Dimensional

New 13F: Q3 2026

Dimensional filed its 13F for the quarter ended Sep 30, 2026 on Nov 4, 2026: $164.0B in AI and semiconductor stocks; $3.5B bought and $2.8B sold against its previous quarter, at the quarter's prices.

Dimensional declares $161.4B in 205 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 29.2% of its $551.8B 13F portfolio. Largest positions: NVIDIA (0.39% of the company) and Apple (0.41% of the company). Over time: $161.4B in 205 of these companies for Q2 2026, against $40.3B in 158 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $3.9B and sold $6.8B of these stocks, at the quarter's prices: a net sale of $3.0B; 6 new positions.

Performance of its AI picks

The AI-stock portfolio Dimensional declared for Q2 2026 (Form 13F), held unchanged, returned +1.3% in Q3 2026 (SMH -7.1%), ranked 1225 of 1,785 active managers. Over the last 12 months, quarter after quarter: +36.9% (SMH +87.2%), ranked 324 of 1,360 active managers. Over three years, quarter after quarter: +161.9% (SMH +325.8%), ranked 221 of 784 active managers. Over five years, quarter after quarter: +178.8% (SMH +389.8%). 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): $19.0B, 94.8M shares, 0.39% of the company, 3.4% of its portfolio (added this quarter); held since Q4 2019 or earlier
  2. Apple (AAPL): $17.2B, 59.5M shares, 0.41% of the company, 3.1% of its portfolio (added this quarter); held since Q4 2019 or earlier
  3. Microsoft (MSFT): $11.4B, 30.6M shares, 0.41% of the company, 2.1% of its portfolio (added this quarter); held since Q4 2019 or earlier
  4. Alphabet (GOOGL): $11.4B, 31.9M shares, 0.26% of the company, 2.1% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  5. Amazon (AMZN): $10.0B, 42.0M shares, 0.39% of the company, 1.8% of its portfolio (added this quarter); held since Q4 2019 or earlier
  6. Micron (MU): $7.8B, 6.8M shares, 0.60% of the company, 1.4% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  7. Meta Platforms (META): $6.4B, 11.3M shares, 0.44% of the company, 1.2% of its portfolio (added this quarter); held since Q4 2019 or earlier
  8. Broadcom (AVGO): $4.9B, 13.1M shares, 0.27% of the company, 0.90% of its portfolio (added this quarter); held since Q4 2019 or earlier
  9. Cisco (CSCO): $2.9B, 25.1M shares, 0.64% of the company, 0.53% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  10. Caterpillar (CAT): $2.9B, 2.7M shares, 0.60% of the company, 0.53% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  11. Lam Research (LRCX): $2.6B, 6.0M shares, 0.48% of the company, 0.47% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  12. Intel (INTC): $2.5B, 17.7M shares, 0.33% of the company, 0.45% of its portfolio (added this quarter); held since Q4 2019 or earlier
  13. AMD (AMD): $2.3B, 3.9M shares, 0.24% of the company, 0.41% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  14. ASML (ASML): $2.2B, 1.1M shares, 0.28% of the company, 0.40% of its portfolio (added this quarter); held since Q4 2019 or earlier
  15. KLA (KLAC): $2.1B, 7.0M shares, 0.54% of the company, 0.38% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier

By sector

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