RNA · Insider trading · 13F holders · Congress trades
Atrium Therapeutics, Inc. (RNA)
Who is buying and selling RNA: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 14
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
RNA at a glance
- No open-market insider purchases or sales of RNA were filed in the last 90 days.
- 14 13F filers hold RNA among their 50 largest positions, worth $54.7M combined. The biggest bets by portfolio weight are Crcm LP (5.7%), Arbiter Partners Capital Management LLC (1.9%) and Creek Drive Management Group LLC (1.1%). In their latest 13Fs, 1 manager opened a new position and 5 added to one.
- No member of Congress has disclosed a trade in RNA.
RNA insider trading
No open-market insider purchases or sales of RNA were filed in the last 90 days.
Who owns RNA? Hedge funds and superinvestors
14 13F filers hold RNA among their 50 largest positions, worth $54.7M combined. The biggest bets by portfolio weight are Crcm LP (5.7%), Arbiter Partners Capital Management LLC (1.9%) and Creek Drive Management Group LLC (1.1%). In their latest 13Fs, 1 manager opened a new position and 5 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Sessa Capital IM, L.P.Hedge fund | 0.3% | $20.2M | 1,500,000 | +172.0% shares | Q2 2026 |
| Crcm LPHedge fund | 5.7% | $8.6M | 641,539 | New | Q2 2026 |
| TIG Advisors, LLCHedge fund | 0.3% | $7.6M | 561,533 | -7.6% shares | Q2 2026 |
| Arbiter Partners Capital Management LLCHedge fund | 1.9% | $3.5M | 261,288 | +13.6% shares | Q2 2026 |
| Slotnik Capital, LLCHedge fund | 0.9% | $3.2M | 237,637 | +31.3% shares | Q2 2026 |
| Nexpoint Asset Management, L.P.Mutual fund manager | 0.1% | $2.0M | 150,025 | +0.0% shares | Q2 2026 |
| Bracebridge Capital, LLCHedge fund | 0.4% | $1.9M | 139,239 | +0.0% shares | Q2 2026 |
| Yakira Capital Management, Inc.Hedge fund | 0.5% | $1.8M | 133,047 | +5.1% shares | Q2 2026 |
| Creek Drive Management Group LLCHedge fund | 1.1% | $1.7M | 127,600 | +6.3% shares | Q2 2026 |
| Athos Capital LtdHedge fund | 0.5% | $1.5M | 107,965 | +0.0% shares | Q2 2026 |
| Marble Bar Asset Management LLPHedge fund | 1.0% | $1.4M | 103,849 | -29.4% shares | Q2 2026 |
| Alethea Capital Management, LLCWealth manager | 0.2% | $589K | 43,758 | +0.0% shares | Q2 2026 |
| Trium Capital LLPHedge fund | 0.6% | $483K | 58,382 | -48.5% shares | Q3 2026 |
| Twin Securities, Inc.Hedge fund | 0.2% | $357K | 26,517 | -46.9% shares | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 13). Screen RNA in the grand portfolio →
RNA stock trades by members of Congress
No member of Congress has disclosed a trade in RNA.
RNA questions and answers
Are insiders buying RNA stock?
No open-market insider purchases or sales of RNA were filed in the last 90 days.
Which hedge funds own RNA?
14 13F filers hold RNA among their 50 largest positions, worth $54.7M combined. The biggest bets by portfolio weight are Crcm LP (5.7%), Arbiter Partners Capital Management LLC (1.9%) and Creek Drive Management Group LLC (1.1%). In their latest 13Fs, 1 manager opened a new position and 5 added to one.
Has Congress traded RNA?
No member of Congress has disclosed a trade in RNA.
Who is the largest holder of RNA?
Among 13F filers, Sessa Capital IM, L.P. reports the largest RNA position, $20.2M (1,500,000 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Crcm LP's: 5.7% of its portfolio.
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