SIONSIONNA THERAPEUTICS INC
CUSIP 829401108 · Yahoo Finance ↗ · Google Finance ↗
Sionna Therapeutics Inc (SION) has 121 institutional holders in Filings Flow’s 13F database, together reporting 45.32M shares worth $1.8B as of Q1 2026. The largest reported holders are Ra Capital Management, L.P., Tpg GP A, LLC, and Orbimed Advisors LLC.
Institutional Holders
121
Q1 2026
Reported Value
$1.8B
Ticker
SION
Quarters Tracked
3
Ownership Trend
Institutional holders
Total reported value
Holders
Mixed quarters
| Manager | % of Portfolio | Value | Shares | Quarter |
|---|---|---|---|---|
| Enavate Sciences GP, LLC$352M AUM | 28.26% | $99M | 2.48M | Q1 2026OLDER |
| Atlas Venture Life Science Advisors, LLC$790M AUM | 15.20% | $120M | 3.00M | Q1 2026OLDER |
| Kalehua Capital Management LLC$260M AUM | 11.18% | $16M | 394.1K | Q1 2026OLDER |
| TPG GP A, LLC$3.7B AUM | 7.08% | $260M | 6.49M | Q1 2026OLDER |
| RA CAPITAL MANAGEMENT, L.P.$9.4B AUM | 4.21% | $397M | 9.91M | Q1 2026OLDER |
| SUPERSTRING CAPITAL MANAGEMENT LP$140M AUM | 4.04% | $6M | 141.0K | Q1 2026OLDER |
| GordonMD Global Investments LP$144M AUM | 3.80% | $5M | 136.0K | Q1 2026OLDER |
| ORBIMED ADVISORS LLC$5.0B AUM | 2.81% | $142M | 3.53M | Q1 2026OLDER |
| Ishara Investments LP$106M AUM | 1.87% | $2M | 49.2K | Q1 2026OLDER |
| Sio Capital Management, LLC$697M AUM | 1.69% | $12M | 294.3K | Q1 2026OLDER |
| Artia Global Partners LP$499M AUM | 0.96% | $5M | 119.7K | Q1 2026OLDER |
| STEMPOINT CAPITAL LP$1.0B AUM | 0.56% | $3M | 73.1K | Q1 2026OLDER |
| PERCEPTIVE ADVISORS LLC$5.1B AUM | 0.52% | $26M | 658.4K | Q1 2026OLDER |
| Soleus Capital Management, L.P.$2.5B AUM | 0.48% | $12M | 293.5K | Q1 2026OLDER |
| DEERFIELD MANAGEMENT COMPANY, L.P.$8.5B AUM | 0.46% | $39M | 970.6K | Q1 2026OLDER |
| Rhenman & Partners Asset Management AB$810M AUM | 0.43% | $4M | 87.5K | Q1 2026OLDER |
| EVENTIDE ASSET MANAGEMENT, LLC$6.0B AUM | 0.43% | $26M | 645.5K | Q1 2026OLDER |
| VIKING GLOBAL INVESTORS LP$35.7B AUM | 0.36% | $128M | 3.20M | Q1 2026OLDER |
| Siren, L.L.C.$3.6B AUM | 0.33% | $12M | 300.0K | Q1 2026OLDER |
| BRAIDWELL LP$3.0B AUM | 0.27% | $9M | 314.0K | Q3 2025OLDER |
| Rock Springs Capital Management LP$1.7B AUM | 0.23% | $4M | 99.4K | Q1 2026OLDER |
| AlphaCentric Advisors LLC$100M AUM | 0.19% | $193,154 | 4.8K | Q1 2026OLDER |
| SILVERARC CAPITAL MANAGEMENT, LLC$980M AUM | 0.16% | $2M | 39.4K | Q1 2026OLDER |
| SEVEN GRAND MANAGERS, LLC$1.5B AUM | 0.13% | $2M | 50.0K | Q1 2026OLDER |
| VARCOV Co.$268M AUM | 0.10% | $263,431 | 6.6K | Q1 2026OLDER |
| Integral Health Asset Management, LLC$2.1B AUM | 0.10% | $2M | 50.0K | Q1 2026OLDER |
| BAKER BROS. ADVISORS LP$17.4B AUM | 0.09% | $16M | 400.0K | Q1 2026OLDER |
| Virtus Investment Advisers, LLC$363M AUM | 0.07% | $255,534 | 6.4K | Q1 2026OLDER |
| Quarry LP$558M AUM | 0.05% | $252,727 | 6.3K | Q1 2026OLDER |
| JENNISON ASSOCIATES LLC$145.4B AUM | 0.04% | $58M | 1.45M | Q1 2026OLDER |
| Aberdeen Group plc$61.9B AUM | 0.04% | $23M | 564.2K | Q1 2026OLDER |
| China Universal Asset Management Co., Ltd.$1.3B AUM | 0.02% | $317,513 | 7.9K | Q1 2026OLDER |
| DRIEHAUS CAPITAL MANAGEMENT LLC$13.6B AUM | 0.02% | $3M | 76.6K | Q1 2026OLDER |
| Maven Securities LTD$5.2B AUM | 0.02% | $1M | 25.0K | Q1 2026OLDER |
| Ensign Peak Advisors, Inc$53.7B AUM | 0.02% | $10M | 255.6K | Q1 2026OLDER |
| Longaeva Partners L.P.$2.7B AUM | 0.02% | $508,862 | 12.7K | Q1 2026OLDER |
| XTX Topco Ltd$5.8B AUM | 0.02% | $944,160 | 23.6K | Q1 2026OLDER |
| Alyeska Investment Group, L.P.$35.4B AUM | 0.02% | $5M | 136.2K | Q1 2026OLDER |
| PROFUND ADVISORS LLC$2.7B AUM | 0.01% | $398,455 | 9.9K | Q1 2026OLDER |
| DARK FOREST CAPITAL MANAGEMENT LP$1.1B AUM | 0.01% | $246,470 | 6.0K | Q4 2025OLDER |
| KENNEDY CAPITAL MANAGEMENT LLC$4.7B AUM | 0.01% | $492,466 | 12.3K | Q1 2026OLDER |
| ADAGE CAPITAL PARTNERS GP, L.L.C.$64.8B AUM | 0.01% | $6M | 150.0K | Q1 2026OLDER |
| CITADEL ADVISORS LLC$618.5B AUM | 0.01% | $47M | 1.17M | Q1 2026OLDER |
| POLEN CAPITAL MANAGEMENT LLC$14.5B AUM | 0.01% | $1M | 26.8K | Q1 2026OLDER |
| Point72 Asset Management, L.P.$78.1B AUM | 0.01% | $5M | 136.5K | Q1 2026OLDER |
| ALPS ADVISORS INC$21.3B AUM | 0.01% | $1M | 36.6K | Q1 2026OLDER |
| Rafferty Asset Management, LLC$24.6B AUM | 0.00% | $887,472 | 22.1K | Q1 2026OLDER |
| PRICE T ROWE ASSOCIATES INC /MD/$865M AUM | 0.00% | $30,324 | 756.4K | Q1 2026OLDER |
| JPMORGAN CHASE & CO$1.56T AUM | 0.00% | $54M | 1.47M | Q1 2026OLDER |
| Holocene Advisors, LP$41.5B AUM | 0.00% | $1M | 50.0K | Q3 2025OLDER |
| TD ASSET MANAGEMENT INC$123.2B AUM | 0.00% | $3M | 83.0K | Q1 2026OLDER |
| Walleye Capital LLC$24.0B AUM | 0.00% | $605,239 | 15.1K | Q1 2026OLDER |
| Tower Research Capital LLC (TRC)$3.8B AUM | 0.00% | $94,292 | 2.4K | Q1 2026OLDER |
| MILLENNIUM MANAGEMENT LLC$240.3B AUM | 0.00% | $6M | 140.6K | Q1 2026OLDER |
| ExodusPoint Capital Management, LP$12.6B AUM | 0.00% | $288,247 | 7.2K | Q1 2026OLDER |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE$116.3B AUM | 0.00% | $3M | 64.5K | Q1 2026OLDER |
| INTECH INVESTMENT MANAGEMENT LLC$10.2B AUM | 0.00% | $220,054 | 5.5K | Q1 2026OLDER |
| Russell Investments Group, Ltd.$93.1B AUM | 0.00% | $2M | 48.4K | Q1 2026OLDER |
| Qube Research & Technologies Ltd$89.9B AUM | 0.00% | $2M | 42.2K | Q1 2026OLDER |
| MetLife Investment Management, LLC$19.6B AUM | 0.00% | $343,371 | 8.6K | Q1 2026OLDER |
| FRANKLIN RESOURCES INC$408.3B AUM | 0.00% | $7M | 175.5K | Q1 2026OLDER |
| Ameritas Investment Partners, Inc.$3.3B AUM | 0.00% | $52,197 | 1.3K | Q1 2026OLDER |
| Police & Firemen's Retirement System of New Jersey$11.7B AUM | 0.00% | $169,661 | 4.2K | Q1 2026OLDER |
| GOLDMAN SACHS GROUP INC$870.9B AUM | 0.00% | $11M | 263.2K | Q1 2026OLDER |
| Jain Global LLC$24.2B AUM | 0.00% | $250,367 | 8.5K | Q3 2025OLDER |
| VANGUARD FIDUCIARY TRUST CO$396.1B AUM | 0.00% | $4M | 112.2K | Q1 2026OLDER |
| STATE STREET CORP$2.90T AUM | 0.00% | $30M | 756.2K | Q1 2026OLDER |
| VANGUARD CAPITAL MANAGEMENT LLC$4.04T AUM | 0.00% | $41M | 1.03M | Q1 2026OLDER |
| GEODE CAPITAL MANAGEMENT, LLC$1.61T AUM | 0.00% | $16M | 389.9K | Q1 2026OLDER |
| BlackRock, Inc.$5.72T AUM | 0.00% | $52M | 1.30M | Q1 2026OLDER |
| MARSHALL WACE, LLP$100.4B AUM | 0.00% | $885,328 | 30.1K | Q3 2025OLDER |
| UBS Group AG$666.3B AUM | 0.00% | $6M | 147.6K | Q1 2026OLDER |
| Hudson Bay Capital Management LP$29.0B AUM | 0.00% | $247,756 | 6.2K | Q1 2026OLDER |
| BNP PARIBAS FINANCIAL MARKETS$205.8B AUM | 0.00% | $2M | 40.6K | Q1 2026OLDER |
| AMERIPRISE FINANCIAL INC$431.8B AUM | 0.00% | $3M | 82.0K | Q1 2026OLDER |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC$654.5B AUM | 0.00% | $5M | 120.3K | Q1 2026OLDER |
| Squarepoint Ops LLC$85.1B AUM | 0.00% | $610,050 | 15.2K | Q1 2026OLDER |
| VANGUARD GROUP INC$6.90T AUM | 0.00% | $49M | 1.18M | Q4 2025OLDER |
| GF FUND MANAGEMENT CO. LTD.$6.0B AUM | 0.00% | $40,210 | 1.0K | Q1 2026OLDER |
| Aster Capital Management (DIFC) Ltd$306M AUM | 0.00% | $1,522 | 37 | Q4 2025OLDER |
| LOS ANGELES CAPITAL MANAGEMENT LLC$25.4B AUM | 0.00% | $165,010 | 4.1K | Q1 2026OLDER |
| RHUMBLINE ADVISERS$116.9B AUM | 0.00% | $733,958 | 18.3K | Q1 2026OLDER |
| NORTHERN TRUST CORP$756.6B AUM | 0.00% | $5M | 116.8K | Q1 2026OLDER |
| RENAISSANCE TECHNOLOGIES LLC$63.9B AUM | 0.00% | $429,386 | 14.6K | Q3 2025OLDER |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$73.7B AUM | 0.00% | $362,944 | 9.2K | Q1 2026OLDER |
| STRS OHIO$25.2B AUM | 0.00% | $116,261 | 2.9K | Q1 2026OLDER |
| GAMMA Investing LLC$2.7B AUM | 0.00% | $10,734 | 244 | Q2 2026 |
| ProShare Advisors LLC$67.5B AUM | 0.00% | $201,710 | 4.9K | Q4 2025OLDER |
| WELLINGTON MANAGEMENT GROUP LLP$535.5B AUM | 0.00% | $2M | 46.1K | Q1 2026OLDER |
| CIBC Private Wealth Group LLC$59.2B AUM | 0.00% | $185,130 | 4.5K | Q4 2025OLDER |
| CITIGROUP INC$234.5B AUM | 0.00% | $723,945 | 18.1K | Q1 2026OLDER |
| VANGUARD PORTFOLIO MANAGEMENT LLC$1.91T AUM | 0.00% | $6M | 142.1K | Q1 2026OLDER |
| NEW YORK STATE COMMON RETIREMENT FUND$71.6B AUM | 0.00% | $212,477 | 5.3K | Q1 2026OLDER |
| Quantbot Technologies LP$2.4B AUM | 0.00% | $7,136 | 178 | Q1 2026OLDER |
| Caitong International Asset Management Co., Ltd$541M AUM | 0.00% | $1,443 | 36 | Q1 2026OLDER |
| Nuveen, LLC$369.3B AUM | 0.00% | $951,496 | 23.7K | Q1 2026OLDER |
| Bank of New York Mellon Corp$543.9B AUM | 0.00% | $1M | 33.8K | Q1 2026OLDER |
| Vanguard Global Advisers, LLC$186.5B AUM | 0.00% | $448,647 | 11.2K | Q1 2026OLDER |
| ALLIANCEBERNSTEIN L.P.$308.8B AUM | 0.00% | $675,107 | 16.4K | Q1 2026OLDER |
| TWO SIGMA INVESTMENTS, LP$123.9B AUM | 0.00% | $220,495 | 5.5K | Q1 2026OLDER |
| BARCLAYS PLC$416.3B AUM | 0.00% | $737,056 | 18.4K | Q1 2026OLDER |
| DEUTSCHE BANK AG\$302.7B AUM | 0.00% | $531,153 | 13.2K | Q1 2026OLDER |
| FMR LLC$1.90T AUM | 0.00% | $3M | 81.4K | Q1 2026OLDER |
| Hughes Financial Services, LLC$651M AUM | 0.00% | $1,042 | 26 | Q1 2026OLDER |
| BANK OF AMERICA CORP /DE/$1.37T AUM | 0.00% | $2M | 50.9K | Q1 2026OLDER |
| Fortitude Family Office, LLC$448M AUM | 0.00% | $601 | 15 | Q1 2026OLDER |
| D. E. Shaw & Co., Inc.$166.3B AUM | 0.00% | $236,226 | 5.7K | Q4 2025OLDER |
| AMERICAN CENTURY COMPANIES INC$194.3B AUM | 0.00% | $254,245 | 6.2K | Q4 2025OLDER |
| MORGAN STANLEY$1.67T AUM | 0.00% | $2M | 49.9K | Q1 2026OLDER |
| Sterling Capital Management LLC$5.3B AUM | 0.00% | $4,209 | 105 | Q1 2026OLDER |
| Farther Finance Advisors, LLC$10.6B AUM | 0.00% | $8,095 | 196 | Q1 2026OLDER |
| BALYASNY ASSET MANAGEMENT L.P.$77.1B AUM | 0.00% | $57,843 | 1.4K | Q4 2025OLDER |
| Invesco Ltd.$653.3B AUM | 0.00% | $432,451 | 10.8K | Q1 2026OLDER |
| Steward Partners Investment Advisory, LLC$19.6B AUM | 0.00% | $10,183 | 254 | Q1 2026OLDER |
| CONTRAVISORY INVESTMENT MANAGEMENT, INC.$566M AUM | 0.00% | $264 | 6 | Q2 2026 |
| WELLS FARGO & COMPANY/MN$530.3B AUM | 0.00% | $236,291 | 5.9K | Q2 2026 |
| Arax Advisory Partners$3.5B AUM | 0.00% | $2,706 | 92 | Q3 2025OLDER |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM$94.5B AUM | 0.00% | $34,798 | 868 | Q1 2026OLDER |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP$893.3B AUM | 0.00% | $293,058 | 7.3K | Q1 2026OLDER |
| Zurcher Kantonalbank (Zurich Cantonalbank)$46.0B AUM | 0.00% | $14,873 | 371 | Q1 2026OLDER |
| Mirae Asset Global Investments Co., Ltd.$299.3B AUM | 0.00% | $93,330 | 2.3K | Q1 2026OLDER |
| EverSource Wealth Advisors, LLC$3.3B AUM | 0.00% | $922 | 23 | Q1 2026OLDER |
| Daiwa Securities Group Inc.$34.8B AUM | 0.00% | $6 | 149 | Q4 2025OLDER |
| Root Financial Partners, LLC$2.2B AUM | 0.00% | $401 | 10 | Q1 2026OLDER |
| Rockefeller Capital Management L.P.$56.4B AUM | 0.00% | $9,661 | 241 | Q1 2026OLDER |
| SIGNATUREFD, LLC$6.5B AUM | 0.00% | $962 | 24 | Q1 2026OLDER |
| Legal & General Group Plc$432.4B AUM | 0.00% | $57,352 | 1.4K | Q1 2026OLDER |
| CWM, LLC$38.1B AUM | 0.00% | $2,686 | 67 | Q1 2026OLDER |
| FEDERATED HERMES, INC.$61.5B AUM | 0.00% | $3,323 | 113 | Q3 2025OLDER |
| Allworth Financial LP$24.7B AUM | 0.00% | $1,163 | 29 | Q1 2026OLDER |
| US BANCORP \DE\$82.4B AUM | 0.00% | $2,045 | 51 | Q1 2026OLDER |
| ROTHSCHILD INVESTMENT LLC$1.9B AUM | 0.00% | $40 | 1 | Q1 2026OLDER |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$481.0B AUM | 0.00% | $4,650 | 116 | Q1 2026OLDER |
| MAI Capital Management$17.7B AUM | 0.00% | $81 | 2 | Q1 2026OLDER |
| PNC FINANCIAL SERVICES GROUP, INC.$173.2B AUM | 0.00% | $641 | 16 | Q1 2026OLDER |
| ROYAL BANK OF CANADA$570.1B AUM | 0.00% | $1,000 | 30 | Q1 2026OLDER |
Holdings are reported up to 45 days after quarter end. Share counts are as filed and not adjusted for stock splits.