August 2026 US Stock Market Analysis: Daily Reports

Up (S&P 500 +0.1% or more)

Down (S&P 500 fell 0.1% or more)

Flat (within ±0.1%)

Market Closed

Each trading day is colored by the S&P 500 (SPY) close-to-close change: green for gains of +0.1% or more, red for losses of −0.1% or more, yellow for flat sessions within ±0.1%.

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Monthly Market Summary

Through 21 trading days in August 2026 the S&P 500 has recorded 9 up days, 10 down days and 2 flat days, leaving the market tone mixed-to-mildly negative so far. Risk-on leadership is concentrated in software and biotech, with Enterprise Software up 26.2%, Cybersecurity up 13.8% and Biotech up 13.5% month-to-date. Conversely, more cyclical and infrastructure-exposed names lag, as Industrial is down 6.0%, AI Power & Grid is off 9.2% and Airlines have plunged 15.5%. Overall, the market is exhibiting selective strength rather than broad-based breadth, with momentum favoring tech-adjacent growth names while cyclical sectors struggle.

US Stock Market Sector Analysis – August 2026

Monthly Market Summary

Daily Reports