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Semiconductor Index $SOX Surges 45% in a Month, Strongest 22-Day Run Since 2002

The semiconductor benchmark posted its best monthly gain in 26 years in April, reflecting a sharp rebound in chip-related equities, according to the post.

Fact Check
The core claim — that the SOX surged approximately 45% over a 22-day rolling window through early May 2026, representing its strongest such run since 2002 — is directly stated in the original @KobeissiLetter post and is broadly corroborated by multiple independent financial sources. Yahoo Finance confirms a 40%+ April gain; Investing.com/BTIG cites 37% for April month-end; Janus Henderson confirms 18 consecutive up days and a historically exceptional monthly gain. The variation between 37-45% across sources is explained by different measurement windows (calendar month vs. rolling 22-day period ending in early May). The characterization of 'strongest since 2002' and 'best in 26 years' is consistently echoed. The minor discrepancy in the exact percentage figure (the title says 45% while some sources cite ~37-40% for April alone) slightly reduces confidence but does not undermine the overall claim, which is directionally accurate and historically contextualized correctly.
Summary

The Semiconductor Index ($SOX) has risen 45% over the last month, marking its strongest 22-day return since 2002 and the third-strongest since the index’s data began in 1994. In April alone, the index gained 40%, its best monthly performance in 26 years and the second-best on record. The move highlights a powerful rally in semiconductor stocks, which often serve as a gauge for broader technology and chip demand trends.

Terms & Concepts
  • Semiconductor Index ($SOX): A stock index tracking major semiconductor companies, often used as a gauge for chip-sector performance.
  • 22-day return: The total price performance measured over a 22-trading-day period, roughly one month of market sessions.
  • record monthly performance: A benchmark’s strongest or near-strongest gain over a single calendar month in its available history.