OnterrisONT
13F holders, Q3 2025 (September 30)187holders +25
42new positions
16sold out
8famous investors
$27.46avg. 13F price*
At the end of Q3 2025, 187 institutions reported holding Onterris Inc. (ONT) in their 13F filings, up 25 from Q2 2025. 42 opened new positions and 16 sold out. The largest holders were BlackRock, Inc. ($87.5M), Baron Capital (BAMCO) ($59.3M) and Vanguard Group Inc. ($53.0M). 8 famous investors held it, including Ron Baron (0.2% of Baron Capital (BAMCO)'s portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Onterris Inc.
- Filed as
- MONTROSE ENVIRONMENTAL GROUP (Q3 2025)
- CUSIP
- 615111101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 42 | $26.8M |
| Exits | 16 | $8.6M |
All 13F filers, Q2 2025 → Q3 2025: 3,485,690 shares bought and 5,044,487 shares sold, net −1,558,797 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 187 holders
| BlackRock, Inc. | 0.00% | Add +11.1% | 3,186,718 | $87.5M |
| Baron Capital (BAMCO) | 0.16% | Reduce -21.9% | 2,160,463 | $59.3M |
| Vanguard Group Inc. | 0.00% | Add +2.6% | 1,929,183 | $53.0M |
| Macquarie Group Ltd. | 0.06% | Reduce -6.2% | 1,844,632 | $50.7M |
| William Blair Investment Management, LLC | 0.09% | Reduce -43.5% | 1,310,251 | $36.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Reduce -27.3% | 1,277,719 | $35.1M |
| Fred Alger Management, LLC | 0.12% | Reduce -0.1% | 1,149,696 | $31.6M |
| Alliancebernstein L.P. | 0.01% | Reduce -23.0% | 987,987 | $27.1M |
| Bank of America Corp. | 0.00% | Reduce -17.2% | 930,612 | $25.6M |
| Royce & Associates LP | 0.24% | Reduce -15.4% | 875,499 | $24.0M |
| Truist Financial Corp. | 0.03% | Reduce -0.3% | 805,813 | $22.1M |
| Janus Henderson Group PLC | 0.01% | Reduce -2.2% | 795,732 | $21.9M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.0% | 764,885 | $21.0M |
| Goldman Sachs Group Inc. | 0.00% | Add +163.4% | 757,233 | $20.8M |
| State Street Corp. | 0.00% | Add +1.3% | 726,006 | $19.9M |
| Stephens Investment Management Group LLC | 0.24% | Add +0.6% | 660,928 | $18.1M |
| Legal & General Group Plc | 0.00% | Reduce -31.9% | 615,919 | $16.9M |
| Nuveen, LLC | 0.00% | Reduce -12.9% | 610,892 | $16.8M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -11.5% | 607,090 | $16.7M |
| Summit Creek Advisors LLC | 2.28% | Reduce -9.3% | 568,549 | $15.6M |
| DekaBank Deutsche Girozentrale | 0.02% | No change | 505,697 | $13.9M |
| Morgan Stanley | 0.00% | Add +106.6% | 484,499 | $13.3M |
| FMR LLC | 0.00% | Add +46.3% | 437,553 | $12.0M |
| Jane Street Group, LLC | 0.01% | Add +729.6% | 403,378 | $11.1M |
| Northern Trust Corp. | 0.00% | Add +0.8% | 349,075 | $9.6M |
| Blair William & Co. | 0.02% | Reduce -6.0% | 328,976 | $9.0M |
| UBS Group AG | 0.00% | Reduce -38.4% | 313,388 | $8.6M |
| Silvercrest Asset Management Group LLC | 0.05% | Reduce -2.8% | 294,773 | $8.1M |
| Peregrine Capital Management LLC | 0.23% | Add +16.6% | 283,899 | $7.8M |
| Marshall Wace, LLP | 0.01% | Reduce -27.6% | 277,706 | $7.6M |
| ArrowMark Colorado Holdings LLC | 0.14% | Add +0.3% | 277,430 | $7.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +2.6% | 273,257 | $7.5M |
| Fisher Asset Management | 0.00% | Add +18.0% | 257,872 | $7.1M |
| Millennium Management | 0.01% | Reduce -69.3% | 243,863 | $6.7M |
| Citadel Advisors | 0.01% | Add +31.0% | 235,981 | $6.5M |
| Trexquant Investment LP | 0.06% | Add +36.6% | 207,418 | $5.7M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -7.7% | 185,605 | $5.1M |
| Algert Global LLC | 0.08% | Add +351.8% | 179,188 | $4.9M |
| Global Alpha Capital Management Ltd. | 0.28% | Add +7.5% | 175,282 | $4.8M |
| AQR Capital Management | 0.00% | Add +69.8% | 170,722 | $4.7M |
| Avalon Trust Co | 0.30% | Add +1.0% | 166,062 | $4.6M |
| Invesco Ltd. | 0.00% | Reduce -4.6% | 145,132 | $4.0M |
| Tudor Investment Corporation | 0.03% | New | 144,897 | $4.0M |
| Cubist Systematic Strategies, LLC | 0.05% | Add +29.3% | 133,848 | $3.7M |
| Rockefeller Capital Management L.P. | 0.01% | Add +4.0% | 132,672 | $3.6M |
| Essex Investment Management Co. LLC | 0.47% | Add +3.3% | 111,954 | $3.1M |
| Bank of New York Mellon Corp | 0.00% | Add +2.6% | 102,721 | $2.8M |
| Panagora Asset Management Inc. | 0.01% | New | 102,495 | $2.8M |
| Lisanti Capital Growth, LLC | 0.69% | New | 102,082 | $2.8M |
| Squarepoint Ops LLC | 0.01% | Add +229.1% | 101,330 | $2.8M |
| CenterBook Partners LP | 0.13% | New | 94,209 | $2.6M |
| Granahan Investment Management, LLC | 0.10% | New | 90,740 | $2.5M |
| Citigroup Inc. | 0.00% | Reduce -10.3% | 90,458 | $2.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Add +54.1% | 81,564 | $2.2M |
| OP Asset Management Ltd | 0.03% | Add +41.0% | 80,976 | $2.2M |
| ExodusPoint Capital Management, LP | 0.03% | Add +326.4% | 79,821 | $2.2M |
| Sei Investments Co. | 0.00% | Add +8.5% | 72,206 | $2.0M |
| Granite Investment Partners, LLC | 0.11% | Reduce -13.3% | 71,687 | $2.0M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +53.5% | 71,291 | $2.0M |
| Conestoga Capital Advisors, LLC | 0.03% | Reduce -20.9% | 69,680 | $1.9M |
| Gsa Capital Partners LLP | 0.15% | Add +160.6% | 66,732 | $1.8M |
| Royal Bank of Canada | 0.00% | Reduce -45.5% | 64,735 | $1.8M |
| Swiss National Bank | 0.00% | Add +5.3% | 63,000 | $1.7M |
| Cladis Investment Advisory, LLC | 0.97% | Reduce -13.1% | 61,900 | $1.7M |
| Van Eck Associates Corp. | 0.00% | Reduce -16.5% | 61,513 | $1.7M |
| Wells Fargo & Company | 0.00% | Reduce -8.9% | 60,673 | $1.7M |
| Legato Capital Management LLC | 0.17% | Add +78.6% | 57,473 | $1.6M |
| Rhumbline Advisers | 0.00% | Reduce -1.1% | 57,062 | $1.6M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -5.4% | 52,629 | $1.4M |
| Creative Planning | 0.00% | Add +4.3% | 51,586 | $1.4M |
| Point72 Asset Management | 0.00% | Add +31.5% | 49,800 | $1.4M |
| Barclays PLC | 0.00% | Reduce -18.9% | 49,705 | $1.4M |
| Holcombe Financial, Inc. | 0.91% | No change | 47,651 | $1.3M |
| Engineers Gate Manager LP | 0.01% | New | 46,627 | $1.3M |
| BNP Paribas Financial Markets | 0.00% | Add +236.7% | 44,708 | $1.2M |
| Dark Forest Capital Management LP | 0.04% | New | 41,916 | $1.2M |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.08% | Add +31.1% | 41,370 | $1.1M |
| SG Americas Securities, LLC | 0.00% | New | 41,250 | $1.1M |
| Aquatic Capital Management LLC | 0.02% | Add +342.3% | 38,711 | $1.1M |
| Franklin Resources Inc. | 0.00% | Add +53.4% | 35,185 | $966K |
| Scotia Capital Inc. | 0.00% | New | 30,853 | $847K |
| California State Teachers Retirement System | 0.00% | Add +7.2% | 30,049 | $825K |
| Verition Fund Management LLC | 0.00% | Reduce -43.1% | 29,646 | $814K |
| Stifel Financial Corp. | 0.00% | Reduce -2.4% | 29,335 | $806K |
| Managed Asset Portfolios, LLC | 0.10% | Add +33.6% | 28,605 | $785K |
| Synovus Financial Corp. | 0.01% | No change | 27,233 | $748K |
| Deutsche Bank AG | 0.00% | Add +36.5% | 27,047 | $743K |
| Natixis Advisors, LLC | 0.00% | Add +4.3% | 26,962 | $740K |
| AlphaQuest LLC | 0.05% | Add +435.2% | 25,737 | $707K |
| Horrell Capital Management, Inc. | 0.29% | Reduce -8.2% | 25,182 | $691K |
| T. Rowe Price Associates Inc. | 0.00% | Add +6.5% | 24,620 | $677K |
| MASTERINVEST Kapitalanlage GmbH | 0.06% | Reduce -27.0% | 23,512 | $646K |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 22,660 | $627K |
| Ieq Capital, LLC | 0.00% | Add +33.4% | 22,451 | $617K |
| Fox Run Management, L.L.C. | 0.09% | New | 20,937 | $575K |
| Semanteon Capital Management, LP | 0.71% | New | 20,694 | $568K |
| Ameriprise Financial Inc. | 0.00% | Reduce -18.6% | 20,542 | $564K |
| Mariner, LLC | 0.00% | Add +11.4% | 19,607 | $538K |
| MetLife Investment Management, LLC | 0.00% | Reduce -8.2% | 18,975 | $521K |
| Comerica Bank | 0.00% | Reduce -3.5% | 18,303 | $503K |
"% of holder's portfolio" is ONT's weight in each manager's 13F, not the share of Onterris Inc. the manager owns.