Sionna TherapeuticsSION
13F holders, Q1 2025 (March 31)47holders
3famous investors
$10.46avg. 13F price*
At the end of Q1 2025, 47 institutions reported holding Sionna Therapeutics Inc. (SION) in their 13F filings. The largest holders were Ra Capital Management, L.P. ($109.3M), TPG GP A, LLC ($69.9M) and Orbimed Advisors LLC ($38.8M). 3 famous investors held it, including Andreas Halvorsen (0.1% of Viking Global Investors's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Sionna Therapeutics Inc.
- CUSIP
- 829401108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 47 | $434.1M |
| Exits | 0 | $0 |
Ownership 47 holders
| Ra Capital Management, L.P. | 1.83% | New | 10,445,322 | $109.3M |
| TPG GP A, LLC | 1.41% | New | 6,684,962 | $69.9M |
| Orbimed Advisors LLC | 0.93% | New | 3,704,959 | $38.8M |
| Atlas Venture Life Science Advisors, LLC | 7.41% | New | 3,694,020 | $38.6M |
| Viking Global Investors | 0.10% | New | 2,952,754 | $30.9M |
| Enavate Sciences Gp, LLC | 19.53% | New | 2,478,030 | $25.9M |
| JPMorgan Chase & Co. | 0.00% | New | 2,169,599 | $22.7M |
| Perceptive Advisors LLC | 0.46% | New | 1,251,101 | $13.1M |
| T. Rowe Price Associates Inc. | 0.00% | New | 996,212 | $10.4M |
| Jennison Associates LLC | 0.01% | New | 859,927 | $9.0M |
| Deerfield Management Company, L.P. | 0.18% | New | 747,000 | $7.8M |
| Aberdeen Group plc | 0.02% | New | 745,964 | $7.8M |
| Vanguard Group Inc. | 0.00% | New | 546,167 | $5.7M |
| Franklin Resources Inc. | 0.00% | New | 500,023 | $5.2M |
| Baker Bros. Advisors LP | 0.05% | New | 400,000 | $4.2M |
| Driehaus Capital Management LLC | 0.03% | New | 328,889 | $3.4M |
| Citadel Advisors | 0.00% | New | 326,500 | $3.4M |
| Siren, L.L.C. | 0.19% | New | 325,000 | $3.4M |
| Soleus Capital Management, L.P. | 0.20% | New | 240,000 | $2.5M |
| Zimmer Partners, LP | 0.05% | New | 237,500 | $2.5M |
| Ameriprise Financial Inc. | 0.00% | New | 209,266 | $2.2M |
| BlackRock, Inc. | 0.00% | New | 198,396 | $2.1M |
| Alyeska Investment Group, L.P. | 0.01% | New | 186,222 | $1.9M |
| Millennium Management | 0.00% | New | 179,072 | $1.9M |
| Geode Capital Management, LLC | 0.00% | New | 135,563 | $1.4M |
| CenterBook Partners LP | 0.08% | New | 114,284 | $1.2M |
| Silverarc Capital Management, LLC | 0.25% | New | 114,138 | $1.2M |
| Rock Springs Capital Management LP | 0.06% | New | 99,429 | $1.0M |
| Woodline Partners LP | 0.01% | New | 80,000 | $837K |
| Charles Schwab Investment Management Inc. | 0.00% | New | 64,644 | $676K |
| Goldman Sachs Group Inc. | 0.00% | New | 63,741 | $667K |
| Prudential Financial Inc. | 0.00% | New | 63,000 | $659K |
| Stempoint Capital LP | 0.20% | New | 60,000 | $628K |
| TD Asset Management Inc | 0.00% | New | 55,366 | $579K |
| Holocene Advisors, LP | 0.00% | New | 50,000 | $523K |
| Squarepoint Ops LLC | 0.00% | New | 33,964 | $355K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 33,549 | $351K |
| Northern Trust Corp. | 0.00% | New | 26,822 | $281K |
| Aster Capital Management (DIFC) Ltd | 0.04% | New | 14,757 | $203K |
| State Street Corp. | 0.00% | New | 14,400 | $151K |
| Balyasny Asset Management L.P. | 0.00% | New | 13,060 | $137K |
| Marshall Wace, LLP | 0.00% | New | 12,188 | $127K |
| Two Sigma Investments, LP | 0.00% | New | 11,715 | $123K |
| UBS Group AG | 0.00% | New | 11,146 | $117K |
| Bank of America Corp. | 0.00% | New | 8,739 | $91K |
| Morgan Stanley | 0.00% | New | 3,939 | $41K |
| Royal Bank of Canada | 0.00% | New | 618 | $6K |
"% of holder's portfolio" is SION's weight in each manager's 13F, not the share of Sionna Therapeutics Inc. the manager owns.