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October lifted the S&P 500 in 45 of 76 years since 1950 despite its crash reputation. September is the weakest month, with a 0.6% average loss.
Oct 19, 2026
The S&P 500 fell 20.5% on Black Monday 39 years ago today. A year later it was 23.2% higher, a better one-year return than after the 1929 and 2008 crashes.
The month sees some of the market's worst crashes but its track record still tells a more bullish story.
Apple is up 26.3% this year and Tesla is down 21.1%, a 47-point gap between the best and worst Magnificent 7 stocks. The S&P 500 is up 11.9%.
Oct 18, 2026
Tesla reports Wednesday after the close. Its last 8 post-earnings moves averaged 7.8% either way, from a 21.9% jump to a 14.5% drop.
Netflix reports Tuesday after five straight post-earnings drops averaging 6.9%. The biggest was a 10.1% drop after its October 2025 report.
Hedge fund manager Thomas Hayes' highest-conviction idea for the next three years.
Oct 17, 2026
Meta, Tesla, IBM, Texas Instruments, Lam Research and SAP report Wednesday and Netflix reports Tuesday.
The iShares Semiconductor ETF fell 11.8% this week, six times the S&P 500's 2.0% drop. Micron lost 14.6% and AMD 13.0%.
Rosen tells the Silvia Investor Summit why buying the S&P 500 is a bet on AI, and which stocks he owns.
Oct 16, 2026
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