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RENAISSANCE TECHNOLOGIES LLC

Position in IONS — Ionis Pharmaceuticals Inc

CIK 1037389 NEW YORK, NY

Position in IONS

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$44,355,936
+$21,412,262 QoQ
Shares Held
559,414
+83.1% QoQ
Ownership
0.337%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
#52
of 514 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in IONS Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

RENAISSANCE TECHNOLOGIES LLC holds $3,950,489,724 across 311 Biotechnology names. IONS ranks #15 (1.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in IONS

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $44,355,936 559,414
2026-03-31 $22,943,674 305,549
2025-12-31 $17,689,549 223,607
2025-09-30 $31,840,829 486,714
2025-06-30 $10,695,910 270,714
2025-03-31 $4,631,517 153,514
2024-12-31 $7,184,769 205,514
2024-09-30 $7,631,990 190,514
2024-06-30 $11,891,837 249,514
2024-03-31 $7,790,601 179,714
2023-12-31 $5,687,024 112,414
2023-09-30 $12,238,128 269,800
2023-06-30 $15,201,615 370,500
2023-03-31 $22,741,862 636,314
2022-12-31 $44,523,804 1,178,814
2022-09-30 $38,378,990 867,714
2022-06-30 $22,760,414 614,814
2022-03-31 $4,997,214 134,914
2021-12-31 $7,023,670 230,814
2021-09-30 $3,277,327 97,714
2021-06-30 $30,971,154 776,414
2021-03-31 $26,410,133 587,414
2020-12-31 $42,141,975 745,348
2020-09-30 $69,617,074 1,467,167
2020-06-30 $103,349,038 1,752,867
2020-03-31 $79,828,072 1,688,411