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Who owns Atrium Therapeutics (RNA) stock

136 funds reported Atrium Therapeutics (RNA) shares in their latest 13F filings, worth $196M in all. The largest holder is Sessa Capital IM, L.P. ($20.2M). Last quarter 71 funds added to their stakes and 77 cut them.

Largest holders of RNA (13F)Largest holders of RNA (13F)Sessa Capital IM, L.P.$20.2MPrice T Rowe Associates$19.8MBlackRock$19.5MCrcm LP$17.3MArbiter Partners Capital Manageme…$10.5MVanguard Capital Management LLC$9.8MTIG Advisors, LLC$7.6MGeode Capital Management, LLC$5.2MTwo Sigma Investments, LP$4.6MGoldman Sachs Group$4.2M

Largest holders (13F)

FundSharesValueChangeQuarter
Sessa Capital IM, L.P.1,500,000$20.2Mincrease2026-06-30
Price T Rowe Associates1,472,984$19.8Mdecrease2026-06-30
BlackRock1,447,476$19.5Mincrease2026-06-30
Crcm LP1,283,078$17.3Mnew2026-06-30
Arbiter Partners Capital Management LLC783,864$10.5Mincrease2026-06-30
Vanguard Capital Management LLC730,831$9.8Mincrease2026-06-30
TIG Advisors, LLC561,533$7.6Mdecrease2026-06-30
Geode Capital Management, LLC386,929$5.2Mincrease2026-06-30
Two Sigma Investments, LP345,481$4.6Mincrease2026-06-30
Goldman Sachs Group310,341$4.2Mdecrease2026-06-30
683 Capital Management, LLC300,000$4.0Munchanged2026-06-30
State Street271,762$3.7Mincrease2026-06-30
Slotnik Capital, LLC237,637$3.2Mincrease2026-06-30
Weiss Asset Management LP219,730$3.0Mdecrease2026-06-30
Millennium Management LLC200,559$2.7Mincrease2026-06-30

Atrium Therapeutics' latest quarter

Atrium Therapeutics, Q2 2026: revenue $3.0M (-22% year over year), operating margin -752.9%, net loss $20.2M, operating cash flow −$3.9M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most RNA stock?

By the latest 13F filings: Sessa Capital IM, L.P. ($20.2M); Price T Rowe Associates ($19.8M); BlackRock ($19.5M); Crcm LP ($17.3M); Arbiter Partners Capital Management LLC ($10.5M).

What is the short interest in RNA?

3,726,302 shares were sold short at the 2026-10-15 settlement, 9.73% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.