OnterrisONT
13F holders, Q1 2026 (March 31)171holders −15
18new positions
36sold out
7famous investors
$21.98avg. 13F price*
At the end of Q1 2026, 171 institutions reported holding Onterris Inc. (ONT) in their 13F filings, down 15 from Q4 2025. 18 opened new positions and 36 sold out. The largest holders were BlackRock, Inc. ($69.0M), Baron Capital (BAMCO) ($47.5M) and Goldman Sachs Group Inc. ($42.9M). 7 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 Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Onterris Inc.
- Filed as
- MONTROSE ENVIRONMENTAL GROUP (Q1 2026)
- CUSIP
- 615111101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 18 | $31.5M |
| Exits | 36 | $21.6M |
All 13F filers, Q4 2025 → Q1 2026: 3,915,635 shares bought and 2,933,700 shares sold, net +981,935 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 171 holders
| BlackRock, Inc. | 0.00% | Reduce -2.8% | 3,150,760 | $69.0M |
| Baron Capital (BAMCO) | 0.14% | Add +0.3% | 2,168,183 | $47.5M |
| Goldman Sachs Group Inc. | 0.01% | Add +13.1% | 1,960,610 | $42.9M |
| Nomura Asset Management International Inc. | 0.06% | Reduce -7.4% | 1,531,641 | $33.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Add +4.0% | 1,515,671 | $33.2M |
| Vanguard Capital Management LLC | 0.00% | — | 1,436,165 | $31.4M |
| Principal Financial Group Inc. | 0.02% | Add +5.2% | 1,346,257 | $29.5M |
| Alliancebernstein L.P. | 0.01% | Add +26.6% | 1,130,913 | $28.1M |
| Royce & Associates LP | 0.21% | Add +21.2% | 954,776 | $20.9M |
| Amundi | 0.01% | New | 880,032 | $19.2M |
| Janus Henderson Group PLC | 0.01% | Add +13.5% | 867,042 | $19.0M |
| Dimensional Fund Advisors LP | 0.00% | Add +23.0% | 858,856 | $18.8M |
| Geode Capital Management, LLC | 0.00% | Add +3.7% | 803,732 | $17.6M |
| Truist Financial Corp. | 0.02% | Reduce -1.1% | 795,313 | $17.4M |
| Legal & General Group Plc | 0.00% | Add +18.0% | 753,684 | $16.5M |
| State Street Corp. | 0.00% | Add +0.4% | 728,450 | $15.9M |
| Stephens Investment Management Group LLC | 0.21% | Reduce -1.4% | 694,980 | $15.2M |
| Algert Global LLC | 0.20% | Add +5.7% | 599,025 | $13.1M |
| FMR LLC | 0.00% | Add +25.5% | 568,373 | $12.4M |
| Summit Creek Advisors LLC | 2.30% | Reduce -18.7% | 511,160 | $11.2M |
| Morgan Stanley | 0.00% | Reduce -9.1% | 508,809 | $11.1M |
| DekaBank Deutsche Girozentrale | 0.02% | No change | 505,697 | $11.0M |
| Avalon Trust Co | 0.66% | Add +2.1% | 436,494 | $9.6M |
| Allspring Global Investments Holdings, LLC | 0.01% | Reduce -3.5% | 393,908 | $8.6M |
| Fred Alger Management, LLC | 0.04% | Reduce -63.7% | 387,994 | $8.5M |
| Bank of America Corp. | 0.00% | Reduce -7.4% | 372,637 | $8.2M |
| Fisher Asset Management | 0.00% | No change | 352,569 | $7.7M |
| Northern Trust Corp. | 0.00% | Add +4.7% | 341,298 | $7.5M |
| Millennium Management | 0.01% | Add +334.7% | 311,166 | $6.8M |
| Vanguard Portfolio Management LLC | 0.00% | — | 283,521 | $6.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.5% | 273,043 | $6.0M |
| Nuveen, LLC | 0.00% | Reduce -47.3% | 272,364 | $6.0M |
| Peregrine Capital Management LLC | 0.22% | Reduce -4.1% | 268,781 | $5.9M |
| Blair William & Co. | 0.02% | Reduce -21.7% | 266,980 | $5.8M |
| Granahan Investment Management, LLC | 0.26% | Add +21.3% | 241,787 | $5.3M |
| Citadel Advisors | 0.00% | Add +28.9% | 222,587 | $4.9M |
| UBS Group AG | 0.00% | Add +250.7% | 221,778 | $4.9M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 212,109 | $4.6M |
| Russell Investments Group, Ltd. | 0.00% | Add +1.7% | 201,464 | $4.4M |
| Invesco Ltd. | 0.00% | Add +6.4% | 181,500 | $4.0M |
| Tudor Investment Corporation | 0.02% | Reduce -0.0% | 168,671 | $3.7M |
| Citigroup Inc. | 0.00% | Add +9006.6% | 156,451 | $3.4M |
| OP Asset Management Ltd | 0.03% | Add +114.8% | 156,157 | $3.4M |
| Sei Investments Co. | 0.00% | Add +60.9% | 154,308 | $3.4M |
| BNP Paribas Financial Markets | 0.00% | Add +27.7% | 150,373 | $3.3M |
| Jane Street Group, LLC | 0.00% | Add +100.9% | 145,401 | $3.2M |
| Global Alpha Capital Management Ltd. | 0.19% | Reduce -0.3% | 142,996 | $3.1M |
| CenterBook Partners LP | 0.17% | Add +26.8% | 140,508 | $3.1M |
| ArrowMark Colorado Holdings LLC | 0.08% | Reduce -48.1% | 139,928 | $3.1M |
| Mackenzie Financial Corp. | 0.00% | New | 134,451 | $2.9M |
| Panagora Asset Management Inc. | 0.01% | Add +2.7% | 134,177 | $2.9M |
| Rockefeller Capital Management L.P. | 0.01% | Add +0.2% | 128,188 | $2.8M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +2.1% | 118,912 | $2.6M |
| Essex Investment Management Co. LLC | 0.39% | Add +1.8% | 111,473 | $2.4M |
| AQR Capital Management | 0.00% | Reduce -48.5% | 111,074 | $2.4M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Add +5.0% | 107,481 | $2.4M |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.9% | 99,448 | $2.2M |
| Conestoga Capital Advisors, LLC | 0.04% | Add +16.9% | 83,515 | $1.8M |
| Raiffeisen Bank International AG | 0.03% | New | 86,668 | $1.8M |
| Nordea Investment Management AB | 0.00% | Add +40.7% | 78,642 | $1.7M |
| Qube Research & Technologies Ltd | 0.00% | Add +183.3% | 69,504 | $1.5M |
| Swiss National Bank | 0.00% | No change | 66,100 | $1.4M |
| Gsa Capital Partners LLP | 0.08% | New | 59,455 | $1.3M |
| Wells Fargo & Company | 0.00% | Reduce -22.4% | 55,934 | $1.2M |
| HRT Financial LP | 0.00% | New | 54,565 | $1.2M |
| Creative Planning | 0.00% | Reduce -1.9% | 54,323 | $1.2M |
| ExodusPoint Capital Management, LP | 0.01% | New | 53,532 | $1.2M |
| Cladis Investment Advisory, LLC | 0.64% | Reduce -9.4% | 52,900 | $1.2M |
| Trexquant Investment LP | 0.01% | Reduce -70.7% | 51,192 | $1.1M |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.08% | Add +0.2% | 49,543 | $1.1M |
| Congress Asset Management Co. | 0.01% | New | 49,516 | $1.1M |
| Holcombe Financial, Inc. | 0.61% | No change | 47,651 | $1.0M |
| Mariner, LLC | 0.00% | Reduce -6.2% | 39,101 | $856K |
| Harbor Capital Advisors, Inc. | 0.07% | Add +14.8% | 38,240 | $837K |
| XTX Topco Ltd | 0.01% | Add +136.5% | 36,762 | $805K |
| Squarepoint Ops LLC | 0.00% | Reduce -17.9% | 36,485 | $799K |
| Man Group plc | 0.00% | New | 34,801 | $762K |
| Legato Capital Management LLC | 0.07% | Reduce -1.4% | 34,668 | $759K |
| Deutsche Bank AG | 0.00% | Add +13.0% | 32,631 | $714K |
| Franklin Resources Inc. | 0.00% | Reduce -7.4% | 31,193 | $683K |
| T. Rowe Price Associates Inc. | 0.00% | Add +19.2% | 30,727 | $673K |
| California State Teachers Retirement System | 0.00% | Reduce -0.8% | 29,816 | $653K |
| Managed Asset Portfolios, LLC | 0.08% | Add +2.3% | 29,703 | $650K |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 29,017 | $635K |
| Virtus Advisers, LLC | 0.29% | Add +41.9% | 28,518 | $624K |
| Royal Bank of Canada | 0.00% | Reduce -8.3% | 28,422 | $623K |
| Pinnacle Financial Partners, Inc. | 0.00% | No change | 27,333 | $598K |
| Engineers Gate Manager LP | 0.01% | Reduce -55.2% | 26,731 | $585K |
| Stifel Financial Corp. | 0.00% | Reduce -13.9% | 24,231 | $530K |
| Gotham Asset Management | 0.00% | Reduce -18.8% | 22,518 | $493K |
| SG Americas Securities, LLC | 0.00% | Reduce -2.2% | 22,471 | $492K |
| Horrell Capital Management, Inc. | 0.22% | Reduce -8.2% | 22,337 | $489K |
| Envestnet Asset Management Inc. | 0.00% | Reduce -48.1% | 21,966 | $481K |
| Numerai GP LLC | 0.05% | Add +111.5% | 21,656 | $474K |
| Ieq Capital, LLC | 0.00% | Reduce -32.8% | 20,405 | $447K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 19,875 | $435K |
| MetLife Investment Management, LLC | 0.00% | No change | 18,975 | $415K |
| Jupiter Asset Management Ltd. | 0.00% | Add +25.4% | 18,029 | $395K |
| Dark Forest Capital Management LP | 0.03% | Reduce -61.2% | 17,544 | $384K |
| Natixis Advisors, LLC | 0.00% | Reduce -37.9% | 16,351 | $358K |
| Venture Visionary Partners LLC | 0.01% | No change | 16,176 | $354K |
| JPMorgan Chase & Co. | 0.00% | Add +0.6% | 16,730 | $351K |
| Jones Financial Companies LLLP | 0.00% | Add +42852.6% | 16,322 | $345K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +0.8% | 15,498 | $339K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -48.1% | 15,300 | $335K |
| HSBC Holdings PLC | 0.00% | Add +41.9% | 15,228 | $328K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 14,860 | $325K |
| First Trust Advisors LP | 0.00% | New | 14,385 | $315K |
| Vanguard Global Advisers, LLC | 0.00% | — | 13,072 | $286K |
| Quantinno Capital Management LP | 0.00% | New | 12,327 | $270K |
| Groupe la Francaise | 0.00% | Reduce -7.7% | 12,000 | $262K |
| Intech Investment Management LLC | 0.00% | Reduce -15.3% | 11,844 | $259K |
| Hillsdale Investment Management Inc. | 0.01% | Add +3733.3% | 11,500 | $252K |
| Triumph Capital Management | 0.05% | No change | 11,209 | $245K |
| Susquehanna International Group, LLP | 0.00% | New | 10,882 | $238K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 10,415 | $228K |
| Radnor Capital Management, LLC | 0.03% | Reduce -2.4% | 9,975 | $218K |
| New York State Common Retirement Fund | 0.00% | No change | 9,838 | $215K |
| Kozak & Associates, Inc. | 0.04% | No change | 10,000 | $215K |
| State of Wyoming | 0.02% | New | 9,296 | $203K |
| Arizona State Retirement System | 0.00% | Reduce -0.8% | 9,230 | $202K |
| Fifth Third Bancorp | 0.00% | New | 9,199 | $201K |
| Vanguard Investments Australia, Ltd. | 0.00% | — | 9,155 | $200K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 9,014 | $197K |
| Barclays PLC | 0.00% | Reduce -89.2% | 7,975 | $175K |
| KLP Kapitalforvaltning As | 0.00% | No change | 7,000 | $153K |
| Los Angeles Capital Management LLC | 0.00% | Reduce -58.4% | 6,565 | $144K |
| Cwm, LLC | 0.00% | Reduce -25.6% | 6,193 | $136K |
| Avanza Fonder AB | 0.00% | No change | 4,700 | $103K |
| Assetmark, Inc. | 0.00% | Add +24.1% | 4,216 | $92K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -16.6% | 4,009 | $88K |
| Simplex Trading, LLC | 0.00% | New | 3,373 | $74K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +274.1% | 3,199 | $70K |
| Dixon Mitchell Investment Counsel Inc. | 0.00% | No change | 3,033 | $66K |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 2,909 | $64K |
| Exchange Traded Concepts, LLC | 0.00% | Reduce -34.9% | 2,771 | $61K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 2,677 | $59K |
| Larson Financial Group LLC | 0.00% | Add +10.8% | 2,239 | $49K |
| Innovative Asset Advisors Group, LLC | 0.03% | — | 2,000 | $44K |
| Osaic Holdings, Inc. | 0.00% | Reduce -1.3% | 1,815 | $40K |
| US Bancorp \de | 0.00% | Add +3.7% | 1,215 | $27K |
| Advisory Services Network, LLC | 0.00% | New | 1,164 | $25K |
| Sterling Capital Management LLC | 0.00% | Reduce -42.2% | 1,101 | $24K |
| Wilmington Savings Fund Society, FSB | 0.00% | Reduce -41.8% | 1,060 | $23K |
| KBC Group NV | 0.00% | New | 1,050 | $23K |
| Leonteq Securities AG | 0.00% | No change | 860 | $19K |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -3.7% | 833 | $18K |
| First Horizon Corp. | 0.00% | Reduce -22.8% | 703 | $15K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -7.1% | 642 | $14K |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | No change | 600 | $13K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | Add +18.2% | 539 | $12K |
| Essential Partners LLC | 0.00% | Add +26.8% | 450 | $10K |
| Versant Capital Management, Inc | 0.00% | Add +46.9% | 376 | $8K |
| GAMMA Investing LLC | 0.00% | Add +3.9% | 291 | $6K |
| SBI Securities Co., Ltd. | 0.00% | Add +20000.0% | 201 | $4K |
| IFP Advisors, Inc | 0.00% | Reduce -48.8% | 164 | $4K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 159 | $3K |
| Allworth Financial LP | 0.00% | Reduce -16.9% | 157 | $3K |
| Brown Brothers Harriman & Co. | 0.00% | Add +8.6% | 127 | $3K |
| Signaturefd, LLC | 0.00% | No change | 117 | $3K |
| MAI Capital Management | 0.00% | Add +660.0% | 114 | $2K |
| Parallel Advisors, LLC | 0.00% | No change | 113 | $2K |
| Smartleaf Asset Management LLC | 0.00% | No change | 93 | $2K |
| Rothschild Investment LLC | 0.00% | Reduce -20.6% | 81 | $2K |
| Arax Advisory Partners | 0.00% | Add +820.0% | 46 | $1K |
| True Wealth Design, LLC | 0.00% | Reduce -53.3% | 14 | $307 |
| Sunbelt Securities, Inc. | 0.00% | No change | 14 | $306 |
| SJS Investment Consulting Inc. | 0.00% | Reduce -50.0% | 3 | $66 |
| Root Financial Partners, LLC | 0.00% | No change | 3 | $66 |
| Hughes Financial Services, LLC | 0.00% | New | 3 | $66 |
| Covestor Ltd | 0.00% | No change | 5 | $0 |
"% of holder's portfolio" is ONT's weight in each manager's 13F, not the share of Onterris Inc. the manager owns.