Optiver Holding B.V. — 13F holdings

Optiver Holding B.V. reported 2,950 holdings worth $371B in its 13F filing for Q2 2026, filed August 12, 2026.

Largest positions

1. SPDR S&P 500 ETF TR — $64.4B (17.4%)
2. SPDR S&P 500 ETF TR — $55.5B (15.0%)
3. INVESCO QQQ TR — $33.8B (9.1%)
4. INVESCO QQQ TR — $28.4B (7.7%)
5. ISHARES TR — $14.8B (4.0%)
6. MICRON TECHNOLOGY INC — $11.1B (3.0%)
7. ISHARES TR — $10.1B (2.7%)
8. SPDR GOLD TR — $9.52B (2.6%)
9. MICRON TECHNOLOGY INC — $8.69B (2.3%)
10. TESLA INC — $6.09B (1.6%)