ENGINE NO. 1 LLC
Regulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
Portfolio style
Measured from the filed 13F common-share book for Sep 30, 2025, never from the firm's own description.
Closest benchmark: the Russell 2000 as of 2025-09-30, active share 99.8%; sector active share 74.5% against the combined 13F book's sector weights.
Over time 20 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
6 tracked positions · as of Sep 30, 2025 · Δ vs Jun 30, 2025Portfolio Trend
Sector Breakdown
As of Sep 30, 2025| Sector | % Portfolio | Value |
|---|---|---|
| Industrials | 82.8% | $73,345,918 |
| Technology | 11.9% | $10,585,440 |
| Unclassified | 5.3% | $4,656,657 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| VRT | Vertiv Holdings Co | +38,000 | 160,000 | $24,137,600 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reducedSold Out
Positions the filer fully exited| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| ETN | Eaton Corp plc | 29,000 | $10,352,710 | |
| No positions match the current search. | ||||
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| POWL |
Powell Industries Inc
Industrials
|
Held | 119,000 | $36,272,378 | 40.95% | |
| VRT |
Vertiv Holdings Co
Industrials
|
Added | 160,000 | $24,137,600 | 27.25% | |
| FSLR |
First Solar, Inc.
Technology
|
NEW | 48,000 | $10,585,440 | 11.95% | |
| HRI |
Herc Holdings Inc
Industrials
|
NEW | 74,000 | $8,632,840 | 9.74% | |
| GLD |
Spdr Gold Trust
|
NEW | 13,100 | $4,656,657 | 5.26% | |
| HUBB |
Hubbell Inc
Industrials
|
Held | 10,000 | $4,303,100 | 4.86% |
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.