[eru]

> [...] would you want to continue holding Blockbuster stock? No; you would want to sell it.

For every seller, there's a buyer. The market will settle on a price at which those are evenly matched---even if that's close to zero.

You have to offer a good enough price on your Blockbuster stock to find a buyer who thinks it's a good idea. (Unless it's someone who has to cover a short position, those guys are basically forced to buy. But they'll still buy from the seller with the best price.)