SoFi Tumbles 2.81% as $1.98 Billion Volume Ranks 42nd in U.S. Equities Amid Macroeconomic Jitters and Sector Volatility
On October 3, 2025, SoFi TechnologiesSOFI-- (SOFI) closed with a 2.81% decline, trading on $1.98 billion in volume that ranked it 42nd among U.S. equities. The drop followed mixed signals from market participants assessing the fintech firm’s operational trajectory amid evolving consumer lending trends.
Analysts noted heightened sensitivity in the stock to macroeconomic indicators, particularly interest rate expectations, which remain pivotal for high-growth consumer finance platforms. While SoFi’s digital mortgage and personal loan services have shown resilience in Q3, investor sentiment appears tempered by broader sector volatility. Recent earnings commentary highlighted margin pressures from competitive pricing in its core markets, though management reiterated confidence in long-term market share gains.
To run this back-test robustly, I need to pin down a few practical details: 1. Universe—Should we use all U.S. listed common stocks (≈ 4,000 names) or a particular index universe (e.g., Russell 3000)? 2. Ranking convention—I’ll rank by the previous day’s total dollar trading volume (shares × close). That way the information is known before we trade the next morning. Is that acceptable? 3. Trade mechanics—Entry: buy at next day’s open. Exit: sell at the same day’s close (i.e., a one-day holding period). Equal-weight across the 500 names each day. 4. Frictional costs—Should we include an assumed transaction cost or slippage? If so, how much? 5. Benchmark (optional)—Any index you’d like shown alongside for comparison? Once I have your confirmation (or any adjustments), I’ll run the back-test and share the results.

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