Shares of Aurora Mobile (NASDAQ: JG) , a Chinese provider of "big data" solutions to mobile app developers, surged after the company announced a deal with a global maker of new energy vehicles that it didn't name. While it didn't name its new partner, it did describe it, and the description seems to match a certain California-based electric-vehicle maker whose stock has had a very good year.
As of 10 a.m. EST, Aurora's shares were up about 63.3% from Monday's closing price.
I'll say this up front: It's all a bit mysterious, which should always make investors wary.
For further details see:
What Is Aurora Mobile and Why Was Its Stock Up Over 60% Today?