Quote from Chicago_CTA:
OP,
you're ignorant on this matter. That's not a big fluctuation. For all you know, some of their institutional clients have been long stock index futures, and taking a hit.
What you should pay attention to, in my view, is the operating capital and excess capital.
I would view, perhaps a 50%+ decline in Cust. Seg. Funds as perhaps indicative of a bigger problem, but these numbers fluctuate greatly.
I cleared through MF Global while their Cust. Seg. Funds fell from about $10bb to ~$8bb.
It's really not a big deal.