Position in IONS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$479,961,458
-$15,292,847 QoQ
Shares Held
6,391,816
+2.1% QoQ
Ownership
3.87%
of shares outstanding
% of Portfolio
0.09%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
17 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 93.94028238610123.ToString("F0")%
None 6.059717613898774.ToString("F0")%
Common Shares in IONS Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026WELLINGTON MANAGEMENT GROUP LLP holds $14,419,413,771 across 180 Biotechnology names. IONS ranks #7 (3.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
3,212,589 | $1,434,549,489 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,837,459 | $1,419,694,318 | |
| 3 | ARGX |
Argenx SE
|
1,021,457 | $745,918,971 | |
| 4 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,935,925 | $640,539,501 | |
| 5 | RVMD |
Revolution Medicines, Inc.
|
6,027,819 | $586,205,394 | |
| 6 | CYTK |
Cytokinetics Inc
|
8,009,489 | $527,905,416 | |
| 7 | IONS |
Ionis Pharmaceuticals Inc
This page
|
6,391,816 | $479,961,458 | |
| 8 | ASND |
Ascendis Pharma A/S
|
1,757,633 | $402,023,391 |
All Filings in IONS
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17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $479,961,458 | 6,391,816 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $495,254,305 | 6,260,325 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $431,040,011 | 6,588,811 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $250,721,607 | 6,345,776 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $253,923,418 | 8,416,421 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $303,178,291 | 8,672,148 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $349,955,625 | 8,735,787 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $313,069,387 | 6,568,808 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $246,908,549 | 5,695,699 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $233,572,915 | 4,616,978 | Shares | Defined | 2024-02-12 | |
| 2023-09-30 | $79,861,948 | 1,760,625 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $37,531,083 | 914,723 | Shares | Defined | 2023-08-14 | |
| 2021-12-31 | $399,666 | 13,134 | Shares | Defined | 2022-02-11 | |
| 2021-06-30 | $235,789 | 5,911 | Shares | Defined | 2021-08-16 | |
| 2020-09-30 | $41,233,716 | 868,993 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $102,140,179 | 1,732,364 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $188,421,057 | 3,985,217 | Shares | Defined | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||