Charles Schwab reported this week that its Schwab Trading Activity Index (STAX) edged up to 59.80 in July from 59.12 in June, as the brokerage's clients stayed net buyers and took advantage of late-month market pullbacks to increase their exposure across individual stocks, ETFs, and options.

STAX is a proprietary, behavior-based gauge that tracks retail investor positioning and trading activity across Schwab's millions of client accounts, providing a monthly snapshot of how investors are allocated in the markets. The index is scored on a scale from 0 to 100, with higher readings indicating greater trading intensity relative to historical norms.

"While major indices posted strong gains in July, those gains masked the fact that many individual stocks performed unevenly—while some stocks rose sharply, others struggled," said Joe Mazzola, head trading and derivatives strategist at Charles Schwab.

Mazzola noted that clients were selective in their approach, purchasing stocks that had recently pulled back while locking in profits on names that had already appreciated significantly.

Schwab highlighted that macroeconomic data during the period was broadly positive, with particular strength in employment and manufacturing figures, though inflation persisted as a concern. At its late-July meeting, the Federal Reserve's policy-setting committee held its benchmark interest rate steady in a target range of 3.5% to 3.75%, a decision that drew three dissenting votes from officials who favored an additional rate increase. Three dissents at a single Federal Open Market Committee meeting are historically uncommon and signal meaningful internal debate over the pace of policy tightening.

In ETF and equity trading, Schwab clients were net buyers by a two-to-one margin. Options activity leaned toward put selling, a strategy typically associated with a neutral-to-bullish outlook, as it generates premium income and reflects a willingness to purchase shares at the strike price if assigned. Notable concentration was observed in technology stocks as well as the semiconductor and memory chip industries. The strongest buying interest was observed among Gen X clients and self-directed traders.

Among the most actively purchased names during the period were Space Exploration Technologies, Micron Technology, Intel, Oracle, and Tesla. Conversely, clients were net sellers of Apple, Advanced Micro Devices, Broadcom, PayPal, and Adobe.