Here's the issue from my perspective.....

Okay...so a big buyer (or buyers), for the sake of argument we'll say its one hedge fund with billions under management, and they're looking to establish a 500,000 share position. Nothing massive, not in the hedgie word certainly.

So they start buying everything that's available, and quickly drive the PPS up to $2.50 accumulating we'll say 100,000 shares....basically about 5 days worth of average trading volume. So they've accumulated 1/5th of the position they want, just 20%.

Now the problem.....RVX has just climbed from $1.70 to $2.50 in a short period of time, close to 50%. Now its popping up on radar screens, momentum and swing traders jump on board.....that hedge fund sees big potential profits disappearing as the great unwashed start competing with them for shares and long term investors start gripping their shares tight and even adding.

So what to do? Hedge funds are in business to make $$$. So maybe instead of going long, sell that 100,000 for a small profit (small for a hedgie) and go short and push those stupid retailers around a bit and make some $$$.