Tesla Is Jumping Today -- Is the Stock a Buy?

After sell-offs in yesterday's trading, Tesla (TSLA 4.88%) stock is rising Wednesday. The company's share price was up 4.6% as of 2 p.m. ET amid the backdrop of a 0.3% gain for the S&P 500 and a 0.7% gain for the Nasdaq Composite. The stock had been up as much as 5.4% earlier in the session.Tesla published its second-quarter vehicle delivery figures yesterday, and the company's valuation is climbing despite a big performance drop-off. News that the U.S. has reached a trade agreement with Vietnam is supporti ...