ATLAS Infrastructure Partners (UK) Ltd.

ATLAS Infrastructure Partners (UK) Ltd. declares $955.5M in 3 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 29.0% of its $3.3B 13F portfolio. Largest positions: Public Service Enterprise (1.2% of the company) and Exelon (0.75% of the company). Over time: $955.5M in 3 of these companies for Q2 2026, against $194.0M in 2 for Q2 2023 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $533.5M and sold $88.6M of these stocks, at the quarter's prices: a net purchase of $444.9M; 1 new position.

Performance of its AI picks

The AI-stock portfolio ATLAS Infrastructure Partners (UK) Ltd. declared for Q2 2026 (Form 13F), held unchanged, returned -14.1% in Q3 2026 (SMH -7.1%). Over the last 12 months, quarter after quarter: -13.5% (SMH +87.2%). Over three years, quarter after quarter: +28.7% (SMH +325.8%). 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. Public Service Enterprise (PEG) — $500.2M: 6.2M shares, 1.2% of the company, 15.2% of its portfolio (added this quarter); held since Q2 2025
2. Exelon (EXC) — $361.3M: 7.8M shares, 0.75% of the company, 11.0% of its portfolio (new position this quarter)
3. SBA Communications (SBAC) — $94.0M: 532,422 shares, 0.50% of the company, 2.8% of its portfolio (trimmed this quarter); held since Q1 2026

By sector

• Power, electrical & cooling — $861.6M, 90% of its AI holdings, 2 companies
• Neoclouds & data centers — $94.0M, 10% of its AI holdings, 1 company

Biggest changes this quarter

• opened a position in Exelon (EXC): +$361.3M at the quarter's price
• added to Public Service Enterprise (PEG): +$172.1M at the quarter's price
• trimmed SBA Communications (SBAC): -$88.6M at the quarter's price

Other holders of this size

• Vanguard — $3.6T in 225 of these companies
• BlackRock — $3.1T in 226 of these companies
• State Street — $1.6T in 222 of these companies
• Fidelity (FMR) — $1.2T in 223 of these companies
• Geode Capital — $890.9B in 220 of these companies
• Capital Group — $881.7B in 132 of these companies
• JPMorgan — $717.8B in 225 of these companies
• Invesco — $683.3B in 220 of these companies

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