Position in IONS
as of Mar 31, 2026
· filed May 7, 2026
Position Value
$2,802,809
-$189,210 QoQ
Shares Held
37,326
-1.3% QoQ
Ownership
0.023%
of shares outstanding
% of Portfolio
0.16%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 96.27069602957724.ToString("F0")%
Shared 0.ToString("F0")%
None 3.7293039704227615.ToString("F0")%
Common Shares in IONS Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026GRANDFIELD & DODD, LLC holds $47,624,275 across 12 Biotechnology names. IONS ranks #3 (5.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | REGN |
Regeneron Pharmaceuticals, Inc.
|
36,415 | $28,135,685 | |
| 2 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
21,704 | $9,691,704 | |
| 3 | IONS |
Ionis Pharmaceuticals Inc
This page
|
37,326 | $2,802,809 | |
| 4 | INCY |
Incyte Corp
|
20,885 | $1,965,696 | |
| 5 | EXEL |
Exelixis, Inc.
|
26,439 | $1,133,968 | |
| 6 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
3,081 | $1,019,410 | |
| 7 | BMRN |
Biomarin Pharmaceutical Inc
|
17,861 | $1,008,967 | |
| 8 | GMAB |
Genmab A/S
|
37,163 | $997,083 |
All Filings in IONS
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $2,802,809 | 37,326 | Shares | Sole | 2026-05-07 | |
| 2025-12-31 | $2,992,019 | 37,821 | Shares | Sole | 2026-02-10 | |
| 2025-09-30 | $2,464,698 | 37,675 | Shares | Sole | 2025-10-30 | |
| 2025-06-30 | $1,470,957 | 37,230 | Shares | Sole | 2025-08-08 | |
| 2025-03-31 | $1,139,249 | 37,761 | Shares | Sole | 2025-05-02 | |
| 2024-12-31 | $1,254,609 | 35,887 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $1,394,608 | 34,813 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $1,622,965 | 34,053 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $1,464,102 | 33,774 | Shares | Sole | 2024-05-06 | |
| 2023-12-31 | $1,674,731 | 33,104 | Shares | Sole | 2024-01-31 | |
| 2023-09-30 | $1,490,620 | 32,862 | Shares | Sole | 2023-10-26 | |
| 2023-06-30 | $1,340,819 | 32,679 | Shares | Sole | 2023-08-08 | |
| 2023-03-31 | $1,153,830 | 32,284 | Shares | Sole | 2023-04-28 | |
| 2022-12-31 | $1,188,772 | 31,474 | Shares | Sole | 2023-01-20 | |
| 2022-09-30 | $1,285,810 | 29,071 | Shares | Sole | 2022-11-04 | |
| 2022-06-30 | $1,046,777 | 28,276 | Shares | Sole | 2022-08-01 | |
| 2022-03-31 | $1,037,157 | 28,001 | Shares | Sole | 2022-04-19 | |
| 2021-12-31 | $814,641 | 26,771 | Shares | Sole | 2022-02-08 | |
| 2021-09-30 | $727,516 | 21,691 | Shares | Sole | 2021-10-28 | |
| 2021-06-30 | $839,804 | 21,053 | Shares | Sole | 2021-07-28 | |
| 2021-03-31 | $915,070 | 20,353 | Shares | Sole | 2021-04-22 | |
| 2020-12-31 | $1,110,558 | 19,642 | Shares | Sole | 2021-01-29 | |
| 2020-09-30 | $903,305 | 19,037 | Shares | Sole | 2020-11-03 | |
| 2020-06-30 | $1,102,610 | 18,701 | Shares | Sole | 2020-07-24 | |
| 2020-03-31 | $819,646 | 17,336 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||