SEI INVESTMENTS CO

New 13F: Q3 2026

SEI INVESTMENTS CO filed its 13F for the quarter ended Sep 30, 2026 on Nov 10, 2026: $35.8B in AI and semiconductor stocks; $2.4B bought and $1.9B sold against its previous quarter, at the quarter's prices.

SEI INVESTMENTS CO declares $34.2B in 219 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 30.1% of its $113.3B 13F portfolio. Largest positions: NVIDIA (0.09% of the company) and Alphabet (0.08% of the company). Over time: $34.2B in 219 of these companies for Q2 2026, against $5.1B in 138 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $1.3B and sold $5.4B of these stocks, at the quarter's prices: a net sale of $4.1B; 5 new positions.

Performance of its AI picks

The AI-stock portfolio SEI INVESTMENTS CO declared for Q2 2026 (Form 13F), held unchanged, returned +1.6% in Q3 2026 (SMH -7.1%), ranked 1187 of 1,785 active managers. Over the last 12 months, quarter after quarter: +27.7% (SMH +87.2%), ranked 751 of 1,360 active managers. Over three years, quarter after quarter: +137.6% (SMH +325.8%), ranked 500 of 784 active managers. Over five years, quarter after quarter: +140.6% (SMH +389.8%), ranked 367 of 535 active managers. Trades made during a quarter are not visible in 13F filings: this measures its declared picks, not the return of its funds.

Largest positions

  1. NVIDIA (NVDA): $4.1B, 22.6M shares, 0.09% of the company, 3.6% of its portfolio (added this quarter); held since Q4 2019 or earlier
  2. Alphabet (GOOGL): $3.4B, 9.7M shares, 0.08% of the company, 3.0% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  3. Apple (AAPL): $2.4B, 8.4M shares, 0.06% of the company, 2.2% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  4. Microsoft (MSFT): $2.2B, 5.9M shares, 0.08% of the company, 1.9% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  5. Amazon (AMZN): $2.1B, 9.4M shares, 0.09% of the company, 1.9% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  6. Broadcom (AVGO): $1.7B, 4.5M shares, 0.09% of the company, 1.5% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  7. Meta Platforms (META): $1.0B, 1.8M shares, 0.07% of the company, 0.90% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  8. TSMC (TSM): $1.0B, 2.1M shares, 0.04% of the company, 0.90% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  9. Micron (MU): $991.5M, 859,005 shares, 0.08% of the company, 0.87% of its portfolio (added this quarter); held since Q4 2019 or earlier
  10. AMD (AMD): $743.9M, 1.3M shares, 0.08% of the company, 0.66% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  11. ASML (ASML): $519.7M, 261,246 shares, 0.07% of the company, 0.46% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  12. GE Vernova (GEV): $418.3M, 356,048 shares, 0.13% of the company, 0.37% of its portfolio (trimmed this quarter); held since Q2 2024
  13. Lam Research (LRCX): $416.0M, 959,938 shares, 0.08% of the company, 0.37% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  14. Applied Materials (AMAT): $365.5M, 505,531 shares, 0.06% of the company, 0.32% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  15. Cisco (CSCO): $334.6M, 2.8M shares, 0.07% of the company, 0.30% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier

By sector

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