Asset Management One Co., Ltd.

New 13F: Q3 2026

Asset Management One Co., Ltd. filed its 13F for the quarter ended Sep 30, 2026 on Oct 27, 2026: $17.8B in AI and semiconductor stocks; $350.5M bought and $112.5M sold against its previous quarter, at the quarter's prices.

• added to Sandisk (SNDK): +$95.0M at the quarter's price
• added to Apple (AAPL): +$40.9M at the quarter's price
• added to NVIDIA (NVDA): +$36.8M at the quarter's price
• added to Microsoft (MSFT): +$23.2M at the quarter's price
• added to Snowflake (SNOW): +$12.8M at the quarter's price
• added to Palantir (PLTR): +$10.8M at the quarter's price
• trimmed CrowdStrike (CRWD): -$10.7M at the quarter's price
• added to nVent (NVT): +$10.6M at the quarter's price
• added to Digital Realty (DLR): +$10.5M at the quarter's price
• trimmed Arista Networks (ANET): -$9.2M at the quarter's price

Asset Management One Co., Ltd. declares $16.8B in 131 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 43.1% of its $39.0B 13F portfolio. Largest positions: NVIDIA (0.04% of the company) and Apple (0.05% of the company). Over time: $16.8B in 131 of these companies for Q2 2026, against $5.0B in 84 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $354.6M and sold $177.4M of these stocks, at the quarter's prices: a net purchase of $177.1M; 5 new positions and 2 sold out.

Performance of its AI picks

The AI-stock portfolio Asset Management One Co., Ltd. declared for Q2 2026 (Form 13F), held unchanged, returned +4.3% in Q3 2026 (SMH -7.1%), ranked 767 of 1,785 active managers. Over the last 12 months, quarter after quarter: +28.6% (SMH +87.2%), ranked 681 of 1,360 active managers. Over three years, quarter after quarter: +148.4% (SMH +325.8%), ranked 371 of 784 active managers. Over five years, quarter after quarter: +163.3% (SMH +389.8%), ranked 240 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): $2.2B, 10.8M shares, 0.04% of the company, 5.5% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
2. Apple (AAPL): $1.9B, 6.7M shares, 0.05% of the company, 5.0% of its portfolio (added this quarter); held since Q4 2019 or earlier
3. Alphabet (GOOGL): $1.8B, 5.1M shares, 0.04% of the company, 4.7% of its portfolio (added this quarter); held since Q4 2019 or earlier
4. Microsoft (MSFT): $1.3B, 3.4M shares, 0.05% of the company, 3.3% of its portfolio (added this quarter); held since Q4 2019 or earlier
5. Amazon (AMZN): $1.1B, 4.7M shares, 0.04% of the company, 2.9% of its portfolio (added this quarter); held since Q4 2019 or earlier
6. Broadcom (AVGO): $811.4M, 2.1M shares, 0.04% of the company, 2.1% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
7. Micron (MU): $612.0M, 530,154 shares, 0.05% of the company, 1.6% of its portfolio (added this quarter); held since Q4 2019 or earlier
8. Meta Platforms (META): $604.4M, 1.1M shares, 0.04% of the company, 1.6% of its portfolio (added this quarter); held since Q4 2019 or earlier
9. AMD (AMD): $442.8M, 762,209 shares, 0.05% of the company, 1.1% of its portfolio (added this quarter); held since Q4 2019 or earlier
10. Caterpillar (CAT): $340.8M, 320,025 shares, 0.07% of the company, 0.87% of its portfolio (added this quarter); held since Q4 2019 or earlier
11. Intel (INTC): $292.5M, 2.1M shares, 0.04% of the company, 0.75% of its portfolio (added this quarter); held since Q4 2019 or earlier
12. Lam Research (LRCX): $273.2M, 630,534 shares, 0.05% of the company, 0.70% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
13. Applied Materials (AMAT): $267.7M, 370,282 shares, 0.05% of the company, 0.69% of its portfolio (added this quarter); held since Q4 2019 or earlier
14. Cisco (CSCO): $251.5M, 2.1M shares, 0.05% of the company, 0.65% of its portfolio (added this quarter); held since Q4 2019 or earlier
15. KLA (KLAC): $210.6M, 698,179 shares, 0.05% of the company, 0.54% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier

By sector

• Cloud & AI giants: $6.8B, 40% of its AI holdings, 6 companies
• Chips & compute: $4.3B, 26% of its AI holdings, 20 companies
• Power, electrical & cooling: $1.5B, 9% of its AI holdings, 34 companies
• AI software: $1.0B, 6% of its AI holdings, 20 companies
• Memory & storage: $843.0M, 5% of its AI holdings, 5 companies
• Equipment & test: $842.1M, 5% of its AI holdings, 9 companies
• Interconnect: $527.4M, 3% of its AI holdings, 8 companies
• Neoclouds & data centers: $488.5M, 3% of its AI holdings, 13 companies
• Servers & systems: $326.1M, 2% of its AI holdings, 10 companies
• Optics: $191.8M, 1% of its AI holdings, 6 companies

Biggest changes this quarter

• trimmed NVIDIA (NVDA): -$66.6M at the quarter's price
• added to Apple (AAPL): +$38.1M at the quarter's price
• added to Micron (MU): +$26.8M at the quarter's price
• added to Microsoft (MSFT): +$25.4M at the quarter's price
• added to Alphabet (GOOGL): +$23.6M at the quarter's price
• added to Applied Materials (AMAT): +$22.0M at the quarter's price
• added to Marvell (MRVL): +$20.5M at the quarter's price
• trimmed Lam Research (LRCX): -$16.5M at the quarter's price
• added to AMD (AMD): +$16.1M at the quarter's price
• added to Amazon (AMZN): +$16.0M at the quarter's price

Other holders of this size

• Tidal Investments LLC: $16.8B in 204 of these companies
• PARNASSUS INVESTMENTS, LLC: $16.9B in 35 of these companies
• Cohen & Steers, Inc.: $16.8B in 51 of these companies
• Renaissance Technologies: $17.1B in 148 of these companies
• Cetera Investment Advisers: $15.9B in 211 of these companies
• ALKEON CAPITAL MANAGEMENT LLC: $17.3B in 32 of these companies
• SANDS CAPITAL MANAGEMENT, LLC: $15.9B in 29 of these companies
• Treasurer of the State of North Carolina: $17.5B in 145 of these companies

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