CNBC's stock market commentator, Jim Cramer, expressed optimism about the recent market rally, refusing to dismiss it as a short-term phenomenon. He observed a broad rally in various sectors, including financials, e-commerce stocks, and semiconductor equipment. He also noted the significant decrease in long-term yields following a reversal in the bond market. Companies like Apple Inc. and Starbucks Corp. reported positive sales results last week. However, he advised investors to wait for a pullback before buying Nvidia Corp. shares.