WIX Tumbles 13.42% with $820M Volume—Ranks 158th in U.S. Equity Trading Activity

On October 1, 2025, Wix.com (WIX) closed down 13.42%, marking a significant decline despite a surge in trading volume. The stock's $820 million in daily trading volume ranked it 158th among U.S. equities, reflecting heightened investor activity amid mixed market sentiment.

The sharp drop followed a lack of material catalysts in its recent operational updates. While the company had previously highlighted its expanding SaaS platform adoption, analysts noted no new earnings or partnership announcements to justify the volatility. Short-term traders appeared to capitalize on elevated volume, though long-term fundamentals remained unchanged.

Backtesting parameters for a volume-based trading strategy require clarification on key variables. These include universe scope (full U.S. market vs. S&P 500), execution timing (close vs. open prices), cost assumptions, and portfolio rebalancing frequency. Confirmation of these details will determine whether the "top 500 by volume" approach generates actionable signals for WIX or other equities between January 3, 2022, and October 1, 2025.

To run this back-test accurately I need to pin down a couple of details that weren’t specified: 1. Universe • Do you want to rank all U.S. listed equities, the S&P 500 constituents, or another universe (e.g. Russell 3000, your own watch-list)? • If you truly mean *all* U.S. stocks, please confirm—this requires processing 5,000-plus tickers every day. 2. Execution price • Buy at the same-day close and sell at the next-day close (my default), or use next-day open/close prices instead? 3. Trading frictions • Should I assume zero transaction costs and perfect liquidity, or apply a commission/slippage estimate? 4. Portfolio treatment • You specified “top 500 stocks by daily trading volume” every day. The result is an equal-weight portfolio re-balanced daily. Please confirm that equal weighting is what you want. Once these points are set, I can generate the required daily pick list, create entry/exit signals and run the back-test from 2022-01-03 to today. Let me know your preferences and I’ll proceed.