Schwab Trading Activity Index™: STAX Score Continues Climb Amid August Enthusiasm

(NYSE:SCHW) WESTLAKE, Texas--(BUSINESS WIRE)--The Schwab Trading Activity Index™ (STAX) increased to 43.69 in August, up from its score of 41.79 in July. The only index of its kind, the STAX is a proprietary, behavior-based index that analyzes retail investor stock positions and trading activity from Schwab’s millions of client accounts to illuminate what investors were actually doing and how they were positioned in the markets each month. The reading for the four-week period ending August 24, 2025, ranks