PRICE T ROWE ASSOCIATES INC /MD/
Position in IONS — Ionis Pharmaceuticals Inc
CIK 80255
BALTIMORE, MD
Position in IONS
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$252,499,004
+$25,332,908 QoQ
Shares Held
3,184,500
+5.3% QoQ
Ownership
1.92%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#12
of 513 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 99%
Shared 0%
None 1%
Common Shares in IONS 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. IONS ranks #20 (1.4% 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 IONS
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $252,499,004 | 3,184,500 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $227,166,096 | 3,025,251 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $236,368,022 | 2,987,840 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $178,575,992 | 2,729,685 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $123,511,143 | 3,126,073 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $98,506,075 | 3,265,034 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $133,789,787 | 3,826,939 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $168,659,489 | 4,210,172 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $187,509,261 | 3,934,311 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $152,687,499 | 3,522,203 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $215,264,193 | 4,255,074 | Shares | Sole | 2024-02-16 | |
| 2023-09-30 | $170,462,743 | 3,757,997 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $157,385,622 | 3,835,867 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $140,635,148 | 3,934,951 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $162,125,118 | 4,292,431 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $212,177,147 | 4,797,132 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $557,374,822 | 15,056,046 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $531,541,038 | 14,350,460 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $380,079,220 | 12,490,280 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $393,669,746 | 11,737,321 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $489,004,609 | 12,258,827 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $565,599,317 | 12,580,056 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $741,520,234 | 13,114,967 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $509,234,586 | 10,732,025 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $507,725,903 | 8,611,362 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $177,888,399 | 3,762,445 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||