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, Q4 2025
Institutional positions in Sionna Therapeutics, Inc. as of Dec 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
- 101
- +23 vs. Q3 2025
- Shares held
- 44.0M
- +1.11M (+2.6%) vs. Q3 2025
- Total value
- $1.81B
- +$548.2M (+43.5%) vs. Q3 2025
- New holders
- 30
- 39 more added
- Sold out
- 7
- 20 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Sionna Therapeutics, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rothschild Investment LLC | 1 | $41 | 0.00% | +1 | New |
| The PNC Financial Services Group, Inc. | 5 | $206 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 20 | $823 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 25 | $1.03K | 0.00% | −19−43.2% | Reduced |
| Allworth Financial LP | 28 | $1.15K | 0.00% | +6+27.3% | Added |
| Aster Capital Management (DIFC) Ltd | 37 | $1.52K | 0.00% | −372−91.0% | Reduced |
| Rockefeller Capital Management L.P. | 48 | $1.98K | 0.00% | +48 | New |
| US Bancorp | 65 | $2.67K | 0.00% | −46−41.4% | Reduced |
| CWM, LLC | 80 | $3.00K | 0.00% | +20+33.3% | Added |
| Sterling Capital Management LLC | 105 | $4.32K | 0.00% | +75+250.0% | Added |
| Daiwa Securities Group Inc. | 149 | $6.00K | 0.00% | +149 | New |
| GAMMA Investing LLC | 177 | $7.28K | 0.00% | +24+15.7% | Added |
| Farther Finance Advisors, LLC | 190 | $7.82K | 0.00% | +190 | New |
| FMR LLC | 384 | $15.8K | 0.00% | +150+64.1% | Added |
| Amalgamated Bank | 504 | $21.0K | 0.00% | +83+19.7% | Added |
| Royal Bank of Canada | 489 | $21.0K | 0.00% | +111+29.4% | Added |
| GF Fund Management Co. Ltd. | 876 | $36.0K | 0.00% | +876 | New |
| California State Teachers Retirement System | 988 | $40.6K | 0.00% | +217+28.1% | Added |
| Tower Research Capital LLC (TRC) | 1,129 | $46.4K | 0.00% | −3,361−74.9% | Reduced |
| Ameritas Investment Partners, Inc. | 1,302 | $53.6K | 0.00% | +43+3.4% | Added |
| Balyasny Asset Management LLC | 1,406 | $57.8K | 0.00% | +1,406 | New |
| Legal & General Group Plc | 1,682 | $69.2K | 0.00% | −5,692−77.2% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 2,169 | $89.2K | 0.00% | +2,169 | New |
| BNP Paribas Arbitrage, SA | 2,264 | $93.1K | 0.00% | −116−4.9% | Reduced |
| Cygnus Capital Advisors, LLC | 2,400 | $99.0K | 0.07% | +2,400 | New |
| AlphaCentric Advisors LLC | 2,720 | $111.9K | 0.11% | +2,720 | New |
| Police & Firemen's Retirement System of New Jersey | 4,232 | $174.1K | 0.00% | +998+30.9% | Added |
| CIBC Private Wealth Group, LLC | 4,500 | $185.1K | 0.00% | +4,500 | New |
| Los Angeles Capital Management LLC | 5,189 | $197.2K | 0.00% | +5,189 | New |
| ProShare Advisors LLC | 4,903 | $201.7K | 0.00% | +4,903 | New |
| XTX Topco Ltd | 4,926 | $202.7K | 0.01% | +4,926 | New |
| Citigroup Inc | 5,185 | $213.3K | 0.00% | +4,498+654.7% | Added |
| New York State Common Retirement Fund | 5,300 | $218.0K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 5,742 | $236.2K | 0.00% | +5,742 | New |
| Dark Forest Capital Management LP | 5,991 | $246.5K | 0.01% | +5,991 | New |
| American Century Companies Inc | 6,180 | $254.2K | 0.00% | +6,180 | New |
| Virtus Investment Advisers, Inc. | 6,220 | $255.9K | 0.07% | −478−7.1% | Reduced |
| Two Sigma Investments, LP | 6,400 | $263.3K | 0.00% | +6,400 | New |
| Kennedy Capital Management, Inc. | 6,752 | $277.8K | 0.01% | +6,752 | New |
| Intech Investment Management LLC | 7,589 | $312.2K | 0.00% | +103+1.4% | Added |
| MetLife Investment Management | 8,565 | $352.4K | 0.00% | +532+6.6% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 8,915 | $367.1K | 0.00% | +3,272+58.0% | Added |
| Profund Advisors LLC | 9,213 | $379.0K | 0.01% | +9,213 | New |
| Deutsche Bank AG | 10,029 | $412.6K | 0.00% | +433+4.5% | Added |
| China Universal Asset Management Co., Ltd. | 10,272 | $422.6K | 0.03% | +5,272+105.4% | Added |
| SG Americas Securities, LLC | 10,691 | $440.0K | 0.00% | +10,691 | New |
| Alliancebernstein L.P. | 15,620 | $642.6K | 0.00% | +15,620 | New |
| Squarepoint Ops LLC | 16,360 | $673.0K | 0.00% | +6,198+61.0% | Added |
| Wells Fargo & Company | 17,551 | $722.0K | 0.00% | +9,975+131.7% | Added |
| Rhumbline Advisers | 17,694 | $727.9K | 0.00% | +454+2.6% | Added |
| Russell Investments Group, Ltd. | 21,941 | $902.7K | 0.00% | +20,919+2,046.9% | Added |
| Nuveen, LLC | 23,734 | $976.4K | 0.00% | +7,694+48.0% | Added |
| Rafferty Asset Management, LLC | 24,690 | $1.02M | 0.00% | +24,690 | New |
| Polen Capital Management LLC | 31,258 | $1.29M | 0.01% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 35,134 | $1.45M | 0.00% | +7,671+27.9% | Added |
| Goldman Sachs Group Inc | 36,269 | $1.49M | 0.00% | +24,091+197.8% | Added |
| Alps Advisors Inc | 36,648 | $1.51M | 0.01% | +36,648 | New |
| Wellington Management Group LLP | 38,347 | $1.58M | 0.00% | −3,887−9.2% | Reduced |
| Silverarc Capital Management, LLC | 41,460 | $1.71M | 0.25% | −67,341−61.9% | Reduced |
| Bank of America Corp | 43,567 | $1.79M | 0.00% | +37,026+566.1% | Added |
| Barclays PLC | 48,172 | $1.98M | 0.00% | +30,529+173.0% | Added |
| Morgan Stanley | 49,876 | $2.05M | 0.00% | +27,039+118.4% | Added |
| Seven Grand Managers, LLC | 50,000 | $2.06M | 0.16% | +50,000 | New |
| Manufacturers Life Insurance Company, The | 69,424 | $2.87M | 0.00% | +37,344+116.4% | Added |
| Longaeva Partners L.P. | 79,729 | $3.28M | 0.39% | +18,272+29.7% | Added |
| Ensign Peak Advisors, Inc | 79,862 | $3.29M | 0.01% | +79,862 | New |
| Millennium Management LLC | 80,546 | $3.31M | 0.00% | −133,539−62.4% | Reduced |
| Driehaus Capital Management LLC | 83,850 | $3.45M | 0.02% | 00.0% | Unchanged |
| UBS Group AG | 89,177 | $3.67M | 0.00% | +42,511+91.1% | Added |
| Rock Springs Capital Management LP | 99,429 | $4.09M | 0.21% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 101,643 | $4.18M | 0.00% | −51,508−33.6% | Reduced |
| Invesco Ltd. | 111,162 | $4.57M | 0.00% | +111,162 | New |
| Northern Trust Corp | 112,116 | $4.61M | 0.00% | +14,405+14.7% | Added |
| TD Asset Management Inc | 113,352 | $4.66M | 0.00% | +26,270+30.2% | Added |
| Artia Global Partners LP | 119,741 | $4.93M | 0.79% | +119,741 | New |
| Charles Schwab Investment Management Inc | 123,686 | $5.09M | 0.00% | +12,190+10.9% | Added |
| Alyeska Investment Group, L.P. | 136,222 | $5.60M | 0.02% | −50,000−26.8% | Reduced |
| Franklin Resources Inc | 175,483 | $7.22M | 0.00% | −66,664−27.5% | Reduced |
| Superstring Capital Management LP | 180,593 | $7.43M | 3.98% | +180,593 | New |
| Kalehua Capital Management LLC | 197,072 | $8.11M | 8.02% | +197,072 | New |
| Soleus Capital Management, L.P. | 268,500 | $11.0M | 0.47% | −145,000−35.1% | Reduced |
| Siren, L.L.C. | 300,000 | $12.3M | 0.37% | −25,000−7.7% | Reduced |
| Geode Capital Management, LLC | 380,042 | $15.6M | 0.00% | +63,478+20.1% | Added |
| Baker Bros. Advisors LP | 400,000 | $16.5M | 0.10% | 00.0% | Unchanged |
| Eventide Asset Management, LLC | 639,045 | $26.3M | 0.41% | +639,045 | New |
| State Street Corp | 693,395 | $28.5M | 0.00% | +453,196+188.7% | Added |
| Price T Rowe Associates Inc | 831,373 | $34.2M | 0.00% | +193,613+30.4% | Added |
| Standard Life Aberdeen plc | 839,960 | $34.6M | 0.05% | −110,587−11.6% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 970,590 | $39.9M | 0.51% | 00.0% | Unchanged |
| Citadel Advisors LLC | 1,087,325 | $44.7M | 0.03% | +1,051,402+2,926.8% | Added |
| Jennison Associates LLC | 1,115,278 | $45.9M | 0.03% | +117,903+11.8% | Added |
| Perceptive Advisors LLC | 1,179,098 | $48.5M | 0.89% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,184,951 | $48.7M | 0.00% | +41,797+3.7% | Added |
| JPMorgan Chase & Co | 1,231,819 | $50.7M | 0.00% | −746,807−37.7% | Reduced |
| BlackRock, Inc. | 1,291,599 | $53.1M | 0.00% | +446,994+52.9% | Added |
| Enavate Sciences GP, LLC | 2,478,030 | $101.9M | 20.12% | 00.0% | Unchanged |
| Atlas Venture Life Science Advisors, LLC | 2,995,602 | $123.2M | 14.24% | −619,925−17.1% | Reduced |
| Viking Global Investors LPSuperinvestorViking Global Investors | 3,195,181 | $131.4M | 0.35% | 00.0% | Unchanged |
| OrbiMed Advisors LLC | 3,561,655 | $146.5M | 3.00% | −143,304−3.9% | Reduced |
| TPG GP A, LLC | 6,744,962 | $277.5M | 10.33% | 00.0% | Unchanged |