Is Nvidia about to kick off an explosive rally for Luminar stock?Luminar (LAZR 23.12%) stock is posting huge gains in Monday's trading. The lidar company's share price was up 20.7% as of 1:30 p.m. ET amid the backdrop of a 0.9% jump for the S&P 500 index and gains of 1.4% for the Nasdaq Composite index.Luminar stock is soaring today thanks to surging bullish momentum for the semiconductor industry. Its share price is also gaining ground because investors are betting that Nvidia could share news about its pa ...