Duquesne Family Office LLC
Duquesne Family Office LLC declares $1.3B in 18 of the 220 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 24.3% of its $5.2B 13F portfolio. Largest positions: TSMC (0.01% of the company) and STMicroelectronics (0.35% of the company). Over time: $1.3B in 18 of these companies for Q2 2026, against $616.9M in 11 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $684.6M and sold $227.0M of these stocks, at the quarter's prices: a net purchase of $457.6M; 12 new positions and 10 sold out.
Performance of its AI picks
The AI-stock portfolio Duquesne Family Office LLC declared for Q2 2026 (Form 13F), held unchanged, returned -11.5% in Q3 2026 (SMH -7.1%), ranked 1660 of 1,776 active managers. Over the last 12 months, quarter after quarter: +95.3% (SMH +87.2%), ranked 38 of 1,356 active managers. Over three years, quarter after quarter: +515.6% (SMH +325.8%), ranked 3 of 782 active managers. Over five years, quarter after quarter: +699.8% (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
- TSMC (TSM) — $281.6M: 589,680 shares, 0.01% of the company, 5.4% of its portfolio (added this quarter); held since Q3 2024
- STMicroelectronics (STM) — $232.4M: 3.1M shares, 0.35% of the company, 4.5% of its portfolio (added this quarter); held since Q4 2025
- Amazon (AMZN) — $129.1M: 541,600 shares, 0.01% of the company, 2.5% of its portfolio (added this quarter); held since Q3 2025
- Alphabet (GOOGL) — $120.2M: 336,300 shares, 0.00% of the company, 2.3% of its portfolio (new position this quarter)
- Seagate (STX) — $117.7M: 122,000 shares, 0.05% of the company, 2.3% of its portfolio (added this quarter); held since Q1 2026
- Sandisk (SNDK) — $79.4M: 34,900 shares, 0.02% of the company, 1.5% of its portfolio (trimmed this quarter); held since Q1 2026
- Bitdeer (BTDR) — $64.7M: 4.1M shares, 1.7% of the company, 1.2% of its portfolio (new position this quarter)
- AMD (AMD) — $42.3M: 72,900 shares, 0.00% of the company, 0.81% of its portfolio (new position this quarter)
- Palo Alto Networks (PANW) — $39.8M: 116,650 shares, 0.01% of the company, 0.76% of its portfolio (new position this quarter)
- Hut 8 (HUT) — $36.3M: 314,150 shares, 0.25% of the company, 0.70% of its portfolio (new position this quarter)
- Rambus (RMBS) — $23.0M: 173,000 shares, 0.16% of the company, 0.44% of its portfolio (new position this quarter)
- Entegris (ENTG) — $21.3M: 118,300 shares, 0.08% of the company, 0.41% of its portfolio (new position this quarter)
- Riot Platforms (RIOT) — $20.7M: 754,800 shares, 0.20% of the company, 0.40% of its portfolio (new position this quarter)
- Equinix (EQIX) — $19.2M: 18,450 shares, 0.02% of the company, 0.37% of its portfolio (new position this quarter)
- Lam Research (LRCX) — $18.9M: 43,600 shares, 0.00% of the company, 0.36% of its portfolio (new position this quarter)
By sector
- Chips & compute — $566.3M, 45% of its AI holdings, 4 companies
- Cloud & AI giants — $249.3M, 20% of its AI holdings, 2 companies
- Memory & storage — $197.1M, 16% of its AI holdings, 2 companies
- Neoclouds & data centers — $144.8M, 11% of its AI holdings, 5 companies
- Equipment & test — $40.2M, 3% of its AI holdings, 2 companies
- AI software — $39.8M, 3% of its AI holdings, 1 company
- Interconnect — $23.0M, 2% of its AI holdings, 1 company
- Power, electrical & cooling — $5.6M, 0% of its AI holdings, 1 company
Biggest changes this quarter
- opened a position in Alphabet (GOOGL): +$120.2M at the quarter's price
- added to Amazon (AMZN): +$118.2M at the quarter's price
- added to Seagate (STX): +$68.8M at the quarter's price
- opened a position in Bitdeer (BTDR): +$64.7M at the quarter's price
- sold out of Broadcom (AVGO): -$60.7M at the quarter's price
- added to TSMC (TSM): +$45.1M at the quarter's price
- opened a position in AMD (AMD): +$42.3M at the quarter's price
- opened a position in Palo Alto Networks (PANW): +$39.8M at the quarter's price
- added to STMicroelectronics (STM): +$36.7M at the quarter's price
- opened a position in Hut 8 (HUT): +$36.3M at the quarter's price