What happened: Reddit (RDDT) stock plunged nearly 21% on Friday, its largest intraday decline since the company went public. However, US daily active users came in at 53.2 million, just shy of expectations of 54 million. The company's total daily active users grew by 18% to 130.3 million versus estimates of 130.07 million. At the same time, Huffman noted "headwinds" in search referrals as AI changes how users discover online content. Click here for in-depth analysis of the latest stock market news and events moving stock pricesRead the latest financial and business news from Yahoo Finance