At this moment the demand is not listed on a global stock exchange. But when it is listed, the volume will increase too.
And why do not you like OKEx. It is an excellent exchanger with a good trading volume. By the same AUTO plan to flood on HitBtc by the middle of the month. I think everything will be ok.

I think the Okex is a reliable exchange with enough trading volume, there is no need to pay money for listing on other exchanges, the dev team should take good care of the development.
I also like to trade AUTO on that exchange, recently, there is reward activity there, if you deposit AUTO and trade them, you will get extra AUTO as reward. So, if you want to buy or sell AUTO, you can go there.