Sionna Therapeutics, Inc.
SION- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0002036042
In the last 90 days, Sionna Therapeutics, Inc. insiders filed 0 open-market purchases and 4 sales; 146 institutions reported holding it in 13F filings for Q2 2026, worth $2.11B in total; Viking Global Investors is the only superinvestor holding it.
Superinvestors holding SION, Q2 2026
1 superinvestor reports holding Sionna Therapeutics, Inc. on Form 13F, worth $140.6M in total. Weight is Sionna Therapeutics, Inc.'s share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| Viking Global InvestorsAndreas Halvorsen | 0.4% | 3,195,181 | $140.6M | Unchanged |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of SION each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2025
1 superinvestor holding at quarter end
- Added
- Viking Global Investors (+8.2%)
Q1 2025
1 superinvestor holding at quarter end