ENTG
Entegris Inc
8 of the 83 super-investors we track hold ENTG, worth a combined $340M per their latest 13F filings. The largest position: William Von Mueffling at 2.7% of their portfolio. This quarter the cohort logged 1 buy and 3 sells on the name. Conviction score: 29 of 100 (how strongly the cohort backs it) — ranked #390 of 742 stocks. The stock is up 11.1x since a tracked investor first held it at conviction size (Q1 2014 or earlier).
Held through it: William Von Mueffling (27q straight), Mairs & Power Funds (18q straight), Henry Ellenbogen (10q straight) and 4 more. All multibaggers the cohort held →
Why super-investors own ENTG
ENTG is held by 8 super-investors in our cohort, with a combined position value of $340M. The highest-conviction owner is William Von Mueffling at 2.7% of their portfolio. Cohort ownership has grown from 6 to 8 over the last four quarters — net interest is rising. This quarter the cohort registered 1 new positions, 2 trimmed, 1 exited.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q3 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (8) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Mairs & Power Funds | 2.1% | 19q | $234M | 1,301,640 |
| 2 | Henry Ellenbogen | 0.5% | 12q | $53M | 293,139 |
| 3 | Stanley Druckenmiller | 0.5% | 4q | $21M | 118,300 |
| 4 | William Von Mueffling | 2.7% | 28q | $18M | 99,756 |
| 5 | Joel Greenblatt | <0.1% | 35q | $8M | 46,784 |
| 6 | Torray Funds | 0.4% | 18q | $3M | 18,001 |
| 7 | First Eagle Investment Management | <0.1% | 16q | $2M | 9,549 |
| 8 | Lee Ainslie | <0.1% | 7q | $864K | 4,801 |
- 1Mairs & Power Fundsport2.1%val$234M1,301,640 sh·19q held
- 2Henry Ellenbogenport0.5%val$53M293,139 sh·12q held
- 3Stanley Druckenmillerport0.5%val$21M118,300 sh·4q held
- 4William Von Muefflingport2.7%val$18M99,756 sh·28q held
- 5Joel Greenblattport<0.1%val$8M46,784 sh·35q held
- 6Torray Fundsport0.4%val$3M18,001 sh·18q held
- 7First Eagle Investment Managementport<0.1%val$2M9,549 sh·16q held
- 8Lee Ainslieport<0.1%val$864K4,801 sh·7q held
Owners of ENTG also hold
Congress is trading ENTG
Congress tracker →- April McClain Delaneybought$1,001 - $15,000 · 2026-07-30
- April McClain Delaneybought$1,001 - $15,000 · 2026-07-08
- April McClain Delaneybought$1,001 - $15,000 · 2026-06-08
- April McClain Delaneybought$1,001 - $15,000 · 2026-06-05
- April McClain Delaneybought$1,001 - $15,000 · 2026-05-21
- April McClain Delaneybought$1,001 - $15,000 · 2026-05-08
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Recent activity (4)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Henry Ellenbogen | TRIM | 0.5% | -70% | $53M | Aug 14, 2026 |
| Stanley Druckenmiller | NEW | 0.5% | +100% | $21M | Aug 14, 2026 |
| Stephen Mandel | EXIT | 2.9% | -100% | $0 | Aug 14, 2026 |
| William Von Mueffling | TRIM | 2.7% | -95% | $18M | Jul 29, 2026 |
Long US equity 13F-HR filings only. CUSIP 29362U104. Not investment advice.