Tairen Capital Ltd
Tairen Capital Ltd declares $891.5M in 24 of the 220 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 78.7% of its $1.1B 13F portfolio. Largest positions: TSMC (0.01% of the company) and AMD (0.01% of the company). Over time: $891.5M in 24 of these companies for Q2 2026, against $237.9M in 11 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $482.9M and sold $770.8M of these stocks, at the quarter's prices: a net sale of $288.0M; 13 new positions and 11 sold out.
Performance of its AI picks
The AI-stock portfolio Tairen Capital Ltd declared for Q2 2026 (Form 13F), held unchanged, returned -6.7% in Q3 2026 (SMH -7.1%), ranked 1574 of 1,776 active managers. Over the last 12 months, quarter after quarter: +166.3% (SMH +87.2%), ranked 1 of 1,356 active managers. Over three years, quarter after quarter: +467.7% (SMH +325.8%), ranked 4 of 782 active managers. Over five years, quarter after quarter: +363.5% (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) — $216.2M: 452,800 shares, 0.01% of the company, 19.1% of its portfolio (added this quarter); held since Q1 2025
- AMD (AMD) — $99.4M: 171,100 shares, 0.01% of the company, 8.8% of its portfolio (added this quarter); held since Q1 2026
- Lumentum (LITE) — $91.8M: 106,960 shares, 0.12% of the company, 8.1% of its portfolio (added this quarter); held since Q3 2025
- Marvell (MRVL) — $86.1M: 288,880 shares, 0.03% of the company, 7.6% of its portfolio (new position this quarter)
- Corning (GLW) — $75.1M: 294,169 shares, 0.03% of the company, 6.6% of its portfolio (added this quarter); held since Q1 2026
- Intel (INTC) — $65.5M: 469,340 shares, 0.01% of the company, 5.8% of its portfolio (trimmed this quarter); held since Q3 2024
- Qualcomm (QCOM) — $56.1M: 303,691 shares, 0.03% of the company, 5.0% of its portfolio (new position this quarter)
- Celestica (CLS) — $39.4M: 108,000 shares, 0.09% of the company, 3.5% of its portfolio (new position this quarter)
- Broadcom (AVGO) — $37.5M: 99,160 shares, 0.00% of the company, 3.3% of its portfolio (new position this quarter)
- Micron (MU) — $36.7M: 31,805 shares, 0.00% of the company, 3.2% of its portfolio (trimmed this quarter); held since Q1 2026
- Ciena (CIEN) — $17.0M: 34,720 shares, 0.02% of the company, 1.5% of its portfolio (new position this quarter)
- Teradyne (TER) — $15.5M: 32,000 shares, 0.02% of the company, 1.4% of its portfolio (trimmed this quarter); held since Q3 2025
- SiTime (SITM) — $9.3M: 12,500 shares, 0.04% of the company, 0.82% of its portfolio (new position this quarter)
- Kulicke & Soffa (KLIC) — $8.4M: 62,786 shares, 0.12% of the company, 0.74% of its portfolio (new position this quarter)
- BWX Technologies (BWXT) — $7.8M: 40,000 shares, 0.04% of the company, 0.69% of its portfolio (new position this quarter)
By sector
- Chips & compute — $570.6M, 64% of its AI holdings, 8 companies
- Optics — $189.5M, 21% of its AI holdings, 4 companies
- Servers & systems — $46.4M, 5% of its AI holdings, 2 companies
- Memory & storage — $39.5M, 4% of its AI holdings, 2 companies
- Equipment & test — $31.7M, 4% of its AI holdings, 6 companies
- Power, electrical & cooling — $7.8M, 1% of its AI holdings, 1 company
- Interconnect — $6.0M, 1% of its AI holdings, 1 company
Biggest changes this quarter
- trimmed Micron (MU): -$264.9M at the quarter's price
- added to TSMC (TSM): +$138.6M at the quarter's price
- trimmed Sandisk (SNDK): -$116.6M at the quarter's price
- opened a position in Marvell (MRVL): +$86.1M at the quarter's price
- trimmed Applied Materials (AMAT): -$62.5M at the quarter's price
- trimmed Lam Research (LRCX): -$60.4M at the quarter's price
- opened a position in Qualcomm (QCOM): +$56.1M at the quarter's price
- trimmed Intel (INTC): -$53.5M at the quarter's price
- added to Lumentum (LITE): +$44.8M at the quarter's price
- sold out of Alphabet (GOOGL): -$42.8M at the quarter's price