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, Q1 2025
Institutional positions in Sionna Therapeutics, Inc. as of Mar 31, 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
- 47
- +47 vs. Q4 2024
- Shares held
- 41.5M
- +41.5M vs. Q4 2024
- Total value
- $434.1M
- +$434.1M vs. Q4 2024
- New holders
- 47
- 0 more added
- Sold out
- 0
- 0 more reduced
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Sionna Therapeutics, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 10,445,322 | $109.3M | 1.82% | +10,445,322 | New |
| TPG GP A, LLC | 6,684,962 | $69.9M | 1.41% | +6,684,962 | New |
| OrbiMed Advisors LLC | 3,704,959 | $38.8M | 0.93% | +3,704,959 | New |
| Atlas Venture Life Science Advisors, LLC | 3,694,020 | $38.6M | 7.41% | +3,694,020 | New |
| Viking Global Investors LPSuperinvestorViking Global Investors | 2,952,754 | $30.9M | 0.10% | +2,952,754 | New |
| Enavate Sciences GP, LLC | 2,478,030 | $25.9M | 19.53% | +2,478,030 | New |
| JPMorgan Chase & Co | 2,169,599 | $22.7M | 0.00% | +2,169,599 | New |
| Perceptive Advisors LLC | 1,251,101 | $13.1M | 0.46% | +1,251,101 | New |
| Price T Rowe Associates Inc | 996,212 | $10.4M | 0.00% | +996,212 | New |
| Jennison Associates LLC | 859,927 | $8.99M | 0.01% | +859,927 | New |
| Deerfield Management Company, L.P. (Series C) | 747,000 | $7.81M | 0.15% | +747,000 | New |
| Standard Life Aberdeen plc | 745,964 | $7.80M | 0.02% | +745,964 | New |
| Vanguard Group Inc | 546,167 | $5.71M | 0.00% | +546,167 | New |
| Franklin Resources Inc | 500,023 | $5.23M | 0.00% | +500,023 | New |
| Baker Bros. Advisors LP | 400,000 | $4.18M | 0.05% | +400,000 | New |
| Driehaus Capital Management LLC | 328,889 | $3.44M | 0.03% | +328,889 | New |
| Citadel Advisors LLC | 326,500 | $3.42M | 0.00% | +326,500 | New |
| Siren, L.L.C. | 325,000 | $3.40M | 0.19% | +325,000 | New |
| Soleus Capital Management, L.P. | 240,000 | $2.51M | 0.20% | +240,000 | New |
| Zimmer Partners, LP | 237,500 | $2.48M | 0.05% | +237,500 | New |
| Ameriprise Financial Inc | 209,266 | $2.19M | 0.00% | +209,266 | New |
| BlackRock, Inc. | 198,396 | $2.08M | 0.00% | +198,396 | New |
| Alyeska Investment Group, L.P. | 186,222 | $1.95M | 0.01% | +186,222 | New |
| Millennium Management LLC | 179,072 | $1.87M | 0.00% | +179,072 | New |
| Geode Capital Management, LLC | 135,563 | $1.42M | 0.00% | +135,563 | New |
| CenterBook Partners LP | 114,284 | $1.20M | 0.08% | +114,284 | New |
| Silverarc Capital Management, LLC | 114,138 | $1.19M | 0.25% | +114,138 | New |
| Rock Springs Capital Management LP | 99,429 | $1.04M | 0.06% | +99,429 | New |
| Woodline Partners LP | 80,000 | $836.8K | 0.01% | +80,000 | New |
| Charles Schwab Investment Management Inc | 64,644 | $676.2K | 0.00% | +64,644 | New |
| Goldman Sachs Group Inc | 63,741 | $666.7K | 0.00% | +63,741 | New |
| Prudential Financial Inc | 63,000 | $659.0K | 0.00% | +63,000 | New |
| StemPoint Capital LP | 60,000 | $627.6K | 0.20% | +60,000 | New |
| TD Asset Management Inc | 55,366 | $579.1K | 0.00% | +55,366 | New |
| Holocene Advisors, LP | 50,000 | $523.0K | 0.00% | +50,000 | New |
| Squarepoint Ops LLC | 33,964 | $355.3K | 0.00% | +33,964 | New |
| Manufacturers Life Insurance Company, The | 33,549 | $350.9K | 0.00% | +33,549 | New |
| Northern Trust Corp | 26,822 | $280.6K | 0.00% | +26,822 | New |
| Aster Capital Management (DIFC) Ltd | 14,757 | $203.2K | 0.04% | +14,757 | New |
| State Street Corp | 14,400 | $150.6K | 0.00% | +14,400 | New |
| Balyasny Asset Management LLC | 13,060 | $136.6K | 0.00% | +13,060 | New |
| Marshall Wace, LLP | 12,188 | $127.5K | 0.00% | +12,188 | New |
| Two Sigma Investments, LP | 11,715 | $122.5K | 0.00% | +11,715 | New |
| UBS Group AG | 11,146 | $116.6K | 0.00% | +11,146 | New |
| Bank of America Corp | 8,739 | $91.4K | 0.00% | +8,739 | New |
| Morgan Stanley | 3,939 | $41.2K | 0.00% | +3,939 | New |
| Royal Bank of Canada | 618 | $6.00K | 0.00% | +618 | New |