to the public. That is known as insider trading and is illegal. Also highly unlikely on such small volume. Hedgies would use put options against any long position (hence the term “hedge”). This was a classic shake out – seen it a hundred times. You cannot read anything from it unfortunately, but I have seen similar action that preceded good news. The shake out is engineered by parties who sell a block of shares to trigger stops and shake out weaker hands in a panic, only to buy back more shares at cheaper prices. A classic sign of this action is a quick snap back from the plunge, which is what happened today. I suggest you remove the term expert from you name.