SION

Sionna Therapeutics, Inc. · XNAS

Now: 1 holder · 0 updated for Q3 · 1 on earlier filings (Q3 due Nov 14)
Holders: 1 now · 0 on Q3 2026
Median weight: 0.40%
Sector: Health Care
Type: equity · US

Moves

No moves yet in Q3 · 0 of its 1 holder has filed · due Nov 14

Streakslongest holders · 7 quarters on record

Viking Andreas Halvorsen, CEO 0.4%6 quarters

The record for SION begins Q1 2025: 7 quarters.

Over timeNow 1 holder · 6 complete quarters, Q1 2025 to Q2 2026

Managers holding1 Q2 2026

Largest weight0.4% Q2 2026

Holders1 now · 0 on Q3 2026 · 1 exited


VikingQ2 2026Q3 due Nov 14Andreas Halvorsen, CEO	0.40%	3,195,181	$141M	held	—	6 q
PolenQ2 2026Q3 due Nov 14Dan Davidowitz, portfolio manager	—	—	—	exited	0.00 pp	—