OnterrisONT
13F holders, Q4 2025 (December 31)186holders −1
29new positions
25sold out
8famous investors
$25.18avg. 13F price*
At the end of Q4 2025, 186 institutions reported holding Onterris Inc. (ONT) in their 13F filings, down 1 from Q3 2025. 29 opened new positions and 25 sold out. The largest holders were BlackRock, Inc. ($80.5M), Baron Capital (BAMCO) ($53.6M) and Vanguard Group Inc. ($49.3M). 8 famous investors held it, including Ron Baron (0.1% of Baron Capital (BAMCO)'s portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Ken Fisher (0.0% of Fisher Asset Management's portfolio).
- Company
- Onterris Inc.
- Filed as
- MONTROSE ENVIRONMENTAL GROUP (Q4 2025)
- CUSIP
- 615111101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 29 | $50.1M |
| Exits | 25 | $103.1M |
All 13F filers, Q3 2025 → Q4 2025: 5,022,219 shares bought and 6,146,668 shares sold, net −1,124,449 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 186 holders
| BlackRock, Inc. | 0.00% | Add +1.7% | 3,240,378 | $80.5M |
| Baron Capital (BAMCO) | 0.15% | Add +0.0% | 2,160,599 | $53.6M |
| Vanguard Group Inc. | 0.00% | Add +3.0% | 1,986,620 | $49.3M |
| Goldman Sachs Group Inc. | 0.01% | Add +128.9% | 1,733,003 | $43.0M |
| Nomura Asset Management International Inc. | 0.06% | — | 1,653,379 | $41.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Add +14.1% | 1,457,574 | $36.2M |
| Principal Financial Group Inc. | 0.02% | New | 1,279,714 | $31.8M |
| Fred Alger Management, LLC | 0.10% | Reduce -7.1% | 1,068,555 | $26.5M |
| DekaBank Deutsche Girozentrale | 0.04% | No change | 505,697 | $24.0M |
| Alliancebernstein L.P. | 0.01% | Reduce -9.6% | 893,428 | $22.2M |
| Truist Financial Corp. | 0.03% | Reduce -0.2% | 803,926 | $20.0M |
| Royce & Associates LP | 0.20% | Reduce -10.1% | 787,535 | $19.6M |
| Geode Capital Management, LLC | 0.00% | Add +1.3% | 774,877 | $19.2M |
| Janus Henderson Group PLC | 0.01% | Reduce -4.0% | 763,892 | $19.0M |
| State Street Corp. | 0.00% | Reduce -0.0% | 725,742 | $18.0M |
| Stephens Investment Management Group LLC | 0.23% | Add +6.6% | 704,702 | $17.5M |
| Dimensional Fund Advisors LP | 0.00% | Add +15.0% | 698,089 | $17.3M |
| Legal & General Group Plc | 0.00% | Add +3.7% | 638,630 | $15.9M |
| Summit Creek Advisors LLC | 2.46% | Add +10.6% | 628,786 | $15.6M |
| Algert Global LLC | 0.22% | Add +216.3% | 566,855 | $14.1M |
| Morgan Stanley | 0.00% | Add +15.6% | 559,918 | $13.9M |
| Nuveen, LLC | 0.00% | Reduce -15.4% | 516,952 | $12.8M |
| FMR LLC | 0.00% | Add +3.5% | 452,856 | $11.2M |
| Avalon Trust Co | 0.69% | Add +157.5% | 427,549 | $10.6M |
| Allspring Global Investments Holdings, LLC | 0.02% | New | 408,364 | $10.1M |
| Bank of America Corp. | 0.00% | Reduce -56.7% | 402,596 | $10.0M |
| Silvercrest Asset Management Group LLC | 0.06% | Add +20.2% | 354,434 | $8.8M |
| Fisher Asset Management | 0.00% | Add +36.7% | 352,569 | $8.8M |
| Blair William & Co. | 0.02% | Add +3.6% | 340,869 | $8.5M |
| Northern Trust Corp. | 0.00% | Reduce -6.6% | 326,129 | $8.1M |
| Peregrine Capital Management LLC | 0.21% | Reduce -1.3% | 280,171 | $7.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.5% | 274,477 | $6.8M |
| ArrowMark Colorado Holdings LLC | 0.15% | Reduce -2.9% | 269,413 | $6.7M |
| AQR Capital Management | 0.00% | Add +26.4% | 215,738 | $5.4M |
| Granahan Investment Management, LLC | 0.21% | Add +119.7% | 199,317 | $4.9M |
| Russell Investments Group, Ltd. | 0.01% | Add +6.7% | 198,017 | $4.9M |
| Trexquant Investment LP | 0.04% | Reduce -15.8% | 174,541 | $4.3M |
| Citadel Advisors | 0.00% | Reduce -26.8% | 172,754 | $4.3M |
| Invesco Ltd. | 0.00% | Add +17.6% | 170,650 | $4.2M |
| Tudor Investment Corporation | 0.02% | Add +16.4% | 168,699 | $4.2M |
| Global Alpha Capital Management Ltd. | 0.22% | Reduce -18.2% | 143,382 | $3.6M |
| Panagora Asset Management Inc. | 0.01% | Add +27.5% | 130,693 | $3.2M |
| Rockefeller Capital Management L.P. | 0.01% | Reduce -3.6% | 127,935 | $3.2M |
| BNP Paribas Financial Markets | 0.00% | Add +163.5% | 117,792 | $2.9M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +63.3% | 116,415 | $2.9M |
| CenterBook Partners LP | 0.13% | Add +17.6% | 110,820 | $2.8M |
| Essex Investment Management Co. LLC | 0.41% | Reduce -2.2% | 109,513 | $2.7M |
| Marshall Wace, LLP | 0.00% | Reduce -60.7% | 109,058 | $2.7M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Add +25.5% | 102,382 | $2.5M |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.4% | 101,323 | $2.5M |
| Sei Investments Co. | 0.00% | Add +32.8% | 95,921 | $2.4M |
| Barclays PLC | 0.00% | Add +47.8% | 73,486 | $1.8M |
| OP Asset Management Ltd | 0.02% | Reduce -10.2% | 72,716 | $1.8M |
| Jane Street Group, LLC | 0.00% | Reduce -82.1% | 72,363 | $1.8M |
| Wells Fargo & Company | 0.00% | Add +18.8% | 72,054 | $1.8M |
| Millennium Management | 0.00% | Reduce -70.6% | 71,586 | $1.8M |
| Conestoga Capital Advisors, LLC | 0.03% | Add +2.6% | 71,475 | $1.8M |
| Swiss National Bank | 0.00% | Add +4.9% | 66,100 | $1.6M |
| UBS Group AG | 0.00% | Reduce -79.8% | 63,244 | $1.6M |
| Engineers Gate Manager LP | 0.02% | Add +28.0% | 59,682 | $1.5M |
| Cladis Investment Advisory, LLC | 0.79% | Reduce -5.7% | 58,400 | $1.5M |
| Nordea Investment Management AB | 0.00% | New | 55,879 | $1.4M |
| Creative Planning | 0.00% | Add +7.3% | 55,346 | $1.4M |
| Rhumbline Advisers | 0.00% | Reduce -12.7% | 49,843 | $1.2M |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.08% | Add +19.5% | 49,443 | $1.2M |
| Holcombe Financial, Inc. | 0.74% | No change | 47,651 | $1.2M |
| Dark Forest Capital Management LP | 0.05% | Add +7.8% | 45,187 | $1.1M |
| Squarepoint Ops LLC | 0.00% | Reduce -56.1% | 44,461 | $1.1M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -19.5% | 42,359 | $1.1M |
| Hussman Strategic Advisors, Inc. | 0.25% | New | 42,000 | $1.0M |
| Mariner, LLC | 0.00% | Add +112.7% | 41,697 | $1.0M |
| Y-Intercept (Hong Kong) Ltd | 0.02% | New | 36,079 | $896K |
| Legato Capital Management LLC | 0.08% | Reduce -38.8% | 35,151 | $873K |
| Franklin Resources Inc. | 0.00% | Reduce -4.3% | 33,672 | $836K |
| Harbor Capital Advisors, Inc. | 0.06% | Add +100.5% | 33,311 | $827K |
| Royal Bank of Canada | 0.00% | Reduce -52.1% | 30,978 | $770K |
| Ieq Capital, LLC | 0.00% | Add +35.2% | 30,358 | $754K |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 30,062 | $746K |
| Canada Pension Plan Investment Board | 0.00% | Add +189.2% | 29,500 | $732K |
| Managed Asset Portfolios, LLC | 0.09% | Add +1.5% | 29,027 | $721K |
| Deutsche Bank AG | 0.00% | Add +6.8% | 28,877 | $717K |
| Stifel Financial Corp. | 0.00% | Reduce -4.1% | 28,132 | $699K |
| Gotham Asset Management | 0.00% | New | 27,719 | $688K |
| Pinnacle Financial Partners, Inc. | 0.01% | — | 27,333 | $679K |
| Natixis Advisors, LLC | 0.00% | Reduce -2.3% | 26,345 | $654K |
| T. Rowe Price Associates Inc. | 0.00% | Add +4.7% | 25,787 | $641K |
| AlphaQuest LLC | 0.04% | Reduce -0.1% | 25,703 | $638K |
| Verition Fund Management LLC | 0.00% | Reduce -14.0% | 25,500 | $633K |
| Qube Research & Technologies Ltd | 0.00% | New | 24,536 | $609K |
| Horrell Capital Management, Inc. | 0.26% | Reduce -3.4% | 24,330 | $604K |
| MASTERINVEST Kapitalanlage GmbH | 0.06% | Reduce -2.9% | 22,822 | $584K |
| Scotia Capital Inc. | 0.00% | Reduce -25.0% | 23,153 | $575K |
| SG Americas Securities, LLC | 0.00% | Reduce -44.3% | 22,980 | $571K |
| Versor Investments LP | 0.09% | Add +69.8% | 22,750 | $565K |
| Virtus Advisers, LLC | 0.24% | New | 20,100 | $499K |
| MetLife Investment Management, LLC | 0.00% | No change | 18,975 | $471K |
| JPMorgan Chase & Co. | 0.00% | Add +4.3% | 16,629 | $413K |
| Los Angeles Capital Management LLC | 0.00% | Add +83.2% | 15,785 | $410K |
| Quantedge Capital Pte Ltd | 0.19% | Add +74.5% | 16,400 | $407K |
| Graham Capital Management, L.P. | 0.02% | Add +9.2% | 16,342 | $406K |
"% of holder's portfolio" is ONT's weight in each manager's 13F, not the share of Onterris Inc. the manager owns.