ACADIAN ASSET MANAGEMENT LLC

New 13F: Q3 2026

ACADIAN ASSET MANAGEMENT LLC filed its 13F for the quarter ended Sep 30, 2026 on Nov 9, 2026: $34.0B in AI and semiconductor stocks; $3.6B bought and $4.6B sold against its previous quarter, at the quarter's prices.

ACADIAN ASSET MANAGEMENT LLC declares $34.5B in 168 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 41.0% of its $84.2B 13F portfolio. Largest positions: Apple (0.11% of the company) and NVIDIA (0.08% of the company). Over time: $34.5B in 168 of these companies for Q2 2026, against $2.8B in 102 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $4.6B and sold $4.3B of these stocks, at the quarter's prices: a net purchase of $222.3M; 18 new positions and 12 sold out.

Performance of its AI picks

The AI-stock portfolio ACADIAN ASSET MANAGEMENT LLC declared for Q2 2026 (Form 13F), held unchanged, returned +1.5% in Q3 2026 (SMH -7.1%), ranked 1201 of 1,785 active managers. Over the last 12 months, quarter after quarter: +37.3% (SMH +87.2%), ranked 313 of 1,360 active managers. Over three years, quarter after quarter: +159.0% (SMH +325.8%), ranked 239 of 784 active managers. Over five years, quarter after quarter: +194.7% (SMH +389.8%), ranked 96 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. Apple (AAPL): $4.6B, 15.9M shares, 0.11% of the company, 5.5% of its portfolio (added this quarter); held since Q2 2020
  2. NVIDIA (NVDA): $3.9B, 19.5M shares, 0.08% of the company, 4.6% of its portfolio (added this quarter); held since Q4 2019 or earlier
  3. Alphabet (GOOGL): $3.2B, 8.9M shares, 0.07% of the company, 3.8% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  4. Amazon (AMZN): $2.0B, 8.5M shares, 0.08% of the company, 2.4% of its portfolio (added this quarter); held since Q2 2020
  5. Microsoft (MSFT): $1.8B, 4.8M shares, 0.07% of the company, 2.1% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  6. Applied Materials (AMAT): $1.4B, 2.0M shares, 0.25% of the company, 1.7% of its portfolio (trimmed this quarter); held since Q2 2020
  7. Micron (MU): $1.3B, 1.1M shares, 0.10% of the company, 1.6% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  8. Meta Platforms (META): $1.1B, 1.9M shares, 0.07% of the company, 1.3% of its portfolio (added this quarter); held since Q4 2019 or earlier
  9. Broadcom (AVGO): $1.1B, 2.8M shares, 0.06% of the company, 1.3% of its portfolio (added this quarter); held since Q4 2019 or earlier
  10. KLA (KLAC): $1.0B, 3.3M shares, 0.26% of the company, 1.2% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  11. ASML (ASML): $998.3M, 501,821 shares, 0.13% of the company, 1.2% of its portfolio (trimmed this quarter); held since Q2 2023
  12. Lam Research (LRCX): $905.8M, 2.1M shares, 0.17% of the company, 1.1% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
  13. Cisco (CSCO): $692.3M, 5.9M shares, 0.15% of the company, 0.82% of its portfolio (added this quarter); held since Q4 2019 or earlier
  14. Fortinet (FTNT): $679.2M, 4.4M shares, 0.60% of the company, 0.81% of its portfolio (added this quarter); held since Q2 2020
  15. AMD (AMD): $562.1M, 967,628 shares, 0.06% of the company, 0.67% of its portfolio (added this quarter); held since Q2 2020

By sector

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