SKN | Schwab Trading Activity Index Rises as Investors Balance Growth and Inflation Risks

Key Takeaways:

• The Schwab Trading Activity Index™ (STAX) rose to 58.92 in September from 57.50 in August, indicating stronger retail-investor activity and positioning.
• Schwab clients favored Consumer Discretionary, Industrials, Consumer Staples and Financials while using diversified ETFs to maintain market exposure and manage individual-stock risk.
• Investor sentiment became more cautious heading into October, with 50% of surveyed clients describing themselves as bearish and approximately 76% expecting at least one additional Federal Reserve rate hike before year-end.

Retail Investors Increased Market Activity Despite Inflation Concerns

The Schwab Trading Activity Index™ rose to 58.92 in September from 57.50 in August, pointing to stronger retail-investor activity even as inflation and interest-rate concerns remained prominent.

The proprietary, behavior-based index draws on positions and trading activity across a statistically significant sample of Schwab’s funded client accounts. Rather than measuring sentiment through surveys alone, STAX is designed to show how investors were actually positioned and what they were trading during the month.

The September reading suggested that Schwab clients remained willing to participate in the market despite a macroeconomic backdrop characterized by persistent inflation concerns and higher interest rates.

Joe Mazzola, Head Trading Strategist at Charles Schwab, said the investment mix indicated that clients wanted to maintain market exposure while reducing some of the risks associated with individual stocks. ETFs accounted for five of the ten most purchased securities during the period, the first time that occurred in the STAX data cited by Schwab.

Sector Positioning Favors Diversification

Seven of the 11 S&P 500 sectors recorded net buying during September. Consumer Discretionary, Industrials, Consumer Staples and Financials attracted the strongest net buying, while Information Technology, Communication Services and Health Care experienced the largest net selling.

The positioning suggests that retail investors were not simply abandoning equities amid inflation concerns. Instead, the data indicates a willingness to remain invested while adjusting the composition of portfolios.

The increased use of ETFs is particularly relevant. Broad-based funds can provide diversified exposure while reducing dependence on the performance of individual companies. For wealth managers, this behavior highlights how retail investors are increasingly able to manage portfolio concentration and market exposure through low-friction investment vehicles.

Gen X clients continued to lead net buying among the demographic groups tracked by Schwab, while the more active traders measured by STAX remained significantly more inclined toward net buying than less active investors.

Options Activity Signals Continued Confidence in Growth Exposure

Options activity also reflected a relatively constructive positioning during September. Schwab clients maintained upside exposure through ETF call buying and put selling in technology stocks, particularly semiconductor and memory-chip companies.

This behavior indicates that, despite broader concerns about rates and inflation, some investors continued to seek participation in areas of the market associated with growth and technology.

The combination of diversified ETF buying and targeted exposure to growth stocks suggests a two-track approach: maintaining broad market participation while selectively adding risk where investors see stronger potential.

Higher Rates Are Changing Investor Expectations

The macroeconomic environment remained central to investor positioning. Strong U.S. manufacturing and retail-sales data, together with a hotter-than-expected August core Consumer Price Index reading, reinforced concerns that inflation could remain persistent.

The source states that the Federal Reserve responded with a 25-basis-point rate increase, described as its first increase in three years. Later in September, the Atlanta Fed’s GDPNow estimate indicated third-quarter GDP growth tracking at an annualized 5% pace, prompting investors to consider the possibility of another rate increase in October.

Oil prices also increased as Middle East tensions intensified, while Treasury yields moved higher amid rate increases by the Federal Reserve and other central banks. By the end of the STAX period, the U.S. 10-year Treasury yield was near 5.2%, its highest level since 2007 according to the source.

The dollar strengthened while gold weakened in the more hawkish rate environment.

Investor Sentiment Turns More Defensive for October

Although September trading activity remained constructive, Schwab’s survey of more than 450 clients showed a more cautious outlook for October.

Bullish sentiment declined to 17% from 22% month over month, while bearish sentiment increased to 50% from 38%. Active traders remained more constructive than other investors, with 58% saying they would be willing to buy a market decline compared with 31% of other respondents.

Inflation expectations were also notable. Approximately 76% of respondents expected at least one additional Federal Reserve rate hike before year-end, while 83% considered a return to the Fed’s 2% inflation target before the end of 2027 unlikely.

The contrast between actual September positioning and October expectations is important. Investors remained active and generally constructive in their portfolios, but their forward-looking sentiment became considerably more cautious.

Closing Insights

The September STAX reading points to a retail-investor base that remained engaged despite inflation, higher Treasury yields and expectations for further monetary tightening. The preference for ETFs alongside selective growth exposure suggests investors were seeking participation while managing concentration and volatility risks.

For global wealth investors, the data offers a useful behavioral signal rather than a standalone market forecast. Retail positioning can provide insight into how investors are responding to rates, inflation and market volatility, but it should be considered alongside earnings, valuations, liquidity and broader macroeconomic conditions.

The most important shift may be the divergence between September behavior and October expectations. Investors continued buying risk assets during September, but growing expectations for persistent inflation and higher rates could make portfolio diversification and liquidity management increasingly important.

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