As far as I know, bittrex will be halting BitShares trading on it's centralized exchange. If you don't have a BitShares wallet yet, now is the time to create one! Here is my signup link ready for you to click and start your journey trading in a decentralized manner, using a blockchain, the way it should be!
Also be sure to check out the BitShares block explorer at CryptoFresh
You can see who is trading what and much more, cool stuff!
p.s. I learned a little more markdown for this post :)