The bulk of Tesla stock's surge this week can be attributed to the news coming out of China, in my opinion. However, it seems likely that at least a portion of Thursday's 3.1% rise was due to CEO Elon Musk's tweet on Wednesday evening announcing that the company will unveil its electric semi truck on Oct. 26. The unveil -- originally scheduled for September -- is old news that first came out in the spring, with the tentative date being the only new information.
News 
Market Data 
Discover 
