Options traders hit with margin calls as winning bets against banks are in limbo

>Shaun William Davies, a professor of finance at the University of Colorado who teaches a class about derivative securities, found himself caught up in the confusion after buying puts against Signature that expired on March 17.

> Initially, Robinhood told him there was nothing it could do

Whoa whoa whoa, a PhD professor of finance who teaches about derivatives, uses Robinhood?

Also, the unnecessary mention earlier in the piece about the guy’s daughter being born to a surrogate.