Reddit, Inc. shares rose 12.6% to $178.09 following the announcement that the company would be added to the S&P 500 before trading began later that week. J.P. Morgan estimated that index-tracking funds would need exposure equivalent to approximately 16.7 million Reddit shares, representing nearly three times the company’s average daily trading volume of 5.98 million shares since its initial public offering in March 2024.
The addition creates measurable near-term demand for the stock, though it does not alter the company’s underlying operating performance. Prior to the rally, Reddit shares had declined more than 31% during the year and traded more than 42% below their intraday peak in September 2025, reflecting investor concerns regarding search traffic and user growth trends. The inclusion is expected to deepen liquidity and expand institutional ownership while raising the company’s visibility among large benchmark-focused investors.
Reddit’s operating business provided support beyond the index catalyst. Second-quarter revenue increased 61% to $805 million, exceeding the $730.4 million consensus estimate, while advertiser count rose more than 70%. The company also issued third-quarter revenue guidance of $860 million to $870 million, above the $829.1 million analyst estimate, and adjusted EBITDA guidance of $385 million to $395 million, which exceeded the $369 million consensus.
Historical analysis suggested that the gains from index inclusion may prove temporary. According to Stephens research, new S&P 500 members historically lagged the index by approximately 2% during the three months following inclusion, with the largest gains typically occurring immediately after the announcement. Reddit faced ongoing challenges with U.S. user growth, where daily active unique visitors increased 6% in the second quarter, down from 7% in the preceding quarter due to search algorithm changes. International user growth remained robust at 28%, but average revenue per user in that segment was $2.26 compared with $11.85 in the United States.
The sustainability of the stock’s rally would depend on attracting long-term investors after index-related buying demand concluded. Index membership would not directly address Reddit’s reliance on search engines, conversion of search-driven visitors to direct users, or advertising economics. Hedge fund ownership had declined to 70 funds at the end of the first quarter of 2026 from 82 funds three months earlier, according to available data.
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