Investors await US CPI data for Fed rate signal

September 6, 2026 at 05:59 PM2 min

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Investors will focus on the US Consumer Price Index report due September 11 for signals on whether the Federal Reserve will raise interest rates at its September 15-16 meeting. The S&P 500 ended the week with a slim gain, about 1% below its mid-August record high. Uncertainty over the rate path has left markets bracing for volatility tied to the inflation data.

Key Facts

The US Consumer Price Index report for August is due on September 11, a day after the Producer Price Index report on September 10.
Economists polled by Reuters expect a 0.4% monthly rise in August CPI and a 0.2% rise in the core measure excluding food and energy.
The Federal Reserve's next policy meeting is scheduled for September 15-16, with markets pricing in a possible rate hike.
The S&P 500 has gained nearly 13% in 2026 and ended the latest week about 1% below its mid-August record high.

Inflation Data Focus

Investors will zero in on the monthly Consumer Price Index report, due September 11, which is Wall Street's most closely watched inflation gauge. The Producer Price Index report on September 10 will give an initial glimpse at August inflation trends during the holiday-shortened week. Economists polled by Reuters expect a 0.4% monthly rise in August CPI and a 0.2% rise in the core measure excluding food and energy. Inflation has run consistently above the Fed's 2% annual target for several years, though the prior month's CPI reading showed prices barely increased.

Rate Path Uncertainty

Markets have been consumed in recent weeks by prospects of a rate increase at the Fed's next meeting on September 15-16. Bets on a hike ramped up after a speech late last month from Fed Chairman Kevin Warsh that signaled the central bank might have to act if inflation remains high. The case for a hike built further on Friday after a strong labor market report, but the potential for such a move remained up in the air. Sid Vaidya, chief investment strategist at TD Wealth, said CPI will certainly move the needle one way or the other, so there is a lot riding on this report.

Market Positioning

The S&P 500 ended the week with a slim gain and was about 1% shy of its mid-August record high. Equities were jostled by changes in rate-path expectations and concerns that rising US Treasury yields could trip up Wall Street's rally. The S&P 500 has gained nearly 13% in 2026, underpinned by an exceptionally strong year for corporate profits. Investors have braced for a potential pullback in September, which historically is the weakest month of the year for US stocks.