Reddit Inc. posted its strongest quarter since going public, reporting second-quarter revenue of $500 million, a 78% jump from a year earlier and well ahead of analysts’ $426 million estimate. Diluted earnings per share reached $0.45, more than double the $0.19 Wall Street expected, as the social-media platform swung to a $89 million profit from a $10 million loss a year ago. Adjusted EBITDA climbed to $167 million, exceeding projections of about $129 million, while gross margin widened to 90.8%. User engagement and advertising continued to accelerate. Daily active users grew 21% to 110.4 million, and advertising sales rose 84% to $465 million. Average revenue per user advanced 47% to $4.53, buoyed in part by new AI-powered ad and search tools. “Reddit is built for this moment,” Chief Executive Officer Steve Huffman said in a shareholder letter, citing momentum across revenue and profitability metrics. For the current quarter, Reddit forecast revenue of $535 million to $545 million and adjusted EBITDA of $185 million to $195 million, both comfortably above consensus estimates. The upbeat results and guidance sent the shares up more than 10% in post-market trading, adding to a rally that has taken the stock above $175 since its March 2024 debut.