Atrium TherapeuticsRNA

13F holders, Q1 2026 (March 31)
163holders
5famous investors
$13.37avg. 13F price*

At the end of Q1 2026, 163 institutions reported holding Atrium Therapeutics Inc. (RNA) in their 13F filings. The largest holders were T. Rowe Price Associates Inc. ($20.8M), BlackRock, Inc. ($16.1M) and Ra Capital Management, L.P. ($11.6M). 5 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).

Company
Atrium Therapeutics Inc.
CUSIP
04965N104
Latest filing quarter
Q2 2026

History

Number of 13F holders

050100150200 Q1 2026: 163Q1 2026Q2 2026: 154Q2 2026

Total Exit/New Position Q1 2026

InstitutionsTotal Value
New Positions158$176.3M
Exits0$0

Ownership 163 holders

T. Rowe Price Associates Inc. 0.00% New 1,553,210 $20.8M
BlackRock, Inc. 0.00% New 1,205,291 $16.1M
Ra Capital Management, L.P. 0.12% New 864,102 $11.6M
Vanguard Capital Management LLC 0.00% — 626,869 $8.4M
TIG Advisors, LLC 0.39% New 607,552 $8.1M
Pentwater Capital Management LP 0.06% New 602,649 $8.1M
O'Connor Alternative Investments LLC 0.44% — 578,011 $7.7M
Sessa Capital IM, L.P. 0.14% New 551,391 $7.4M
Goldman Sachs Group Inc. 0.00% New 349,950 $4.7M
Farallon Capital Management, L.L.C. 0.03% New 349,360 $4.7M
Vanguard Portfolio Management LLC 0.00% — 344,369 $4.6M
Geode Capital Management, LLC 0.00% New 319,831 $4.3M
683 Capital Management, LLC 0.39% New 300,000 $4.0M
Bellevue Group AG 0.08% New 263,096 $3.5M
State Street Corp. 0.00% New 257,086 $3.4M
Weiss Asset Management LP 0.08% New 240,701 $3.2M
Cantor Fitzgerald, L. P. 0.11% New 235,637 $3.2M
Balyasny Asset Management L.P. 0.01% New 235,115 $3.1M
Squarepoint Ops LLC 0.01% New 231,466 $3.1M
Arbiter Partners Capital Management LLC 2.09% New 230,000 $3.1M
Millennium Management 0.00% New 190,859 $2.6M
Adage Capital Partners Gp, L.L.C. 0.00% New 183,580 $2.5M
Slotnik Capital, LLC 0.72% New 180,945 $2.4M
AQR Arbitrage LLC 0.05% New 179,713 $2.4M
Two Sigma Investments, LP 0.00% New 178,560 $2.4M
Morgan Stanley 0.00% New 165,036 $2.2M
Schonfeld Strategic Advisors LLC 0.02% New 162,759 $2.2M
Nexpoint Asset Management, L.P. 0.14% New 150,025 $2.0M
Marble Bar Asset Management LLP 1.93% New 147,000 $2.0M
Janus Henderson Group PLC 0.00% New 139,973 $1.9M
Bracebridge Capital, LLC 0.34% New 139,239 $1.9M
Nomura Holdings Inc. 0.02% New 137,380 $1.8M
Bank of America Corp. 0.00% New 136,248 $1.8M
Yakira Capital Management, Inc. 0.50% New 126,645 $1.7M
Creek Drive Management Group LLC 1.01% New 120,000 $1.6M
Charles Schwab Investment Management Inc. 0.00% New 116,598 $1.6M
TD Asset Management Inc 0.00% New 111,200 $1.5M
Citadel Advisors 0.00% New 109,936 $1.5M
Athos Capital Ltd 0.45% New 107,965 $1.4M
Caption Management, LLC 0.07% New 103,592 $1.4M
Northern Trust Corp. 0.00% New 98,585 $1.3M
Vanguard Fiduciary Trust Co. 0.00% — 95,128 $1.3M
FIL Ltd 0.00% New 78,500 $1.0M
ExodusPoint Capital Management, LP 0.01% New 77,442 $1.0M
Tudor Investment Corporation 0.01% New 71,359 $954K
Polar Asset Management Partners Inc. 0.03% New 70,000 $936K
Neuberger Berman Group LLC 0.00% New 69,294 $926K
Quarry LP 0.18% New 66,651 $891K
Manufacturers Life Insurance Company, The 0.00% New 62,379 $834K
ADAR1 Capital Management, LLC 0.05% New 57,688 $771K
Westchester Capital Management, LLC 0.04% New 55,236 $739K
AWM Investment Company, Inc. 0.07% New 50,000 $669K
Twin Securities, Inc. 0.33% New 49,913 $667K
UBS Group AG 0.00% New 49,814 $666K
Oddo BHF Asset Management Sas 0.02% New 45,090 $603K
Caxton Associates LLP 0.01% New 44,230 $591K
Alethea Capital Management, LLC 0.31% New 43,758 $585K
Bank of New York Mellon Corp 0.00% New 43,697 $584K
Canada Pension Plan Investment Board 0.00% New 41,970 $561K
Highbridge Capital Management LLC 0.05% New 40,986 $555K
Saba Capital Management, L.P. 0.02% New 39,640 $530K
Fifth Lane Capital, LP 0.59% New 35,999 $481K
Royal Bank of Canada 0.00% New 35,698 $477K
Kennedy Capital Management LLC 0.01% New 33,977 $454K
Marshall Wace, LLP 0.00% New 33,691 $450K
LMR Partners LLP 0.01% New 32,500 $435K
Brevan Howard Capital Management LP 0.00% New 31,644 $423K
Groupe la Francaise 0.01% New 29,698 $397K
FMR LLC 0.00% New 29,292 $392K
Woodline Partners LP 0.00% New 28,845 $386K
Nuveen, LLC 0.00% New 25,307 $338K
Cannon Global Investment Management, LLC 0.82% New 25,087 $335K
Credit Industriel Et Commercial 0.05% New 23,000 $308K
Point72 Asset Management 0.00% New 22,708 $304K
Fortress Investment Group LLC 0.08% New 22,033 $295K
Healthcare of Ontario Pension Plan Trust Fund 0.00% New 20,590 $275K
Fractal Investments LLC 0.03% New 20,000 $267K
Jane Street Group, LLC 0.00% New 19,955 $267K
Vestcor Inc 0.01% New 17,499 $234K
GMO 0.00% New 15,444 $206K
Rhumbline Advisers 0.00% New 14,953 $200K
AlphaCentric Advisors LLC 0.18% New 13,286 $178K
Susquehanna Portfolio Strategies, LLC 0.00% New 13,110 $175K
Alliancebernstein L.P. 0.00% New 12,970 $173K
Public Sector Pension Investment Board 0.00% New 12,882 $172K
Quantinno Capital Management LP 0.00% New 12,454 $167K
JPMorgan Chase & Co. 0.00% New 12,038 $163K
AlphaGrep UK Ltd 0.05% New 11,870 $159K
Wells Fargo & Company 0.00% New 11,416 $153K
Susquehanna International Group, LLP 0.00% New 11,343 $152K
Magnetar Financial LLC 0.00% New 10,512 $141K
Invesco Ltd. 0.00% New 10,193 $136K
Deutsche Bank AG 0.00% New 10,019 $134K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% New 9,488 $127K
MetLife Investment Management, LLC 0.00% New 8,845 $118K
BNP Paribas Financial Markets 0.00% New 8,267 $111K
Centiva Capital, LP 0.00% New 5,895 $79K
Legal & General Group Plc 0.00% New 5,657 $76K
Vanguard Global Advisers, LLC 0.00% — 5,585 $75K
Russell Investments Group, Ltd. 0.00% New 3,839 $51K

"% of holder's portfolio" is RNA's weight in each manager's 13F, not the share of Atrium Therapeutics Inc. the manager owns.

Show all 163 holders