PRICE T ROWE ASSOCIATES INC /MD/
Position in IONS — Ionis Pharmaceuticals Inc
CIK 80255
BALTIMORE, MD
Position in IONS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$227,166,096
-$9,201,926 QoQ
Shares Held
3,025,251
+1.3% QoQ
Ownership
1.83%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 98.45579755200478.ToString("F0")%
Shared 0.ToString("F0")%
None 1.544202447995224.ToString("F0")%
Common Shares in IONS Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026PRICE T ROWE ASSOCIATES INC /MD/ holds $14,300,473,279 across 256 Biotechnology names. IONS ranks #12 (1.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ARGX |
Argenx SE
|
3,374,955 | $2,464,560,888 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
2,177,527 | $1,682,444,460 | |
| 3 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
1,760,122 | $785,964,877 | |
| 4 | INSM |
INSMED Inc
|
3,092,807 | $505,735,799 | |
| 5 | KYMR |
Kymera Therapeutics, Inc.
|
6,060,847 | $504,807,946 | |
| 6 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,432,748 | $474,053,330 | |
| 7 | ASND |
Ascendis Pharma A/S
|
1,530,345 | $350,035,811 | |
| 8 | RVMD |
Revolution Medicines, Inc.
|
3,232,213 | $314,332,713 |
All Filings in IONS
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 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. | ||||||