Facebook's swooning stock: Pity Sean Parker, other gajillionaires

As a result of the swoon in Facebook's stock, early investor Sean Parker is likely to lose out on $380 million in cash he had expected; Facebook co-founder Dustin Moskowitz: $285 million.

At issue is what's called the "over allotment" of shares -- known in Wall Street lingo as the greenshoe.

With the bankers under attack and the stock hovering around $31 a share -- roughly 18 percent below the offering price -- it's unlikely the underwriters can exercise the over allotment, unless the stock takes a surprising turn and starts to rally.