It is https://btc-alpha.com
They occupy 81 place in Coinmarketcap and have a volume trade of 6 million a day.
Listing fee is 1.5btc.
So we ask you fill out the form, in which you need to specify your nickname on the channel and the amount that you can donate to the listing.
If you not have Discord account than use bitcointalk account with prefix bit! Example: bit!pegascoin
If you are not ready to donate money for listing on this exchange, fill out the form too, but specify the amount equal to zero.
Please fill out the form all once.
Thank you.
Link to form: https://goo.gl/forms/I1z6i0CXxRSje2RF2
Stocks.exchange is fine, I'd recommend focus on dev and features described in the whitepaper.