Aehr Test Systems (NASDAQ: AEHR) stock jumped 45.9% in October, according to data from S&P Global Market Intelligence. For context, the S&P 500 and Nasdaq Composite indexes returned 8.1% and 3.9%, respectively, last month.

The primary catalyst for its stock's big gain was the semiconductor test and reliability qualification equipment supplier's release of a robust report for its first quarter of fiscal 2023, which ended Aug. 31, 2022.

This month, Aehr stock is up 3.7% as of Nov. 7, while the S&P 500 is down 1.7% over this period.

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Source Fool.com