Webull's $1.97 Billion Volume Spike Ranks 39th as Shares Fall 1.09% Amid Mixed Market Sentiment

On October 8, 2025, Webull (BULL) recorded a trading volume of $1.97 billion, marking a 318.42% increase from the previous day’s volume and ranking 39th among all stocks traded that day. The stock closed at a 1.09% decline, reflecting mixed market sentiment amid broader trading activity.

Recent developments highlighted volatility in Webull’s trading dynamics. A surge in institutional buying pressure was noted, with several large-volume trades executed during morning sessions. Analysts attributed this to renewed interest in the company’s recent product enhancements, including expanded options trading capabilities and margin account improvements. However, retail investor activity showed signs of caution, as evidenced by declining short-term options open interest.

Market participants observed a correlation between Webull’s volume spike and broader sector rotation trends. The stock’s inclusion in several thematic ETFs focused on fintech innovation contributed to its elevated profile. Meanwhile, regulatory updates regarding digital brokerage licensing in key markets added a layer of uncertainty, prompting selective selling from position-trading accounts.

To set up a rigorous back-test we need to pin down a few practical details first: 1. Stock universe • All U.S. common stocks? • Only constituents of a specific index (e.g., Russell 3000, S&P 500)? • Another market? 2. Position sizing and weighting • Equal weight for each of the 500 names purchased each day? • Or dollar-volume proportional, etc.? 3. Execution price • Buy at next day’s open, hold until that day’s close (typical intraday hold)? • Or buy at today’s close, sell at tomorrow’s close (24-hour hold)? 4. Transaction costs / slippage • Should we include commissions or a per-trade slippage estimate?