Institutional Manager · CIK 0001835549
ENGINE NO. 1 LLC
San Francisco, CA · File #028-20881
Latest AUM
$88.6M
Positions
6
Top-10 Concentration
100.0%
Filings
8
Portfolio Value Over Time
2023-12
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | FIRST SOLAR INC | 336433107 | +48,000 | +$10.6M | $0 |
| EXITED | EATON CORP PLC | G29183103 | -29,000 | -$10.4M | $0 |
| NEW | HERC HLDGS INC | 42704L104 | +74,000 | +$8.6M | $0 |
| ADD | VERTIV HOLDINGS CO | 92537N108 | +38,000 | +$5.7M | +$2.7M |
| NEW | SPDR GOLD TR | 78463V107 | +13,100 | +$4.7M | $0 |
| REDUCE | HUBBELL INC | 443510607 | 0 | $0 | +$219,000 |
| REDUCE | POWELL INDS INC | 739128106 | 0 | $0 | +$11.2M |
Filing History
- 13F HOLDINGS REPORTQ/E Sep 20256 pos · $88.6M
- 13F HOLDINGS REPORTQ/E Jun 20254 pos · $55.1M
- 13F HOLDINGS REPORTQ/E Mar 20254 pos · $78.3M
- 13F HOLDINGS REPORTQ/E Dec 20245 pos · $37.6M
- 13F HOLDINGS REPORTQ/E Sep 20246 pos · $50.5M
- 13F HOLDINGS REPORTQ/E Jun 202411 pos · $95.3M
- 13F HOLDINGS REPORTQ/E Mar 202410 pos · $84.5M
- 13F HOLDINGS REPORTQ/E Dec 202313 pos · $189.9M
Top 6 Holdings — Sep 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | POWELL INDS INC | 739128106 | 119,000 | $36.3M | 40.95% |
| 2 | VERTIV HOLDINGS CO | 92537N108 | 160,000 | $24.1M | 27.25% |
| 3 | FIRST SOLAR INC | 336433107 | 48,000 | $10.6M | 11.95% |
| 4 | HERC HLDGS INC | 42704L104 | 74,000 | $8.6M | 9.74% |
| 5 | SPDR GOLD TR | 78463V107 | 13,100 | $4.7M | 5.26% |
| 6 | HUBBELL INC | 443510607 | 10,000 | $4.3M | 4.86% |