TimesSquare Capital Management, LLC
Position in IONS — Ionis Pharmaceuticals Inc
CIK 1313816
NEW YORK, NY
Position in IONS
as of Mar 31, 2026
· filed May 7, 2026
Position Value
$20,700,360
New position
Shares Held
275,674
first reported quarter
Ownership
0.167%
of shares outstanding
% of Portfolio
0.35%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2026
1 quarter on record
Voting authority
Sole 75.83595115970313.ToString("F0")%
Shared 0.ToString("F0")%
None 24.16404884029687.ToString("F0")%
Position in Biotechnology
Healthcare · as of Mar 31, 2026TimesSquare Capital Management, LLC holds $398,607,399 across 16 Biotechnology names. IONS ranks #8 (5.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | INSM |
INSMED Inc
|
584,798 | $95,626,168 | |
| 2 | ARGX |
Argenx SE
|
83,117 | $60,696,189 | |
| 3 | MIRM |
Mirum Pharmaceuticals, Inc.
|
376,473 | $34,778,575 | |
| 4 | KRYS |
Krystal Biotech, Inc.
|
112,342 | $29,020,185 | |
| 5 | TARS |
Tarsus Pharmaceuticals, Inc.
|
388,590 | $27,259,588 | |
| 6 | NAMS |
NewAmsterdam Pharma Co N.V.
|
751,988 | $24,071,135 | |
| 7 | XENE |
Xenon Pharmaceuticals Inc.
|
359,293 | $20,892,887 | |
| 8 | IONS |
Ionis Pharmaceuticals Inc
This page
|
275,674 | $20,700,360 |
All Filings in IONS
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $20,700,360 | 275,674 | Shares | Sole | 2026-05-07 | |
| No filing history on record for this holder in this stock. | ||||||