SanDisk Corp. closed at $1,740 on Friday, experiencing an 11.9 percent increase as the stock posted its third consecutive day of gains. The rally was driven by investor positioning ahead of the company’s inclusion in the S&P 100 index, which was announced as part of the S&P Dow Jones Indices quarterly rebalancing. The memory manufacturer will join the index on September 21, along with Dell Technologies, Palo Alto Networks, and Arista Networks, replacing Honeywell Aerospace, Nike Inc., Simon Property Group, and Colgate-Palmolive.
Analysts noted that index inclusion represents a notable development for the company, as it could broaden visibility among institutional and global investors and potentially drive increased demand for shares. Funds tracking the S&P 100 will need to adjust their portfolios to reflect the revised index composition, which could contribute to continued buying pressure.
Beyond index-related factors, the stock’s advance was also supported by upcoming investor conferences. Management confirmed that SanDisk would participate in the Citi 2026 Global TMT Conference on September 8 and Goldman Sachs’ Communacopia + Technology Conference 2026 on September 9. The Citi conference is expected to focus on topics including AI innovation, enterprise AI adoption and infrastructure demand, edge computing, and emerging trends in digital commerce.
Institutional investor interest in the company strengthened considerably during the second quarter. Data indicated that 128 hedge funds held positions during that period, compared to 114 in the first quarter. More significantly, the combined holdings of these hedge funds increased by 125 percent to $25.6 billion from $11.3 billion on a quarter-over-quarter basis.
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