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, Q3 2025
Institutional positions in Sionna Therapeutics, Inc. as of Sep 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
- 78
- +13 vs. Q2 2025
- Shares held
- 42.8M
- −607.8K (−1.4%) vs. Q2 2025
- Total value
- $1.26B
- +$506.1M (+67.1%) vs. Q2 2025
- New holders
- 19
- 20 more added
- Sold out
- 6
- 19 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Sionna Therapeutics, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| The PNC Financial Services Group, Inc. | 5 | $147 | 0.00% | +5 | New |
| EverSource Wealth Advisors, LLC | 20 | $588 | 0.00% | +20 | New |
| Allworth Financial LP | 22 | $648 | 0.00% | +22 | New |
| Sterling Capital Management LLC | 30 | $882 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 44 | $1.57K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 60 | $2.00K | 0.00% | +60 | New |
| SRS Capital Advisors, Inc. | 92 | $2.71K | 0.00% | +92 | New |
| US Bancorp | 111 | $3.27K | 0.00% | +111 | New |
| Federated Hermes, Inc. | 113 | $3.32K | 0.00% | +113 | New |
| GAMMA Investing LLC | 153 | $4.50K | 0.00% | +153 | New |
| FMR LLC | 234 | $6.88K | 0.00% | +234 | New |
| Royal Bank of Canada | 378 | $11.0K | 0.00% | +318+530.0% | Added |
| Amalgamated Bank | 421 | $12.0K | 0.00% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 409 | $12.0K | 0.01% | +409 | New |
| Citigroup Inc | 687 | $20.2K | 0.00% | −3,693−84.3% | Reduced |
| California State Teachers Retirement System | 771 | $22.7K | 0.00% | +1+0.1% | Added |
| Russell Investments Group, Ltd. | 1,022 | $30.1K | 0.00% | +1,022 | New |
| Ameritas Investment Partners, Inc. | 1,259 | $37.0K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 2,380 | $70.0K | 0.00% | +619+35.2% | Added |
| Police & Firemen's Retirement System of New Jersey | 3,234 | $95.1K | 0.00% | +626+24.0% | Added |
| Tower Research Capital LLC (TRC) | 4,490 | $132.1K | 0.00% | +4,490 | New |
| China Universal Asset Management Co., Ltd. | 5,000 | $147.1K | 0.01% | +5,000 | New |
| New York State Common Retirement Fund | 5,300 | $155.9K | 0.00% | −1,500−22.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 5,643 | $166.0K | 0.00% | −1,104−16.4% | Reduced |
| Bank of America Corp | 6,541 | $192.4K | 0.00% | +529+8.8% | Added |
| Virtus Investment Advisers, Inc. | 6,698 | $197.0K | 0.06% | +1,163+21.0% | Added |
| Legal & General Group Plc | 7,374 | $217.2K | 0.00% | +6,000+436.7% | Added |
| Intech Investment Management LLC | 7,486 | $220.2K | 0.00% | +7,486 | New |
| Wells Fargo & Company | 7,576 | $222.8K | 0.00% | +1,202+18.9% | Added |
| MetLife Investment Management | 8,033 | $236.3K | 0.00% | 00.0% | Unchanged |
| Jain Global LLC | 8,513 | $250.4K | 0.00% | +8,513 | New |
| Deutsche Bank AG | 9,596 | $282.2K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 10,162 | $298.9K | 0.00% | +10,162 | New |
| Goldman Sachs Group Inc | 12,178 | $358.2K | 0.00% | −33,870−73.6% | Reduced |
| Renaissance Technologies LLC | 14,600 | $429.4K | 0.00% | −11,400−43.8% | Reduced |
| Nuveen, LLC | 16,040 | $471.7K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 17,240 | $507.0K | 0.00% | −430−2.4% | Reduced |
| Barclays PLC | 17,643 | $518.9K | 0.00% | −5,379−23.4% | Reduced |
| Morgan Stanley | 22,837 | $671.6K | 0.00% | −21,181−48.1% | Reduced |
| Bank of New York Mellon Corp | 27,463 | $807.7K | 0.00% | +3,332+13.8% | Added |
| Marshall Wace, LLP | 30,103 | $885.3K | 0.00% | +30,103 | New |
| Polen Capital Management LLC | 31,258 | $919.3K | 0.00% | +14,283+84.1% | Added |
| Manufacturers Life Insurance Company, The | 32,080 | $943.5K | 0.00% | −5,958−15.7% | Reduced |
| Citadel Advisors LLC | 35,923 | $1.06M | 0.00% | −93,989−72.3% | Reduced |
| Wellington Management Group LLP | 42,234 | $1.24M | 0.00% | +42,234 | New |
| UBS Group AG | 46,666 | $1.37M | 0.00% | −4,701−9.2% | Reduced |
| Holocene Advisors, LP | 50,000 | $1.47M | 0.00% | 00.0% | Unchanged |
| Longaeva Partners L.P. | 61,457 | $1.81M | 0.38% | +61,457 | New |
| Driehaus Capital Management LLC | 83,850 | $2.47M | 0.02% | 00.0% | Unchanged |
| TD Asset Management Inc | 87,082 | $2.56M | 0.00% | +37,116+74.3% | Added |
| Northern Trust Corp | 97,711 | $2.87M | 0.00% | +5,821+6.3% | Added |
| Rock Springs Capital Management LP | 99,429 | $2.92M | 0.17% | 00.0% | Unchanged |
| Silverarc Capital Management, LLC | 108,801 | $3.20M | 0.46% | −77,214−41.5% | Reduced |
| Charles Schwab Investment Management Inc | 111,496 | $3.28M | 0.00% | +18,664+20.1% | Added |
| Ameriprise Financial Inc | 153,151 | $4.50M | 0.00% | −83,662−35.3% | Reduced |
| Alyeska Investment Group, L.P. | 186,222 | $5.48M | 0.02% | 00.0% | Unchanged |
| Millennium Management LLC | 214,085 | $6.30M | 0.00% | +200,051+1,425.5% | Added |
| State Street Corp | 240,199 | $7.06M | 0.00% | +115,681+92.9% | Added |
| Franklin Resources Inc | 242,147 | $7.12M | 0.00% | −257,876−51.6% | Reduced |
| Braidwell LP | 314,013 | $9.24M | 0.27% | −767,842−71.0% | Reduced |
| Geode Capital Management, LLC | 316,564 | $9.31M | 0.00% | +27,289+9.4% | Added |
| Siren, L.L.C. | 325,000 | $9.56M | 0.37% | 00.0% | Unchanged |
| Baker Bros. Advisors LP | 400,000 | $11.8M | 0.09% | 00.0% | Unchanged |
| Soleus Capital Management, L.P. | 413,500 | $12.2M | 0.65% | +37,500+10.0% | Added |
| Price T Rowe Associates Inc | 637,760 | $18.8M | 0.00% | −223,478−25.9% | Reduced |
| BlackRock, Inc. | 844,605 | $24.8M | 0.00% | +207,501+32.6% | Added |
| Standard Life Aberdeen plc | 950,547 | $28.0M | 0.04% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 970,590 | $28.5M | 0.44% | 00.0% | Unchanged |
| Jennison Associates LLC | 997,375 | $29.3M | 0.02% | +244,575+32.5% | Added |
| Vanguard Group Inc | 1,143,154 | $33.6M | 0.00% | +512,803+81.4% | Added |
| Perceptive Advisors LLC | 1,179,098 | $34.7M | 1.00% | −36,947−3.0% | Reduced |
| JPMorgan Chase & Co | 1,978,626 | $58.2M | 0.00% | −242,562−10.9% | Reduced |
| Enavate Sciences GP, LLC | 2,478,030 | $72.9M | 22.25% | 00.0% | Unchanged |
| Viking Global Investors LPSuperinvestorViking Global Investors | 3,195,181 | $94.0M | 0.24% | 00.0% | Unchanged |
| Atlas Venture Life Science Advisors, LLC | 3,615,527 | $106.3M | 14.13% | −78,493−2.1% | Reduced |
| OrbiMed Advisors LLC | 3,704,959 | $109.0M | 2.61% | 00.0% | Unchanged |
| TPG GP A, LLC | 6,744,962 | $198.4M | 10.80% | 00.0% | Unchanged |
| Ra Capital Management, L.P. | 10,445,322 | $307.2M | 3.79% | 00.0% | Unchanged |
| Prudential Financial Inc | 0 | $0 | 0.00% | −135,185−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −80,000−100.0% | Sold out |
| Options Solutions, LLC | 0 | $0 | 0.00% | −16,975−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −14,834−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −14,017−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −2,300−100.0% | Sold out |