AVLN · Insider trading · 13F holders · Congress trades
Avalyn Pharmaceuticals Inc (AVLN)
Who is buying and selling AVLN: 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
- 19
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
AVLN at a glance
- No open-market insider purchases or sales of AVLN were filed in the last 90 days.
- 19 13F filers hold AVLN among their 50 largest positions, worth $785.4M combined, including Joseph Edelman and James Flynn. The biggest bets by portfolio weight are SR One Capital Management, LP (10.5%), Catalio Capital Management, LP (10.4%) and Pivotal bioVenture Partners Investment Advisor LLC (10.3%). In their latest 13Fs, 8 managers opened a new position and 0 added to one.
- No member of Congress has disclosed a trade in AVLN.
AVLN insider trading
No open-market insider purchases or sales of AVLN were filed in the last 90 days.
Who owns AVLN? Hedge funds and superinvestors
19 13F filers hold AVLN among their 50 largest positions, worth $785.4M combined, including Joseph Edelman and James Flynn. The biggest bets by portfolio weight are SR One Capital Management, LP (10.5%), Catalio Capital Management, LP (10.4%) and Pivotal bioVenture Partners Investment Advisor LLC (10.3%). In their latest 13Fs, 8 managers opened a new position and 0 added to one.
Superinvestors holding AVLN: Joseph Edelman 1.4% · James Flynn 0.3%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Novo Holdings A/sInvestment manager | 7.4% | $127.8M | 3,883,289 | New | Q2 2026 |
| SR One Capital Management, LPHedge fund | 10.5% | $108.9M | 3,308,649 | New | Q2 2026 |
| Joseph EdelmanHedge fund | 1.4% | $88.1M | 2,675,296 | — | Q2 2026 |
| Montanova Capital, LLCHedge fund | 1.7% | $82.4M | 2,503,109 | — | Q2 2026 |
| Nvp Associates, LLCInvestment manager | 22.8% | $74.7M | 2,268,404 | New | Q2 2026 |
| Catalio Capital Management, LPHedge fund | 10.4% | $55.2M | 1,675,830 | New | Q2 2026 |
| Bellevue Group AGInvestment manager | 0.9% | $44.4M | 1,350,000 | — | Q2 2026 |
| Pivotal bioVenture Partners Investment Advisor LLCVenture capital | 10.3% | $31.8M | 966,792 | New | Q2 2026 |
| Andera PartnersHedge fund | 15.1% | $26.5M | 929,824 | +0.0% shares | Q3 2026 |
| Braidwell LPHedge fund | 1.0% | $26.4M | 801,395 | — | Q2 2026 |
| Tpg Gp A, LLCInvestment manager | 0.5% | $25.4M | 773,069 | — | Q2 2026 |
| James FlynnHedge fund | 0.3% | $24.1M | 731,000 | — | Q2 2026 |
| Rock Springs Capital Management LPHedge fund | 1.1% | $21.8M | 662,918 | — | Q2 2026 |
| Soleus Capital Management, L.P.Hedge fund | 0.5% | $13.8M | 419,000 | — | Q2 2026 |
| Infinitum Asset Management, LLCHedge fund | 1.4% | $13.5M | 411,378 | New | Q2 2026 |
| Silverarc Capital Management, LLCHedge fund | 1.2% | $10.9M | 330,487 | — | Q2 2026 |
| Stempoint Capital LPHedge fund | 0.7% | $3.9M | 118,000 | — | Q2 2026 |
| Acuta Capital Partners, LLCHedge fund | 2.6% | $3.8M | 115,000 | New | Q2 2026 |
| Avidity Partners Management LPHedge fund | 0.3% | $2.0M | 60,000 | New | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 18). Screen AVLN in the grand portfolio →
AVLN stock trades by members of Congress
No member of Congress has disclosed a trade in AVLN.
AVLN questions and answers
Are insiders buying AVLN stock?
No open-market insider purchases or sales of AVLN were filed in the last 90 days.
Which hedge funds own AVLN?
19 13F filers hold AVLN among their 50 largest positions, worth $785.4M combined, including Joseph Edelman and James Flynn. The biggest bets by portfolio weight are SR One Capital Management, LP (10.5%), Catalio Capital Management, LP (10.4%) and Pivotal bioVenture Partners Investment Advisor LLC (10.3%). In their latest 13Fs, 8 managers opened a new position and 0 added to one.
Has Congress traded AVLN?
No member of Congress has disclosed a trade in AVLN.
Who is the largest holder of AVLN?
Among 13F filers, Novo Holdings A/s reports the largest AVLN position, $127.8M (3,883,289 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is SR One Capital Management, LP's: 10.5% of its portfolio.
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