I have to admit to being somewhat confused by this. I was under the impression that if you had a short position in a company that gets delisted, you don't have to pay back anything.In addition to the excellent replies you've already received I will add a couple nuances:
- Another risk to shorting is delisting (due to bankruptcy, buyouts, etc). This is less talked about & less likely to happen probability-wise, but if it happens to you and you are holding an excessive position size - it can bankrupt your balance. This is b/c you may have to pay interest for months to years on the delisted stock with little to no recourse. As an example, CMTA (Clementia Pharmaceuticals) was bought out by a private equity firm & de-listed on 4/17/19. Attached to that buyout offer was contingent value rights. So once the stock officially de-listed, you'd still be holding the CVR attached to the now de-listed stock. That CVR holds charges a 0.25% daily compounded interest rate for 5 YEARS (until 12/31/19). Imagine if you had a $10,000 position size (still small by many who trade here) and were forced to pay any legally asked interest rate on that position compounded daily for 5 years?
https://www.investopedia.com/ask/answers/maintain-short-position-delisted-stock/