Circle is a company that really has a diverse protocol of potenial offerings. They have proved that they can expand by launching new and improved initiatives along the way and by managing things like Circle Trade.
Now, Circle are in talks and of wanting to expand their horizons with Circle Invest, which an easy to use app to buy crypto, and Poloniex, a full-fledged exchange will ultimately benefit from this acquisition in my opinion.
I think we will soon see the market cap rise again towards that value of 800 million and surpass the ATH

Cheers!