Reddit's Trading Volume Surges 168 to 2.62 Billion as Shares Dip 0.07 Percent Despite 35th Market Activity Rank

On September 17, 2025, Reddit (RDDT) recorded a trading volume of $2.62 billion, marking a 168.46% increase from the previous day and ranking 35th in market activity. Despite the surge in liquidity, the stock closed with a 0.07% decline, reflecting mixed investor sentiment amid evolving market dynamics.

Recent developments highlight Reddit's strategic focus on monetizing its user base through platform enhancements. The company has accelerated the rollout of premium subscription tiers and expanded its ad network to include targeted content placements within community forums. Analysts note these initiatives aim to diversify revenue streams beyond traditional display advertising, though execution risks remain a concern for short-term volatility.

Market participants are closely monitoring Reddit's ability to balance user experience with commercialization efforts. Recent regulatory scrutiny of online platforms has intensified investor caution, particularly as the company navigates data privacy laws and content moderation challenges. While the strong volume spike suggests heightened interest, the marginal price decline indicates potential profit-taking by traders assessing near-term fundamentals.

To run this back-test rigorously I first need to pin down two details that are not yet explicit: 1) Market universe—should I rank all primary-listed U.S. common stocks (NYSE + NASDAQ) each day, or a different equity universe (e.g., only S&P 500 constituents, or a non-U.S. market)? 2) Trading assumptions—am I correct that you would like to open the positions at each day’s close and exit at the next day’s close, with equal weighting across the 500 names and no transaction costs or slippage? Once these points are confirmed I can generate the data-gathering plan and run the back-test.