I don't think it is plural.....shorts....I think it is basically one market maker.......NITE. And for a bunch of years now they do not report their short interest in RGRX. they can do so (supposedly) under the market maker exemption of reporting (but NITE is really "position tradiung" their large RGRX short).. I've said it often...the SEC thinks there is about 5,000 short in RGRX.I think it's closer to 2 to 3,000,000....and it is ALL at NITE market maker. i'm dying to see what FINRA reports today as shorted. We had 50k, 44k and 7k in uptick buys..I bet it was NITE shorting.on the offer. We'll see in an hour or so.