Nvidia topped expectations again in its first-quarter earnings report.Shares of Nvidia (NVDA 10.75%) were soaring again after the GPU superstar posted better-than-expected results in its first-quarter earnings report and offered strong guidance for the second quarter.The company also surprised investors with a 10-for-1 stock split.As a result, the stock was up 10.8% on the news as of 12:49 p.m. ET. Nvidia wows Wall Street againNvidia has been the biggest winner on the stock market in the artificial intellig ...