Stock ownership
SIONNA THERAPEUTICS INC
- Ticker
- SION
- CUSIP
- 829401108
- Held by
- 3 funds
- Combined value
- $145,204,216
+% bought more, −% sold down — each fund's last-quarter move (change in share count).
| Fund | Quarter | Last quarter | Value | % of fund |
|---|---|---|---|---|
| Viking Global Investors position history | Q1 2026 | — | $128,094,806 | 0.36% |
| Baker Bros. Advisors position history | Q1 2026 | — | $16,036,000 | 0.09% |
| Polen Capital Management position history | Q1 2026 | −14% | $1,073,410 | 0.01% |