IONIS PHARMACEUTICALS INC

Ticker: IONS CUSIP: 462222100 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 1,063,327 Value ($000) $84,120 Avg Close $75.30 Range $64.93 - $83.61
Q3 2025
Shares 630,136 Value ($000) $41,223 Avg Close $48.82 Range $39.72 - $65.55
Q2 2022
Shares 41,104 Value ($000) $1,522 Avg Close $37.71 Range $31.46 - $44.42
Q3 2021
Shares 41,100 Value ($000) $1,378 Avg Close $37.68 Range $33.52 - $40.99
Q2 2021
Shares 92,900 Value ($000) $3,706 Avg Close $39.17 Range $34.43 - $47.87
Q3 2020
Shares 26,000 Value ($000) $1,234 Avg Close $55.55 Range $47.19 - $63.49
Q4 2019
Shares 14,157 Value ($000) $855 Avg Close $59.58 Range $53.34 - $66.22
Q3 2019
Shares 16,000 Value ($000) $959 Avg Close $65.17 Range $58.48 - $73.09
Q1 2019
Shares 184,174 Value ($000) $14,949 Avg Close $64.51 Range $52.45 - $81.59