Sionna Therapeutics, Inc.
SION- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0002036042
In the last 90 days, Sionna Therapeutics, Inc. insiders filed 0 open-market purchases and 4 sales; 146 institutions reported holding it in 13F filings for Q2 2026, worth $2.11B in total; Viking Global Investors is the only superinvestor holding it.
13F holders, Q2 2025
Institutional positions in Sionna Therapeutics, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 65
- +18 vs. Q1 2025
- Shares held
- 43.4M
- +1.96M (+4.7%) vs. Q1 2025
- Total value
- $753.8M
- +$319.8M (+73.7%) vs. Q1 2025
- New holders
- 26
- 18 more added
- Sold out
- 8
- 10 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SION on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 146 | $2.11B |
| Q1 2026 | 122 | $1.82B |
| Q4 2025 | 101 | $1.81B |
| Q3 2025 | 78 | $1.26B |
| Q2 2025 | 65 | $753.8M |
| Q1 2025 | 47 | $434.1M |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Sionna Therapeutics, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sterling Capital Management LLC | 30 | $521 | 0.00% | +30 | New |
| Hughes Financial Services, LLC | 44 | $747 | 0.00% | +44 | New |
| Royal Bank of Canada | 60 | $1.00K | 0.00% | −558−90.3% | Reduced |
| Amalgamated Bank | 421 | $7.00K | 0.00% | +421 | New |
| California State Teachers Retirement System | 770 | $13.4K | 0.00% | +770 | New |
| Ameritas Investment Partners, Inc. | 1,259 | $21.8K | 0.00% | +1,259 | New |
| Legal & General Group Plc | 1,374 | $23.8K | 0.00% | +1,374 | New |
| BNP Paribas Arbitrage, SA | 1,761 | $30.6K | 0.00% | +1,761 | New |
| STRS Ohio | 2,300 | $39.9K | 0.00% | +2,300 | New |
| Police & Firemen's Retirement System of New Jersey | 2,608 | $45.2K | 0.00% | +2,608 | New |
| Citigroup Inc | 4,380 | $76.0K | 0.00% | +4,380 | New |
| Virtus Investment Advisers, Inc. | 5,535 | $96.0K | 0.03% | +5,535 | New |
| Bank of America Corp | 6,012 | $104.3K | 0.00% | −2,727−31.2% | Reduced |
| Wells Fargo & Company | 6,374 | $110.6K | 0.00% | +6,374 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 6,747 | $117.1K | 0.00% | +6,747 | New |
| New York State Common Retirement Fund | 6,800 | $118.0K | 0.00% | +6,800 | New |
| MetLife Investment Management | 8,033 | $139.4K | 0.00% | +8,033 | New |
| Deutsche Bank AG | 9,596 | $166.5K | 0.00% | +9,596 | New |
| Commonwealth Equity Services, LLC | 14,017 | $243.0K | 0.00% | +14,017 | New |
| Millennium Management LLC | 14,034 | $243.5K | 0.00% | −165,038−92.2% | Reduced |
| Susquehanna International Group, LLP | 14,834 | $257.4K | 0.00% | +14,834 | New |
| Nuveen, LLC | 16,040 | $278.3K | 0.00% | +16,040 | New |
| Polen Capital Management LLC | 16,975 | $294.5K | 0.00% | +16,975 | New |
| Options Solutions, LLC | 16,975 | $294.5K | 0.11% | +16,975 | New |
| Rhumbline Advisers | 17,670 | $306.6K | 0.00% | +17,670 | New |
| Barclays PLC | 23,022 | $399.4K | 0.00% | +23,022 | New |
| Bank of New York Mellon Corp | 24,131 | $418.7K | 0.00% | +24,131 | New |
| Renaissance Technologies LLC | 26,000 | $451.1K | 0.00% | +26,000 | New |
| Manufacturers Life Insurance Company, The | 38,038 | $660.0K | 0.00% | +4,489+13.4% | Added |
| Morgan Stanley | 44,018 | $763.7K | 0.00% | +40,079+1,017.5% | Added |
| Goldman Sachs Group Inc | 46,048 | $798.9K | 0.00% | −17,693−27.8% | Reduced |
| TD Asset Management Inc | 49,966 | $866.9K | 0.00% | −5,400−9.8% | Reduced |
| Holocene Advisors, LP | 50,000 | $867.5K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 51,367 | $891.2K | 0.00% | +40,221+360.9% | Added |
| Woodline Partners LP | 80,000 | $1.39M | 0.01% | 00.0% | Unchanged |
| Driehaus Capital Management LLC | 83,850 | $1.45M | 0.01% | −245,039−74.5% | Reduced |
| Northern Trust Corp | 91,890 | $1.59M | 0.00% | +65,068+242.6% | Added |
| Charles Schwab Investment Management Inc | 92,832 | $1.61M | 0.00% | +28,188+43.6% | Added |
| Rock Springs Capital Management LP | 99,429 | $1.73M | 0.11% | 00.0% | Unchanged |
| State Street Corp | 124,518 | $2.16M | 0.00% | +110,118+764.7% | Added |
| Citadel Advisors LLC | 129,912 | $2.25M | 0.00% | −196,588−60.2% | Reduced |
| Prudential Financial Inc | 135,185 | $2.35M | 0.00% | +72,185+114.6% | Added |
| Silverarc Capital Management, LLC | 186,015 | $3.23M | 0.66% | +71,877+63.0% | Added |
| Alyeska Investment Group, L.P. | 186,222 | $3.23M | 0.01% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 236,813 | $4.11M | 0.00% | +27,547+13.2% | Added |
| Geode Capital Management, LLC | 289,275 | $5.02M | 0.00% | +153,712+113.4% | Added |
| Siren, L.L.C. | 325,000 | $5.64M | 0.29% | 00.0% | Unchanged |
| Soleus Capital Management, L.P. | 376,000 | $6.52M | 0.45% | +136,000+56.7% | Added |
| Baker Bros. Advisors LP | 400,000 | $6.94M | 0.07% | 00.0% | Unchanged |
| Franklin Resources Inc | 500,023 | $8.68M | 0.00% | 00.0% | Unchanged |
| Vanguard Group Inc | 630,351 | $10.9M | 0.00% | +84,184+15.4% | Added |
| BlackRock, Inc. | 637,104 | $11.1M | 0.00% | +438,708+221.1% | Added |
| Jennison Associates LLC | 752,800 | $13.1M | 0.01% | −107,127−12.5% | Reduced |
| Price T Rowe Associates Inc | 861,238 | $14.9M | 0.00% | −134,974−13.5% | Reduced |
| Standard Life Aberdeen plc | 950,547 | $16.5M | 0.03% | +204,583+27.4% | Added |
| Deerfield Management Company, L.P. (Series C) | 970,590 | $16.8M | 0.31% | +223,590+29.9% | Added |
| Braidwell LP | 1,081,855 | $18.8M | 0.64% | +1,081,855 | New |
| Perceptive Advisors LLC | 1,216,045 | $21.1M | 0.79% | −35,056−2.8% | Reduced |
| JPMorgan Chase & Co | 2,221,188 | $38.5M | 0.00% | +51,589+2.4% | Added |
| Enavate Sciences GP, LLC | 2,478,030 | $43.0M | 24.35% | 00.0% | Unchanged |
| Viking Global Investors LPSuperinvestorViking Global Investors | 3,195,181 | $55.4M | 0.16% | +242,427+8.2% | Added |
| Atlas Venture Life Science Advisors, LLC | 3,694,020 | $64.1M | 9.68% | 00.0% | Unchanged |
| OrbiMed Advisors LLC | 3,704,959 | $64.3M | 1.62% | 00.0% | Unchanged |
| TPG GP A, LLC | 6,744,962 | $117.0M | 6.24% | +60,000+0.9% | Added |
| Ra Capital Management, L.P. | 10,445,322 | $181.2M | 3.05% | 00.0% | Unchanged |
| Zimmer Partners, LP | 0 | $0 | 0.00% | −237,500−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −114,284−100.0% | Sold out |
| StemPoint Capital LP | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −33,964−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −14,757−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −13,060−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −12,188−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −11,715−100.0% | Sold out |