Russell Investments Group, Ltd.
Position in SION — Sionna Therapeutics, Inc.
CIK 1692234
Seattle, WA
Position in SION
as of Mar 31, 2026
· filed May 8, 2026
Position Value
$1,941,116
+$1,038,466 QoQ
Shares Held
48,419
+120.7% QoQ
Ownership
0.107%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2025
3 quarters on record
Voting authority
Sole 95%
Shared 0%
None 5%
Common Shares in SION Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026Russell Investments Group, Ltd. holds $1,224,048,594 across 266 Biotechnology names. SION ranks #73 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | REGN |
Regeneron Pharmaceuticals, Inc.
|
228,086 | $176,228,356 | |
| 2 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
367,691 | $164,188,731 | |
| 3 | RPRX |
Royalty Pharma plc
|
1,397,958 | $67,060,041 | |
| 4 | INCY |
Incyte Corp
|
638,242 | $60,071,331 | |
| 5 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
147,533 | $48,814,236 | |
| 6 | MRNA |
Moderna, Inc.
|
710,640 | $36,100,509 | |
| 7 | BMRN |
Biomarin Pharmaceutical Inc
|
606,224 | $34,245,589 | |
| 8 | INSM |
INSMED Inc
|
169,162 | $27,661,365 |
All Filings in SION
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,941,116 | 48,419 | Shares | Defined | 2026-05-08 | |
| 2025-12-31 | $902,650 | 21,941 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $30,057 | 1,022 | Shares | Defined | 2025-11-13 | |
| No filing history on record for this holder in this stock. | ||||||