You get what you pay for. Quantopian also fails to be able to product Tick bars....which are essential IMHO for short-term automated trading. I think their most granual bar is a 1 minute bar.
Valeant gets upgraded...who'd have thought that ???....up 12% today !!
http://www.marketwatch.com/story/troubled-drug-company-valeant-handed-second-upgrade-of-the-week-2016-08-17
Agreed, but a lot of traders love it. I couldn't believe the one stock that was mentioned on CNBC after the close yesterday was WYNN as it was hyped by actor Steve Guggenheim, a guest to the show. I was like WTF ?*>#$@??
In effect, this is a bet against the economy in China. No doubt there is risk in this trade as China is not always truthful in the statements or stats on their economy.