Fund holders13F
Funds That Own Sionna Therapeutics, Inc. (SION)
1 of the 26 major funds we track reported SION in their latest 13F, worth $140.6M combined at quarter end.
| Fund | Quarter | Shares | Value | Change |
|---|---|---|---|---|
| Viking Global Investors | Q2 2026 | 3,195,181 | $140.6M | No change |
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings
A 13F lists long positions in U.S.-listed stocks and some options at quarter end. It does not show short positions, cash, most foreign holdings, or trades made since. What a 13F can't tell you →