Bittrex delisted Monero along with ZCash and Dash which was a weird decision sparking concerns about a regulator crackdown on privacy coins.
Monero is known to have the best privacy and we have also read previously about the IRS hiring Chainalysis to find a way to trace the transactions.
Can Bittrex know something others don't or acted before anyone else for their own reasons? Will Monero be delisted by more exchanges? Price drops and I'll be waiting to buy.
IMO, being the best in it privacy-oriented class is the business which regulators will never except. It seems Bittrex has got a wind of something from regulators bodies and to avoid their "sanctions" for trading private currencies has decided to delist them all together. This decision is difficult to explain by something other than fear.