Electric vehicle maker Tesla Inc TSLA.O added 0.6% ahead of its earnings report after market close. By Echo Wang July 20 (Reuters) - Wall Street closed higher on Wednesday with the tech-heavy Nasdaq booking a nearly 2% gain on positive earnings signals with a wary eye on inflation and more interest rate hikes by the Fed. Other high-growth stocks extended gains following the forecast from the streaming service provider, including shares of Apple Inc AAPL.O, Amazon.com Inc AMZN.O, Microsoft Corp MSFT.O and Meta Platforms Inc META.O.