Optiver Holding B.V.

Optiver Holding B.V. declares $3.7B in 102 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 1.0% of its $370.7B 13F portfolio. Largest positions: Micron (0.06% of the company) and TSMC (0.03% of the company). Over time: $3.7B in 102 of these companies for Q2 2026, against $111.0M in 5 for Q1 2021 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $1.9B and sold $262.3M of these stocks, at the quarter's prices: a net purchase of $1.7B; 49 new positions and 44 sold out.

Performance of its AI picks

The AI-stock portfolio Optiver Holding B.V. declared for Q2 2026 (Form 13F), held unchanged, returned +5.2% in Q3 2026 (SMH -7.1%), ranked 555 of 1,783 active managers. Over the last 12 months, quarter after quarter: +87.0% (SMH +87.2%), ranked 47 of 1,359 active managers. Over three years, quarter after quarter: +348.7% (SMH +325.8%), ranked 23 of 783 active managers. Over five years, quarter after quarter: +287.6% (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. Micron (MU) — $803.5M: 696,131 shares, 0.06% of the company, 0.22% of its portfolio (added this quarter); held since Q1 2023
2. TSMC (TSM) — $702.6M: 1.5M shares, 0.03% of the company, 0.19% of its portfolio (added this quarter); held since Q4 2022
3. NVIDIA (NVDA) — $487.0M: 2.4M shares, 0.01% of the company, 0.13% of its portfolio (added this quarter); held since Q1 2023
4. Alphabet (GOOGL) — $268.8M: 756,349 shares, 0.01% of the company, 0.07% of its portfolio (added this quarter); held since Q1 2021
5. Oracle (ORCL) — $210.1M: 1.4M shares, 0.05% of the company, 0.06% of its portfolio (added this quarter); held since Q2 2024
6. Apple (AAPL) — $201.9M: 697,822 shares, 0.00% of the company, 0.05% of its portfolio (added this quarter); held since Q1 2023
7. Microsoft (MSFT) — $175.3M: 469,873 shares, 0.01% of the company, 0.05% of its portfolio (added this quarter); held since Q2 2022
8. Palantir (PLTR) — $105.4M: 903,102 shares, 0.04% of the company, 0.03% of its portfolio (added this quarter); held since Q4 2025
9. Amazon (AMZN) — $99.1M: 415,597 shares, 0.00% of the company, 0.03% of its portfolio (added this quarter); held since Q1 2025
10. Datadog (DDOG) — $82.2M: 315,559 shares, 0.09% of the company, 0.02% of its portfolio (new position this quarter)
11. Cloudflare (NET) — $74.9M: 305,258 shares, 0.09% of the company, 0.02% of its portfolio (new position this quarter)
12. Broadcom (AVGO) — $71.2M: 188,558 shares, 0.00% of the company, 0.02% of its portfolio (trimmed this quarter); held since Q4 2024
13. Adobe (ADBE) — $68.0M: 331,750 shares, 0.09% of the company, 0.02% of its portfolio (added this quarter); held since Q3 2025
14. Qualcomm (QCOM) — $60.1M: 325,032 shares, 0.03% of the company, 0.02% of its portfolio (added this quarter); held since Q4 2025
15. Super Micro Computer (SMCI) — $47.9M: 1.6M shares, 0.25% of the company, 0.01% of its portfolio (added this quarter); held since Q2 2025

By sector

• Chips & compute — $1.4B, 38% of its AI holdings, 22 companies
• Memory & storage — $809.8M, 22% of its AI holdings, 5 companies
• Cloud & AI giants — $749.2M, 20% of its AI holdings, 5 companies
• AI software — $620.2M, 17% of its AI holdings, 16 companies
• Servers & systems — $50.1M, 1% of its AI holdings, 5 companies
• Equipment & test — $13.2M, 0% of its AI holdings, 11 companies
• Neoclouds & data centers — $13.2M, 0% of its AI holdings, 11 companies
• Interconnect — $12.1M, 0% of its AI holdings, 4 companies
• Power, electrical & cooling — $5.6M, 0% of its AI holdings, 19 companies
• Optics — $1.1M, 0% of its AI holdings, 4 companies

Biggest changes this quarter

• added to NVIDIA (NVDA): +$473.1M at the quarter's price
• added to Alphabet (GOOGL): +$250.4M at the quarter's price
• added to Apple (AAPL): +$201.6M at the quarter's price
• added to Microsoft (MSFT): +$151.6M at the quarter's price
• added to Micron (MU): +$129.6M at the quarter's price
• added to Amazon (AMZN): +$94.0M at the quarter's price
• added to TSMC (TSM): +$88.3M at the quarter's price
• opened a position in Datadog (DDOG): +$82.2M at the quarter's price
• opened a position in Cloudflare (NET): +$74.9M at the quarter's price
• sold out of AMD (AMD): -$66.4M at the quarter's price

Other holders of this size

• CANTOR FITZGERALD, L. P. — $3.7B in 45 of these companies
• Elo Mutual Pension Insurance Co — $3.7B in 85 of these companies
• YOUSIF CAPITAL MANAGEMENT, LLC — $3.6B in 163 of these companies
• REGIONS FINANCIAL CORP — $3.7B in 100 of these companies
• Walleye Capital LLC — $3.6B in 194 of these companies
• Allen Investment Management, LLC — $3.7B in 36 of these companies
• Castle Hook Partners LP — $3.6B in 16 of these companies
• GREAT LAKES ADVISORS, LLC — $3.7B in 99 of these companies

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