ClearBridge Investments
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ClearBridge Investments’s Ionis Pharmaceuticals IONS Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q1
Sell
-1,618,220
Closed -$56.6M 724
2024
Q4
$56.6M Sell
1,618,220
-84,173
-5% -$2.94M 0.05% 302
2024
Q3
$68.2M Sell
1,702,393
-457,877
-21% -$18.3M 0.05% 286
2024
Q2
$103M Sell
2,160,270
-2,305,921
-52% -$110M 0.08% 225
2024
Q1
$194M Sell
4,466,191
-241,289
-5% -$10.5M 0.15% 147
2023
Q4
$238M Sell
4,707,480
-133,215
-3% -$6.74M 0.2% 123
2023
Q3
$220M Sell
4,840,695
-346,509
-7% -$15.7M 0.21% 118
2023
Q2
$213M Sell
5,187,204
-204,377
-4% -$8.39M 0.19% 129
2023
Q1
$193M Sell
5,391,581
-34,061
-0.6% -$1.22M 0.18% 133
2022
Q4
$205M Sell
5,425,642
-348,250
-6% -$13.2M 0.2% 121
2022
Q3
$255M Sell
5,773,892
-231,926
-4% -$10.3M 0.26% 103
2022
Q2
$222M Sell
6,005,818
-470,215
-7% -$17.4M 0.21% 119
2022
Q1
$240M Buy
6,476,033
+593,051
+10% +$22M 0.18% 133
2021
Q4
$179M Sell
5,882,982
-1,444,340
-20% -$44M 0.12% 161
2021
Q3
$246M Buy
7,327,322
+511,721
+8% +$17.2M 0.18% 129
2021
Q2
$272M Sell
6,815,601
-587,366
-8% -$23.4M 0.19% 118
2021
Q1
$333M Buy
7,402,967
+487,820
+7% +$21.9M 0.25% 100
2020
Q4
$391M Sell
6,915,147
-358,218
-5% -$20.3M 0.3% 90
2020
Q3
$345M Sell
7,273,365
-388,859
-5% -$18.5M 0.3% 87
2020
Q2
$452M Sell
7,662,224
-372,040
-5% -$21.9M 0.41% 68
2020
Q1
$380M Buy
8,034,264
+86,688
+1% +$4.1M 0.41% 69
2019
Q4
$484M Sell
7,947,576
-1,343,348
-14% -$81.8M 0.4% 74
2019
Q3
$557M Sell
9,290,924
-211,108
-2% -$12.6M 0.49% 64
2019
Q2
$611M Buy
9,502,032
+3,722
+0% +$239K 0.53% 53
2019
Q1
$771M Sell
9,498,310
-882,009
-8% -$71.6M 0.68% 35
2018
Q4
$561M Buy
10,380,319
+143,380
+1% +$7.75M 0.57% 44
2018
Q3
$528M Sell
10,236,939
-583,181
-5% -$30.1M 0.45% 63
2018
Q2
$451M Sell
10,820,120
-99,989
-0.9% -$4.17M 0.37% 84
2018
Q1
$481M Sell
10,920,109
-64,709
-0.6% -$2.85M 0.45% 69
2017
Q4
$553M Sell
10,984,818
-455,033
-4% -$22.9M 0.51% 57
2017
Q3
$580M Sell
11,439,851
-388,030
-3% -$19.7M 0.56% 45
2017
Q2
$602M Sell
11,827,881
-45,298
-0.4% -$2.3M 0.59% 39
2017
Q1
$477M Sell
11,873,179
-179,404
-1% -$7.21M 0.48% 58
2016
Q4
$576M Buy
12,052,583
+1,224,208
+11% +$58.6M 0.63% 37
2016
Q3
$397M Sell
10,828,375
-438,752
-4% -$16.1M 0.45% 60
2016
Q2
$262M Buy
11,267,127
+142,579
+1% +$3.32M 0.31% 93
2016
Q1
$451M Buy
11,124,548
+1,649,844
+17% +$66.8M 0.54% 49
2015
Q4
$587M Buy
9,474,704
+89,624
+1% +$5.55M 0.68% 31
2015
Q3
$379M Sell
9,385,080
-37,922
-0.4% -$1.53M 0.45% 58
2015
Q2
$542M Sell
9,423,002
-163,155
-2% -$9.39M 0.57% 40
2015
Q1
$610M Buy
9,586,157
+551,637
+6% +$35.1M 0.63% 36
2014
Q4
$558M Buy
9,034,520
+45,764
+0.5% +$2.83M 0.59% 38
2014
Q3
$349M Buy
8,988,756
+749,398
+9% +$29.1M 0.38% 78
2014
Q2
$284M Buy
8,239,358
+895,096
+12% +$30.8M 0.32% 97
2014
Q1
$317M Buy
7,344,262
+146,601
+2% +$6.33M 0.38% 80
2013
Q4
$287M Sell
7,197,661
-17,907
-0.2% -$713K 0.36% 87
2013
Q3
$271M Buy
7,215,568
+393,043
+6% +$14.8M 0.38% 84
2013
Q2
$183M Buy
+6,822,525
New +$183M 0.28% 106