Sounds to me this guy is just a sore loser...
He didn't even lose 1.3 million, but about 80k on investment...
And a market maker doesn't only do client trades, but mostly they also act like hedgefunds.
Simply, the whole damn company wasn't worth a dime... stock shot up on inflated news and Knight saw an overvalued stock and decided to short it. Whether it's naked or not doesn't matter. Even if you borrow the stock first, you still create extra shares, so that's a nonsense argument. And if the company was really worth $3.50 someone would have bought it...
Again, sore loser who decided to spend years to find out who/why/why me/I'm small and they are big/boohoo...
And it's not that I "take pleasure" of people losing, but this is what happens when dabbling in penny stocks... which this guy should've known, since he's a "savvy ex-WallSt trader".
Putting in 100k of your retirement money in a penny stock... really...? Who the f%$ck does that?