Oklo Shares Drop 9.18% Amid $5.34 Billion Volume Surge, Ranking 15th in Market Trading Activity

Oklo (OKLO) closed 9.18% lower on Sept. 25, 2025, as trading volume surged to $5.34 billion—a 55.1% increase from the previous day—ranking it 15th in overall trading activity. The sharp decline in share price came amid broader market volatility, though specific catalysts remain unclear from available data.

The stock’s performance followed a pattern of elevated liquidity but declining valuation metrics. Analysts noted the unusually high volume-to-price divergence, which often signals short-term speculative pressure or algorithmic trading activity. However, no direct company-specific news or sector-wide developments were reported to directly influence the stock’s movement.

To run a back-test with our current tool-set, I need to clarify one key point: the “strategy_backtest_engine” we can invoke works on a single tradable symbol (one ticker or one index). It cannot simultaneously open positions in hundreds of individual stocks each day. There are two practical ways to proceed: (1) Approximate the “top-500-by-volume” basket with a single tradable proxy, such as the S&P 500 index ETFs (e.g., RSP or SPY), enabling a “buy and hold for one day” simulation. (2) For an exact equal-weight portfolio of the daily top-500 stocks, a custom multi-asset simulation would be required outside the one-ticker engine, which is not feasible within this interface. Please specify your preferred approach, and I will execute the back-test accordingly.