Nvidia Under-Owned, SanDisk Over-Owned by Institutional Investors
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Nvidia Under-Owned, SanDisk Over-Owned by Institutional Investors
- Morgan Stanley's latest data, as of August 18, 2026, indicates that Nvidia is the most under-owned large-cap tech stock, with its institutional ownership 2.53 percentage points below its S&P 500 weighting.
- Conversely, SanDisk is identified as the most "over-owned" large-cap tech name, with its institutional ownership exceeding its S&P 500 weighting by 2.30% as of August 18, 2026.
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A recent analysis by Morgan Stanley, utilizing data from 100 actively managed institutional portfolios covering 28 large-cap technology stocks, reveals a notable divergence in institutional investor positioning between Nvidia and SanDisk.
Nvidia, a prominent player in the AI sector, is currently the most under-owned large-cap technology stock within this framework. Its institutional ownership lags its S&P 500 weighting by 2.53 percentage points, a gap that widened by 14 basis points in the second quarter of 2026. This suggests that active managers have less exposure to Nvidia than its market capitalization would imply, despite its significant $5.45 trillion market cap. Other tech giants like Apple, Microsoft, and Amazon also show similar, though smaller, ownership gaps.
In contrast, SanDisk stands out as the most “over-owned” large-cap tech stock. Its institutional ownership is 2.30 percentage points above its S&P 500 weighting. This premium has been steadily increasing since SanDisk’s re-listing in early 2025 and remained elevated even after its inclusion in the S&P 500 in the fourth quarter of 2025.
Morgan Stanley’s analysis also suggests a potential trend: stocks with lower active ownership relative to the S&P 500 have tended to outperform, while heavily owned stocks have generally lagged. This pattern indicates a “clear institutional bias towards AI ‘picks and shovels’ / bottlenecks,” such as memory and storage-related companies. As of March 2026, institutional investors collectively held approximately 77.1% of SanDisk’s outstanding shares. For Nvidia, institutional investors collectively hold approximately 64-68% of its shares as of September 2025.