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RNA · Atrium Therapeutics, Inc.

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$11.57 +0.03 (+0.26%) At close · Jul 27
Market Cap
$196.54M
Shares
17.11M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 170
Total Value: $212,767,006
Total Shares: 15,912,058
Showing 1–100 of 178 holdings by value · page 1 of 2

Institutional Ownership Trend

2 quarters

Holder Concentration

Across 163 13F filers
Top Holder
9.9%
of institutional value
Top 5
33.7%
of institutional value
Top 10
50.8%
of institutional value
HHI
360
Broadly held
Showing 100 of 178
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega PRICE T ROWE ASSOCIATES INC /MD/ $20,766,417 9.76% 1,553,210
Mega BlackRock, Inc. $16,114,735 7.57% 1,205,291
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $13,621,356 6.40% 1,018,800
Mid RA CAPITAL MANAGEMENT, L.P. $11,553,043 5.43% 864,102
Mega VANGUARD CAPITAL MANAGEMENT LLC $8,381,238 3.94% 626,869
Mid TIG Advisors, LLC $8,122,970 3.82% 607,552
Large Pentwater Capital Management LP $8,057,417 3.79% 602,649
Mid O'Connor Alternative Investments LLC $7,728,007 3.63% 578,011
Mid Sessa Capital IM, L.P. $7,372,097 3.46% 551,391
Mega GOLDMAN SACHS GROUP INC $4,678,831 2.20% 349,950
Large FARALLON CAPITAL MANAGEMENT LLC $4,670,943 2.20% 349,360
Mega GEODE CAPITAL MANAGEMENT, LLC $4,276,140 2.01% 319,831
Mid 683 Capital Management, LLC $4,011,000 1.89% 300,000
Mid Bellevue Group AG $3,517,593 1.65% 263,096
Mega STATE STREET CORP $3,437,239 1.62% 257,086
Mid Weiss Asset Management LP $3,218,172 1.51% 240,701
Mid CANTOR FITZGERALD, L. P. $3,150,466 1.48% 235,637
Large Balyasny Asset Management L.P. $3,143,487 1.48% 235,115
Large Squarepoint Ops LLC $3,094,700 1.45% 231,466
Small Arbiter Partners Capital Management LLC $3,075,100 1.45% 230,000
Mega MILLENNIUM MANAGEMENT LLC $2,551,784 1.20% 190,859
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $2,454,464 1.15% 183,580
Small Slotnik Capital, LLC $2,419,234 1.14% 180,945
Mid AQR Arbitrage LLC $2,402,762 1.13% 179,713
Mega TWO SIGMA INVESTMENTS, LP $2,387,347 1.12% 178,560
Mega MORGAN STANLEY $2,206,529 1.04% 165,036
Large Schonfeld Strategic Advisors LLC $2,176,087 1.02% 162,759
Mid NEXPOINT ASSET MANAGEMENT, L.P. $2,005,833 0.94% 150,025
Micro Marble Bar Asset Management LLP $1,965,390 0.92% 147,000
Mega JANUS HENDERSON GROUP PLC $1,871,438 0.88% 139,973
Small Bracebridge Capital, LLC $1,861,625 0.87% 139,239
Large NOMURA HOLDINGS INC $1,836,770 0.86% 137,380
Mega BANK OF AMERICA CORP /DE/ Bank $1,821,634 0.86% 136,248
Small Yakira Capital Management, Inc. $1,693,243 0.80% 126,645
Small Creek Drive Management Group LLC $1,604,400 0.75% 120,000
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $1,558,915 0.73% 116,598
Mid Trium Capital LLP $1,523,589 0.72% 113,278
Mega TD Asset Management Inc $1,486,744 0.70% 111,200
Mega CITADEL ADVISORS LLC $1,469,844 0.69% 109,936
Small Athos Capital Ltd $1,443,492 0.68% 107,965
Large Caption Management, LLC $1,385,025 0.65% 103,592
Mega NORTHERN TRUST CORP Bank $1,318,080 0.62% 98,585
Mega VANGUARD FIDUCIARY TRUST CO Bank $1,271,861 0.60% 95,128
Small CREDIT INDUSTRIEL ET COMMERCIAL $1,206,774 0.57% 89,723
Mega FIL Ltd $1,049,545 0.49% 78,500
Large ExodusPoint Capital Management, LP $1,035,399 0.49% 77,442
Large TUDOR INVESTMENT CORP ET AL $954,069 0.45% 71,359
Mid Polar Asset Management Partners Inc. $935,900 0.44% 70,000
Mega NEUBERGER BERMAN GROUP LLC $926,460 0.44% 69,294
Small Quarry LP $891,123 0.42% 66,651
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $834,007 0.39% 62,379
Large Caption Management, LLC $812,896 0.38% 60,800
Mid ADAR1 Capital Management, LLC $771,288 0.36% 57,688
Mid Westchester Capital Management, LLC $738,504 0.35% 55,236
Small AWM Investment Company, Inc. $668,500 0.31% 50,000
Large Centiva Capital, LP $668,500 0.31% 50,000
Small Twin Securities, Inc. Broker-Dealer $667,336 0.31% 49,913
Mega UBS Group AG $666,012 0.31% 49,814
Mid ODDO BHF ASSET MANAGEMENT SAS $602,853 0.28% 45,090
Mid CAXTON ASSOCIATES LLP $591,355 0.28% 44,230
Small ALETHEA CAPITAL MANAGEMENT, LLC $585,044 0.27% 43,758
Mega Bank of New York Mellon Corp Bank $584,226 0.27% 43,697
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $561,138 0.26% 41,970
Small HIGHBRIDGE CAPITAL MANAGEMENT LLC $547,982 0.26% 40,986
Large Caption Management, LLC $534,800 0.25% 40,000
Mid Saba Capital Management, L.P. $529,986 0.25% 39,640
Micro FIFTH LANE CAPITAL, LP $481,306 0.23% 35,999
Mega ROYAL BANK OF CANADA Bank $477,281 0.22% 35,698
Mid Y-Intercept (Hong Kong) Ltd $472,135 0.22% 35,103
Mid KENNEDY CAPITAL MANAGEMENT LLC $454,272 0.21% 33,977
Large MARSHALL WACE, LLP $450,448 0.21% 33,691
Large LMR Partners LLP $434,525 0.20% 32,500
Mid Brevan Howard Capital Management LP $423,080 0.20% 31,644
Mid Groupe la Francaise $397,062 0.19% 29,698
Mega FMR LLC $391,633 0.18% 29,292
Large Woodline Partners LP $385,657 0.18% 28,845
Mega Nuveen, LLC $338,353 0.16% 25,307
Micro Cannon Global Investment Management, LLC $335,413 0.16% 25,087
Large Point72 Asset Management, L.P. $303,605 0.14% 22,708
Small Fortress Investment Group LLC $294,581 0.14% 22,033
Large Walleye Trading LLC $288,792 0.14% 21,600
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $275,288 0.13% 20,590
Small Fractal Investments LLC $269,000 0.13% 20,000
Mega JANE STREET GROUP, LLC $266,798 0.13% 19,955
Mid Vestcor Inc $233,961 0.11% 17,499
Large Grantham, Mayo, Van Otterloo & Co. LLC $206,486 0.10% 15,444
Mega RHUMBLINE ADVISERS $199,921 0.09% 14,953
Micro AlphaCentric Advisors LLC $181,279 0.09% 13,478
Mid Susquehanna Portfolio Strategies, LLC $175,280 0.08% 13,110
Mega ALLIANCEBERNSTEIN L.P. $173,408 0.08% 12,970
Large Public Sector Pension Investment Board Pension $172,232 0.08% 12,882
Large Quantinno Capital Management LP $166,509 0.08% 12,454
Mega JPMORGAN CHASE & CO $160,947 0.08% 12,038
Mega WELLS FARGO & COMPANY/MN $152,630 0.07% 11,416
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $151,655 0.07% 11,343
Mid Magnetar Financial LLC $140,545 0.07% 10,512
Large ExodusPoint Capital Management, LP $140,385 0.07% 10,500
Mega Invesco Ltd. $136,279 0.06% 10,193
Mega DEUTSCHE BANK AG\ Bank $133,953 0.06% 10,019
Small Corsicana & Co. $132,079 0.06% 9,820
Key facts CIK 2093101 CUSIP 04965N104 13F (30d) 21 filings 21 filers Visit website Investor relations

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