Alyeska Investment Group, L.P.

Alyeska Investment Group, L.P. declares $10.0B in 80 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 25.7% of its $38.9B 13F portfolio. Largest positions: CoreWeave (2.0% of the company) and Meta Platforms (0.06% of the company). Over time: $10.0B in 80 of these companies for Q2 2026, against $1.4B in 32 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $5.3B and sold $6.0B of these stocks, at the quarter's prices: a net sale of $728.0M; 33 new positions and 18 sold out.

Performance of its AI picks

The AI-stock portfolio Alyeska Investment Group, L.P. declared for Q2 2026 (Form 13F), held unchanged, returned +6.4% in Q3 2026 (SMH -7.1%), ranked 382 of 1,785 active managers. Over the last 12 months, quarter after quarter: +58.2% (SMH +87.2%), ranked 125 of 1,360 active managers. Over three years, quarter after quarter: +220.5% (SMH +325.8%), ranked 75 of 784 active managers. Over five years, quarter after quarter: +349.7% (SMH +389.8%), ranked 14 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. CoreWeave (CRWV): $1.1B, 10.9M shares, 2.0% of the company, 2.8% of its portfolio (added this quarter); held since Q1 2025
2. Meta Platforms (META): $837.9M, 1.5M shares, 0.06% of the company, 2.2% of its portfolio (added this quarter); held since Q4 2021
3. Salesforce (CRM): $730.3M, 4.7M shares, 0.57% of the company, 1.9% of its portfolio (new position this quarter)
4. Arista Networks (ANET): $537.7M, 3.2M shares, 0.25% of the company, 1.4% of its portfolio (new position this quarter)
5. Microsoft (MSFT): $499.1M, 1.3M shares, 0.02% of the company, 1.3% of its portfolio (added this quarter); held since Q3 2024
6. Amazon (AMZN): $422.3M, 1.8M shares, 0.02% of the company, 1.1% of its portfolio (trimmed this quarter); held since Q3 2021
7. Amphenol (APH): $408.7M, 4.6M shares, 0.19% of the company, 1.1% of its portfolio (trimmed this quarter); held since Q4 2025
8. Analog Devices (ADI): $355.6M, 895,211 shares, 0.18% of the company, 0.92% of its portfolio (added this quarter); held since Q1 2026
9. Seagate (STX): $281.2M, 291,439 shares, 0.13% of the company, 0.72% of its portfolio (added this quarter); held since Q4 2025
10. NVIDIA (NVDA): $239.7M, 1.2M shares, 0.01% of the company, 0.62% of its portfolio (trimmed this quarter); held since Q1 2026
11. Equinix (EQIX): $210.9M, 202,302 shares, 0.20% of the company, 0.54% of its portfolio (added this quarter); held since Q3 2024
12. Broadcom (AVGO): $195.9M, 518,725 shares, 0.01% of the company, 0.50% of its portfolio (added this quarter); held since Q4 2025
13. Lumentum (LITE): $193.1M, 225,032 shares, 0.25% of the company, 0.50% of its portfolio (new position this quarter)
14. Synopsys (SNPS): $177.7M, 398,350 shares, 0.21% of the company, 0.46% of its portfolio (new position this quarter)
15. SBA Communications (SBAC): $175.1M, 992,057 shares, 0.95% of the company, 0.45% of its portfolio (new position this quarter)

By sector

• Neoclouds & data centers: $2.0B, 20% of its AI holdings, 13 companies
• Cloud & AI giants: $1.8B, 18% of its AI holdings, 4 companies
• AI software: $1.8B, 18% of its AI holdings, 14 companies
• Interconnect: $1.1B, 11% of its AI holdings, 5 companies
• Chips & compute: $1.0B, 10% of its AI holdings, 11 companies
• Power, electrical & cooling: $646.0M, 6% of its AI holdings, 15 companies
• Servers & systems: $611.4M, 6% of its AI holdings, 6 companies
• Optics: $469.0M, 5% of its AI holdings, 5 companies
• Memory & storage: $331.4M, 3% of its AI holdings, 4 companies
• Equipment & test: $202.5M, 2% of its AI holdings, 3 companies

Biggest changes this quarter

• trimmed Micron (MU): -$2.3B at the quarter's price
• trimmed NVIDIA (NVDA): -$900.4M at the quarter's price
• opened a position in Salesforce (CRM): +$730.3M at the quarter's price
• trimmed Amazon (AMZN): -$623.7M at the quarter's price
• opened a position in Arista Networks (ANET): +$537.7M at the quarter's price
• added to CoreWeave (CRWV): +$388.0M at the quarter's price
• sold out of Cisco (CSCO): -$333.7M at the quarter's price
• added to Meta Platforms (META): +$313.8M at the quarter's price
• added to Microsoft (MSFT): +$267.4M at the quarter's price
• sold out of AMD (AMD): -$242.7M at the quarter's price

Schedule 13D/G declarations

• Grid Dynamics (GDYN): 13G filed Aug 14, 2026: 6.1M shares as of Jun 30, 2026, 7.2% as declared
• Grid Dynamics (GDYN): 13G filed May 15, 2026: 5.3M shares as of Mar 31, 2026, 6.2% as declared
• Grid Dynamics (GDYN): 13G filed Feb 17, 2026: 3.8M shares as of Dec 31, 2025, 4.5% as declared
• Grid Dynamics (GDYN): 13G filed Nov 14, 2025: 4.3M shares as of Sep 30, 2025, 5.1% as declared

Other holders of this size

• Harel Insurance Investments & Financial Services Ltd.: $9.8B in 85 of these companies
• NISSAY ASSET MANAGEMENT CORP /JAPAN: $10.0B in 118 of these companies
• Woodline Partners LP: $9.8B in 121 of these companies
• WEALTH ENHANCEMENT ADVISORY SERVICES, LLC: $10.2B in 161 of these companies
• Czech National Bank: $9.8B in 93 of these companies
• EAGLE CAPITAL MANAGEMENT LLC: $10.2B in 10 of these companies
• Atreides Management, LP: $9.7B in 22 of these companies
• JACOBS LEVY EQUITY MANAGEMENT, INC: $10.2B in 71 of these companies

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