You take us for idiots, right? If what has happened to this stock over the past year or so was not short manipulation, and I think by many of the very institutions that own it, then you would expect a decrease in institutional ownership because retail holders just don't hold enough shares for the kind of churn happening in this stock.
I've been trying to add up short positions by institutions via their reports...frankly it just doesn't add up to 13 million; aside from Fidelity I'm coming up mostly zeros. I'm leaning in the direction of massive naked short selling unless I can figure out I'm doing something wrong like assuming mutual funds HAVE to report lent positions on firms as opposed to optionally reporting them. So I'm torn between the lack of transparency by institutions and security lending and naked short selling... On days like today I'm thinking naked short selling. Not in a million years do I think there were enough shares to borrow today to fuel a "normal" short sell attack.