Atrium Therapeutics, Inc.
RNA- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0002093101
No open-market purchases or sales by Atrium Therapeutics, Inc. insiders were filed in the last 90 days; 154 institutions reported holding it in 13F filings for Q2 2026, worth $192.8M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Atrium Therapeutics, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 154
- −7 vs. Q1 2026
- Shares held
- 14.3M
- −362.1K (−2.5%) vs. Q1 2026
- Total value
- $192.8M
- −$3.70M (−1.9%) vs. Q1 2026
- New holders
- 39
- 47 more added
- Sold out
- 46
- 35 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting RNA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 154 | $192.8M |
| Q1 2026 | 163 | $198.3M |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Atrium Therapeutics, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Centerpoint Advisors, LLC | 5 | $0 | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 43 | $0 | 0.00% | +43 | New |
| Truvestments Capital LLC | 1 | $13 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 2 | $27 | 0.00% | −74−97.4% | Reduced |
| Torren Management, LLC | 4 | $54 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 5 | $67 | 0.00% | −53−91.4% | Reduced |
| JPL Wealth Management, LLC | 6 | $81 | 0.00% | +6 | New |
| SJS Investment Consulting Inc. | 9 | $122 | 0.00% | +9 | New |
| Pinnacle Wealth Planning Services, Inc. | 10 | $135 | 0.00% | −24−70.6% | Reduced |
| Clearstead Advisors, LLC | 11 | $149 | 0.00% | +11 | New |
| US Bancorp | 13 | $175 | 0.00% | −284−95.6% | Reduced |
| Danske Bank A/S | 21 | $282 | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 21 | $282 | 0.00% | +21 | New |
| Smartleaf Asset Management LLC | 25 | $341 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 29 | $383 | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 39 | $525 | 0.00% | −103−72.5% | Reduced |
| Bogart Wealth, LLC | 39 | $525 | 0.00% | +39 | New |
| Wealth Enhancement Trust Services, Inc. | 40 | $538 | 0.00% | +40 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 49 | $659 | 0.00% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 50 | $673 | 0.00% | +50 | New |
| Basecamp Wealth Advisors LLC | 56 | $753 | 0.00% | −293−84.0% | Reduced |
| TD Private Client Wealth LLC | 74 | $995 | 0.00% | +74 | New |
| Private Wealth Management Group, LLC | 75 | $1.01K | 0.00% | +75 | New |
| Nisa Investment Advisors, LLC | 77 | $1.03K | 0.00% | −307−79.9% | Reduced |
| Longfellow Investment Management Co LLC | 107 | $1.44K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 120 | $1.62K | 0.00% | +120 | New |
| Sterling Capital Management LLC | 125 | $1.68K | 0.00% | +25+25.0% | Added |
| AdvisorNet Financial, Inc | 139 | $1.87K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 162 | $2.18K | 0.00% | +143+752.6% | Added |
| California State Teachers Retirement System | 171 | $2.30K | 0.00% | +171 | New |
| GAMMA Investing LLC | 195 | $2.62K | 0.00% | −140−41.8% | Reduced |
| True Wealth Design, LLC | 213 | $2.87K | 0.00% | +212+21,200.0% | Added |
| FNY Investment Advisers, LLC | 260 | $3.00K | 0.00% | +260 | New |
| EverSource Wealth Advisors, LLC | 230 | $3.09K | 0.00% | +226+5,650.0% | Added |
| Versant Capital Management, Inc | 265 | $3.56K | 0.00% | +265 | New |
| Allworth Financial LP | 281 | $3.78K | 0.00% | +227+420.4% | Added |
| Essential Partners LLC | 288 | $3.87K | 0.00% | +288 | New |
| Eurizon Capital SGR S.p.A. | 287 | $3.92K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 466 | $6.00K | 0.00% | +453+3,484.6% | Added |
| PenderFund Capital Management Ltd. | 490 | $6.59K | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 531 | $7.14K | 0.00% | +528+17,600.0% | Added |
| The PNC Financial Services Group, Inc. | 594 | $7.99K | 0.00% | −349−37.0% | Reduced |
| Royal Bank of Canada | 600 | $8.00K | 0.00% | −35,098−98.3% | Reduced |
| UBS Asset Management Americas Inc | 612 | $8.23K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 635 | $8.54K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 950 | $12.8K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 1,422 | $19.1K | 0.00% | −4,235−74.9% | Reduced |
| Tower Research Capital LLC (TRC) | 1,716 | $23.1K | 0.00% | −1,044−37.8% | Reduced |
| STRS Ohio | 2,600 | $35.0K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 2,699 | $35.8K | 0.00% | +604+28.8% | Added |
| New York State Common Retirement Fund | 2,749 | $37.0K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 3,128 | $42.1K | 0.00% | +3,128 | New |
| Police & Firemen's Retirement System of New Jersey | 3,175 | $42.7K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 3,575 | $48.1K | 0.00% | −107−2.9% | Reduced |
| Quantbot Technologies LP | 3,614 | $48.6K | 0.00% | +3,614 | New |
| Erste Asset Management GmbH | 3,600 | $49.1K | 0.00% | 00.0% | Unchanged |
| Walleye Trading LLC | 3,978 | $53.5K | 0.00% | +350+9.6% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 4,400 | $59.2K | 0.00% | +4,400 | New |
| Russell Investments Group, Ltd. | 4,475 | $60.2K | 0.00% | +636+16.6% | Added |
| Vanguard Global Advisers, LLC | 5,585 | $75.1K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 6,602 | $88.8K | 0.00% | −2,886−30.4% | Reduced |
| Citigroup Inc | 6,685 | $89.9K | 0.00% | +6,047+947.8% | Added |
| BNP Paribas Arbitrage, SA | 7,901 | $106.3K | 0.00% | −366−4.4% | Reduced |
| JPMorgan Chase & Co | 9,388 | $128.1K | 0.00% | −2,650−22.0% | Reduced |
| Corsicana & Co. | 9,820 | $132.1K | 0.06% | +9,820 | New |
| MetLife Investment Management | 10,283 | $138.3K | 0.00% | +1,438+16.3% | Added |
| Kestra Private Wealth Services, LLC | 10,370 | $139.5K | 0.00% | +10,370 | New |
| Axq Capital, LP | 11,377 | $153.0K | 0.02% | +11,377 | New |
| AlphaCentric Advisors LLC | 13,478 | $181.3K | 0.15% | +192+1.4% | Added |
| Jupiter Topco LLC | 13,833 | $185.6K | 0.00% | +13,833 | New |
| Invesco Ltd. | 14,174 | $190.6K | 0.00% | +3,981+39.1% | Added |
| Deutsche Bank AG | 14,967 | $201.3K | 0.00% | +4,948+49.4% | Added |
| Renaissance Technologies LLC | 14,971 | $201.4K | 0.00% | +14,971 | New |
| Bluefin Capital Management, LLC | 16,011 | $215.3K | 0.06% | +16,011 | New |
| Rhumbline Advisers | 16,579 | $223.0K | 0.00% | +1,626+10.9% | Added |
| Alliancebernstein L.P. | 17,110 | $228.8K | 0.00% | +4,140+31.9% | Added |
| Wells Fargo & Company | 17,451 | $234.7K | 0.00% | +6,035+52.9% | Added |
| Vestcor Inc | 17,499 | $235.0K | 0.01% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 18,590 | $250.0K | 0.00% | −2,000−9.7% | Reduced |
| UBS Group AG | 19,572 | $263.2K | 0.00% | −30,242−60.7% | Reduced |
| Fractal Investments LLC | 20,000 | $269.0K | 0.03% | 00.0% | Unchanged |
| Brevan Howard Capital Management LP | 20,834 | $280.2K | 0.00% | −10,810−34.2% | Reduced |
| Odyssean, LLC | 21,233 | $285.6K | 0.05% | +21,233 | New |
| Twin Securities, Inc. | 26,517 | $356.7K | 0.18% | −23,396−46.9% | Reduced |
| Quantinno Capital Management LP | 27,418 | $368.8K | 0.00% | +14,964+120.2% | Added |
| Jump Financial, LLC | 31,017 | $417.2K | 0.00% | +31,017 | New |
| Nuveen, LLC | 31,071 | $417.9K | 0.00% | +5,764+22.8% | Added |
| Los Angeles Capital Management LLC | 31,477 | $423.4K | 0.00% | +31,477 | New |
| LMR Partners LLP | 32,500 | $437.1K | 0.00% | 00.0% | Unchanged |
| Boussard & Gavaudan Gestion SAS | 32,845 | $447.2K | 0.02% | +32,845 | New |
| Moran Wealth Management, LLC | 33,320 | $448.2K | 0.01% | +33,320 | New |
| FMR LLC | 33,532 | $451.0K | 0.00% | +4,240+14.5% | Added |
| Kennedy Capital Management, Inc. | 34,979 | $470.5K | 0.01% | +1,002+2.9% | Added |
| Y-Intercept (Hong Kong) Ltd | 35,103 | $472.1K | 0.01% | +35,103 | New |
| Bank of New York Mellon Corp | 39,252 | $527.9K | 0.00% | −4,445−10.2% | Reduced |
| Saba Capital Management, L.P. | 39,640 | $533.2K | 0.02% | 00.0% | Unchanged |
| Morgan Stanley | 41,942 | $564.1K | 0.00% | −123,094−74.6% | Reduced |
| Canada Pension Plan Investment Board | 41,970 | $564.5K | 0.00% | 00.0% | Unchanged |
| Alethea Capital Management, LLC | 43,758 | $588.5K | 0.24% | 00.0% | Unchanged |
| Caxton Associates LLP | 44,230 | $594.9K | 0.01% | 00.0% | Unchanged |