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Equibles

GRANDFIELD & DODD, LLC

Position in IONS — Ionis Pharmaceuticals Inc

CIK 1308016 NEW YORK, NY
Back to IONS Full portfolio

Position in IONS

as of Jun 30, 2026 · filed Aug 7, 2026
Position Value
$2,939,835
+$137,026 QoQ
Shares Held
37,077
-0.7% QoQ
Ownership
0.022%
of shares outstanding
% of Portfolio
0.16%
of 13F equity value
Holder Rank
#188
of 514 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 96% Shared 0% None 4%

Common Shares in IONS Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

GRANDFIELD & DODD, LLC holds $46,143,038 across 12 Biotechnology names. IONS ranks #3 (6.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 REGN
Regeneron Pharmaceuticals, Inc.
 36,628 $22,839,023
2 VRTX
Vertex Pharmaceuticals Inc / Ma
 24,838 $12,337,779
3 IONS
Ionis Pharmaceuticals Inc
This page 		37,077 $2,939,835
4 INCY
Incyte Corp
 20,822 $2,360,381
5 EXEL
Exelixis, Inc.
 27,109 $1,475,000
6 BMRN
Biomarin Pharmaceutical Inc
 18,243 $1,043,864
7 GMAB
Genmab A/S
 37,633 $1,033,778
8 ALNY
Alnylam Pharmaceuticals, Inc.
 3,204 $964,500

All Filings in IONS

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,939,835 37,077
2026-03-31 $2,802,809 37,326
2025-12-31 $2,992,019 37,821
2025-09-30 $2,464,698 37,675
2025-06-30 $1,470,957 37,230
2025-03-31 $1,139,249 37,761
2024-12-31 $1,254,609 35,887
2024-09-30 $1,394,608 34,813
2024-06-30 $1,622,965 34,053
2024-03-31 $1,464,102 33,774
2023-12-31 $1,674,731 33,104
2023-09-30 $1,490,620 32,862
2023-06-30 $1,340,819 32,679
2023-03-31 $1,153,830 32,284
2022-12-31 $1,188,772 31,474
2022-09-30 $1,285,810 29,071
2022-06-30 $1,046,777 28,276
2022-03-31 $1,037,157 28,001
2021-12-31 $814,641 26,771
2021-09-30 $727,516 21,691
2021-06-30 $839,804 21,053
2021-03-31 $915,070 20,353
2020-12-31 $1,110,558 19,642
2020-09-30 $903,305 19,037
2020-06-30 $1,102,610 18,701
2020-03-31 $819,646 17,336