SanDisk jumps more than 11.9% after S&P 100 addition set for September 21
SanDisk will be added to the S&P 100 ahead of Sept. 21, triggering a sharp one-day rally and potentially driving incremental index-tracking and benchmark-driven demand. The inclusion reinforces the stock's AI-infrastructure momentum after an outsized year-to-date surge, and highlights concentrated institutional ownership (notably Vanguard and major ETFs), which can amplify flows and liquidity dynamics around the rebalance.
AI Insight · NCSKSNDK2USD/USDTAI Insight
▲ Bullish
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SanDisk said it will be added to the S&P 100 on September 21, sending the memory-chip maker’s shares up more than 11.9% in a single session. The stock is up 633% year to date. Major institutional holders include Vanguard, Vanguard Index Funds, and Fidelity Mt. Vernon Street Trust.