September 2025 US Stock Market Analysis: Daily Reports | 2ndOcean

> 2ndOcean_

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%.

← August 2025 September 2025 October 2025 →

Mon

Tue

Wed

Thu

Fri

1

Labor Day

Monthly Market Summary

September 2025 closed with a positive tone, as the S&P 500 recorded 13 up days, 7 down days and 1 flat day across 21 trading sessions. The rally was led by Chip Equipment (+33.3%), Infrastructure (+15.3%) and Chip Supply Chain (+12.2%), which accounted for much of the upside. Underperformance was concentrated in Telecom (-5.3%), Analog & Embedded Chips (-5.9%) and Airlines (-7.6%). Overall the month exhibited a clear bullish bias driven by strength in semiconductor-related sectors despite these pockets of weakness.

Daily Reports