Sionna Therapeutics, Inc. SION
CIK 0002036042 · CUSIP 829401108
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | RA CAPITAL MANAGEMENT, L.P. CIK 1346824 · View history | $307.20M 10,445,322 shares | 3.79% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 02 | TPG GP A, LLC CIK 1903793 · View history | $198.37M 6,744,962 shares | 10.80% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 03 | ORBIMED ADVISORS LLC CIK 1055951 · View history | $108.96M 3,704,959 shares | 2.62% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 04 | Atlas Venture Life Science Advisors, LLC CIK 1917529 · View history | $106.33M 3,615,527 shares | 14.13% | -78.49K(-2.10%)Reduced | SEC filing ↗ Nov 13, 2025 | ▾ |
| 05 | VIKING GLOBAL INVESTORS LP CIK 1103804 · View history | $93.97M 3,195,181 shares | 0.24% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 06 | ENAVATE SCIENCES GP, LLC CIK 1953107 · View history | $72.88M 2,478,030 shares | 22.25% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 07 | JPMORGAN CHASE & CO CIK 19617 · Amended · View history | $58.19M 1,978,626 shares | 0.00% | -242.56K(-10.90%)Reduced | SEC filing ↗ Nov 26, 2025 | ▾ |
| 08 | PERCEPTIVE ADVISORS LLC CIK 1224962 · View history | $34.68M 1,179,098 shares | 1.00% | -36.95K(-3.00%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 09 | VANGUARD GROUP INC CIK 102909 · View history | $33.62M 1,143,154 shares | 0.00% | +512.80K(+81.40%)Added | SEC filing ↗ Nov 7, 2025 | ▾ |
| 10 | JENNISON ASSOCIATES LLC CIK 53417 · View history | $29.33M 997,375 shares | 0.02% | +244.57K(+32.50%)Added | SEC filing ↗ Oct 30, 2025 | ▾ |
| 11 | DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) CIK 1009258 · View history | $28.55M 970,590 shares | 0.44% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 12 | Aberdeen Group plc CIK 1716774 · View history | $27.96M 950,547 shares | 0.04% | 0(0.00%)Unchanged | SEC filing ↗ Nov 7, 2025 | ▾ |
| 13 | BlackRock, Inc. CIK 2012383 · View history | $24.84M 844,605 shares | 0.00% | +207.50K(+32.60%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 14 | PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history | $18.76M 637,760 shares | 0.00% | -223.48K(-25.90%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 15 | Soleus Capital Management, L.P. CIK 1802630 · View history | $12.16M 413,500 shares | 0.65% | +37.50K(+10.00%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 16 | BAKER BROS. ADVISORS LP CIK 1263508 · View history | $11.76M 400,000 shares | 0.09% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 17 | Siren, L.L.C. CIK 2005245 · View history | $9.56M 325,000 shares | 0.37% | 0(0.00%)Unchanged | SEC filing ↗ Nov 13, 2025 | ▾ |
| 18 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $9.31M 316,564 shares | 0.00% | +27.29K(+9.40%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 19 | BRAIDWELL LP CIK 1920938 · View history | $9.24M 314,013 shares | 0.27% | -767.84K(-71.00%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 20 | FRANKLIN RESOURCES INC CIK 38777 · View history | $7.12M 242,147 shares | 0.00% | -257.88K(-51.60%)Reduced | SEC filing ↗ Nov 13, 2025 | ▾ |
Showing 20 / 78 institutions. The complete set is available through the API.
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