FACT: Dude is trading odd lots. FACT: Dude is down $80K on GME but magically up more on his odd lots? Sure, Bro!
If he wants to save face (not that one obviously, heh), he should show his entire portfolio, and not just a snapshot of a few of the positions surrounding the GME one.
I want to be there when IBKR liquidates the short. You just know the dude has been selling whatever winners he had like Farfetch to allow him to carry this GME short.
I was a finance major and graduated with a 4.0 in 3 years. Few in the world probably understand IRR as good as I do. But I'm asking how to calculate it (or other appropriate return on investment parameters) with mixed positions including ******* GME ******* shorts. But thank you for your snide comment.