Artisan Partners Limited Partnership
Position in SION — Sionna Therapeutics, Inc.
CIK 1466153
Milwaukee, WI
Position in SION
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$8,336,017
New position
Shares Held
189,498
first reported quarter
Ownership
0.419%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#32
of 146 holders
Holding Since
Jun 2026
1 quarter on record
Voting authority
Sole 92%
Shared 0%
None 8%
Position in Biotechnology
Healthcare · as of Jun 30, 2026Artisan Partners Limited Partnership holds $3,943,526,578 across 24 Biotechnology names. SION ranks #23 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ARGX |
Argenx SE
|
1,508,778 | $1,399,798,965 | |
| 2 | ASND |
Ascendis Pharma A/S
|
2,634,024 | $702,546,881 | |
| 3 | INSM |
INSMED Inc
|
5,441,718 | $580,195,973 | |
| 4 | TWST |
Twist Bioscience Corp
|
4,802,017 | $494,031,508 | |
| 5 | IONS |
Ionis Pharmaceuticals Inc
|
2,640,024 | $209,327,502 | |
| 6 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
210,205 | $112,869,574 | |
| 7 | CELC |
Celcuity Inc.
|
461,591 | $48,291,650 | |
| 8 | LEGN |
Legend Biotech Corp
|
1,559,441 | $45,036,656 |
All Filings in SION
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $8,336,017 | 189,498 | Shares | Sole | 2026-08-13 | |
| No filing history on record for this holder in this stock. | ||||||