Thanks so much Sig. So let's say there is an ETN that has a "value" of $100 on day 1 - that is, ignoring the issuer credit risk, if the ETN was liquidated the issuer would owe $100 on it. I short it. On day 2, the stock markets world wide collapse. The ETNs "value" drops to $70 at the close of day 2. However, in the after-market hours, the issuer announces that it has filed for bankruptcy. It is guesstimated that all that will get ultimately paid out on the ETN is $20, rather than the $70 closing "value".
So, realistically, how much margin could the brokerage tie up? If it tied up $70 worth of margin, I'd be ok with that, even if it took years, because I would know at the end of the day I would make about 80% ($100 I short less the ~$20 expected recovery).
Obviously one thing I would be worried about is the broker having some abnormal margin requirements just given that there is "uncertainty". That is, even though the expected recovery is only $20, they have some margin based on some much, much higher number just because there is "uncertainty". To your knowledge can they or do they ever do this?
Even more worrisome is what you mentioned about still having to return the shares that I borrowed. Let's say that, as above, the issuer has declared bankruptcy, the return on each share is expected to be $20, and the person whose shares I borrowed calls the broker and says it wants its shares back. Obviously I can't give them back because they ceased being traded. What happens then? What is my liability? Surely it has to be capped at either $70, the last trading price, or the ~$20 expected recovery?
Thanks!