MFN Partners Management, LP
MFN Partners Management, LP declares $1.2B in 1 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 23.8% of its $4.8B 13F portfolio. Largest positions: Talen Energy (6.3% of the company). Over time: $1.2B in 1 of these companies for Q2 2026, against $185.0M in 2 for Q1 2020 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought nothing and sold nothing of these stocks, at the quarter's prices: a net purchase of $0.00.
Performance of its AI picks
The AI-stock portfolio MFN Partners Management, LP declared for Q2 2026 (Form 13F), held unchanged, returned -18.6% in Q3 2026 (SMH -7.1%). Over the last 12 months, quarter after quarter: -26.5% (SMH +87.2%). Trades made during a quarter are not visible in 13F filings: this measures its declared picks, not the return of its funds.
Largest positions
- Talen Energy (TLN) — $1.2B: 3.0M shares, 6.3% of the company, 23.8% of its portfolio; held since Q3 2024
By sector
- Power, electrical & cooling — $1.2B, 100% of its AI holdings, 1 company
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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