Underfolio

Every trading day › 2026

The stock market on September 30, 2026

September 30, 2026, a Wednesday. Of 3,271 US stocks that traded, 1,094 rose and 2,111 fell.

Stocks that rose1,094of 3,271; 2,111 fell
Biggest companyNvidiaby market value that day

Biggest rises among the 500 largest companies

United Therapeutics Corp (UTHR)+12.6%
Genesis Healthcare, Inc. Common Stock (GEN)+5.6%
Cboe Global Markets (CBOE)+5.2%

Biggest falls among the 500 largest companies

Jabil (JBL)-10.0%
Moderna (MRNA)-5.3%
Applovin (APP)-5.0%

Stock moves count dividends; the index is price only. Market values after 2024 are estimates.

‹ September 29, 2026 · Every September 30

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.