Here's the source --
Citadel, Point72 to Invest $2.75 Billion Into Melvin Capital Management - WSJ [0]
Read As: Melvin no longer has a short position. Citadel (edit: or like someone else said, a 3rd party) does. Citadel will handle this. Melvin is in time out.
We'll figure out who holds the chips in a few weeks time when filing deadlines are due. Thus it's dark.
Thus explains the perfectly executed short ladder today - could only be pulled off by someone with more dry powder than Melvin - but if you look at the Level II data, this is going to take a long, long time.
[0]https://www.wsj.com/articles/citadel-point72-to-invest-2-75-...