PRICE T ROWE ASSOCIATES INC /MD/
Position in SION — Sionna Therapeutics, Inc.
CIK 80255
BALTIMORE, MD
Position in SION
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$21,027,923
-$9,295,190 QoQ
Shares Held
478,016
-36.8% QoQ
Ownership
1.06%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#17
of 146 holders
Holding Since
Mar 2025
6 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in SION Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026PRICE T ROWE ASSOCIATES INC /MD/ holds $17,929,584,838 across 304 Biotechnology names. SION ranks #94 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ARGX |
Argenx SE
|
2,678,047 | $2,484,611,664 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,529,709 | $953,834,749 | |
| 3 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
1,728,421 | $858,558,562 | |
| 4 | KYMR |
Kymera Therapeutics, Inc.
|
7,112,980 | $815,645,416 | |
| 5 | RPRX |
Royalty Pharma plc
|
11,193,657 | $627,628,347 | |
| 6 | RVMD |
Revolution Medicines, Inc.
|
2,969,853 | $447,655,945 | |
| 7 | MRNA |
Moderna, Inc.
|
5,589,560 | $391,436,886 | |
| 8 | TWST |
Twist Bioscience Corp
|
3,634,652 | $373,932,997 |
All Filings in SION
Export CSV
6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $21,027,923 | 478,016 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $30,323,113 | 756,376 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $34,202,685 | 831,373 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $18,756,520 | 637,760 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $14,942,478 | 861,238 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $10,420,377 | 996,212 | Shares | Sole | 2025-05-14 | |
| No filing history on record for this holder in this stock. | ||||||