Flutter's $1.57B Volume Spike Propels It to 56th in U.S. Rankings

On October 7, 2025, Flutter (FLUT) saw a surge in trading activity with a volume of $1.57 billion, marking a 97.81% increase from the previous day's volume. This elevated liquidity ranked the stock 56th among all listed equities for the day, despite a 3.69% decline in its share price.

The unusual volume spike suggests potential short-term trading activity driven by either algorithmic strategies or shifts in market sentiment. While no specific corporate announcements were disclosed, the divergence between price action and volume indicates possible profit-taking or hedging pressures in the immediate term. Investors are advised to monitor order flow dynamics as key liquidity levels are tested in the coming sessions.

To build an accurate back-test I need to pin down a few practical details that aren’t fully specified yet: 1. Universe • Should I rank all U.S. listed common stocks, or a narrower set (e.g., S&P 500 constituents)? 2. Volume definition • Rank by share volume or by dollar volume (shares × close price)? 3. Trade timing • Enter at today’s close and exit at tomorrow’s close (typical “hold one trading-day” rule)? 4. Position sizing • Equal-weight across the 500 names, or weight by volume/market-cap/something else? 5. Frictions • Assume zero transaction costs and no slippage, or apply estimates?

Once these points are clarified I can generate the daily selection list, feed it into the back-test engine, and return the performance statistics and visuals.