Engine No. 1 LLC
In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 14, 2025), Engine No. 1 LLC reported 6 stock positions worth $88.6 million. Its top holding was Powell Industries (POWL) at 40.9% of the portfolio, followed by Vertiv Class A (VRT, 27.2%) and First Solar (FSLR, 11.9%). Compared with Q2 2025, it opened 3 new positions, sold out of 1 and added to 1. The biggest buy was a new position in First Solar (FSLR) and the biggest sale an exit from Eaton (ETN).
- Most Recent 13F
- Q3 2025
- Location
- San Francisco, CA
- CIK
- 0001835549
- Portfolio Value
- $88.6M (Q3 2025)
- SEC Filing
- 0001420506-25-003257 ↗ filed Nov 14, 2025
Holdings Value
Holdings 6 stocks · $88.6M
| POWL Powell Industries Inc. | 40.95% | 119,000 | $36.3M | No change |
| VRT Vertiv Holdings Co. Class A | 27.25% | 160,000 | $24.1M | Add +31.1% |
| FSLR First Solar Inc. | 11.95% | 48,000 | $10.6M | New |
| HRI Herc Holdings Inc. filed as HERC HLDGS INC | 9.74% | 74,000 | $8.6M | New |
| GLD SPDR Gold Shares | 5.26% | 13,100 | $4.7M | New |
| HUBB Hubbell Inc. | 4.86% | 10,000 | $4.3M | No change |
Portfolio Sells Q2 2025 → Q3 2025
| ETN Eaton Corp. PLC | Sold out | 0.00% | −18.77 |
Portfolio Buys Q2 2025 → Q3 2025
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q3 2025 | 6 | $88.6M | POWL, VRT, FSLR, HRI, GLD |
| Q2 2025 | 4 | $55.1M | POWL, VRT, ETN, HUBB |
| Q1 2025 | 4 | $78.3M | INTC, POWL, AR, ETN |
| Q4 2024 | 5 | $37.6M | POWL, BKR, HUBB, FLS, CENX |
| Q3 2024 | 6 | $50.5M | VRT, POWL, FSLR, HUBB, XOM |
| Q2 2024 | 11 | $95.3M | VRT, AMAT, ASML, HUBB, POWL |
| Q1 2024 | 10 | $84.5M | VRT, HUBB, AMAT, XOM, MSFT |