BlackRock’s Ionis Pharmaceuticals IONS Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $849M | Buy |
10,704,660
+262,184
| +3% | +$19.7M | 0.01% | 862 |
|
|
2026
Q1 | $784M | Sell |
10,442,476
-205,387
| -2% | -$16.2M | 0.01% | 820 |
|
|
2025
Q4 | $842M | Buy |
10,647,863
+199,923
| +2% | +$15.1M | 0.01% | 770 |
|
|
2025
Q3 | $684M | Sell |
10,447,940
-448,997
| -4% | -$21.9M | 0.01% | 883 |
|
|
2025
Q2 | $431M | Sell |
10,896,937
-367,505
| -3% | -$12M | 0.01% | 1156 |
|
|
2025
Q1 | $340M | Sell |
11,264,442
-401,106
| -3% | -$13.1M | 0.01% | 1265 |
|
|
2024
Q4 | $408M | Buy |
11,665,548
+852,525
| +8% | +$31.9M | 0.01% | 1212 |
|
|
2024
Q3 | $433M | Buy |
10,813,023
+491,993
| +5% | +$22.9M | 0.01% | 1181 |
|
|
2024
Q2 | $492M | Buy |
10,321,030
+549,139
| +6% | +$22.5M | 0.01% | 1018 |
|
|
2024
Q1 | $424M | Buy |
9,771,891
+714,361
| +8% | +$34.1M | 0.01% | 1151 |
|
|
2023
Q4 | $458M | Sell |
9,057,530
-57,097
| -0.6% | -$2.73M | 0.01% | 1079 |
|
|
2023
Q3 | $413M | Sell |
9,114,627
-21,547
| -0.2% | -$889K | 0.01% | 1034 |
|
|
2023
Q2 | $375M | Buy |
9,136,174
+153,928
| +2% | +$5.92M | 0.01% | 1133 |
|
|
2023
Q1 | $321M | Sell |
8,982,246
-97,311
| -1% | -$3.65M | 0.01% | 1218 |
|
|
2022
Q4 | $343M | Buy |
9,079,557
+143,495
| +2% | +$6.04M | 0.01% | 1151 |
|
|
2022
Q3 | $395M | Buy |
8,936,062
+104,672
| +1% | +$4.41M | 0.01% | 970 |
|
|
2022
Q2 | $327M | Buy |
8,831,390
+387,547
| +5% | +$14.6M | 0.01% | 1159 |
|
|
2022
Q1 | $313M | Sell |
8,443,843
-95,439
| -1% | -$3.12M | 0.01% | 1327 |
|
|
2021
Q4 | $260M | Buy |
8,539,282
+419,429
| +5% | +$13.2M | 0.01% | 1539 |
|
|
2021
Q3 | $272M | Sell |
8,119,853
-59,813
| -0.7% | -$2.25M | 0.01% | 1491 |
|
|
2021
Q2 | $326M | Sell |
8,179,666
-1,628,896
| -17% | -$63.8M | 0.01% | 1408 |
|
|
2021
Q1 | $441M | Buy |
9,808,562
+58,060
| +0.6% | +$3.24M | 0.01% | 1106 |
|
|
2020
Q4 | $551M | Buy |
9,750,502
+1,285,095
| +15% | +$64M | 0.02% | 831 |
|
|
2020
Q3 | $402M | Sell |
8,465,407
-185,321
| -2% | -$10.3M | 0.01% | 879 |
|
|
2020
Q2 | $510M | Buy |
8,650,728
+482,788
| +6% | +$26.9M | 0.02% | 699 |
|
|
2020
Q1 | $386M | Sell |
8,167,940
-234,449
| -3% | -$13.1M | 0.02% | 752 |
|
|
2019
Q4 | $508M | Buy |
8,402,389
+51,590
| +0.6% | +$3.07M | 0.02% | 797 |
|
|
2019
Q3 | $500M | Sell |
8,350,799
-451,777
| -5% | -$29.4M | 0.02% | 751 |
|
|
2019
Q2 | $566M | Buy |
8,802,576
+1,181,004
| +15% | +$83.5M | 0.02% | 676 |
|
|
2019
Q1 | $619M | Sell |
7,621,572
-54,685
| -0.7% | -$3.53M | 0.03% | 617 |
|
|
2018
Q4 | $415M | Buy |
7,676,257
+213,000
| +3% | +$10.9M | 0.02% | 752 |
|
|
2018
Q3 | $385M | Buy |
7,463,257
+408,678
| +6% | +$19.2M | 0.02% | 957 |
|
|
2018
Q2 | $294M | Buy |
7,054,579
+124,233
| +2% | +$5.51M | 0.01% | 1128 |
|
|
2018
Q1 | $305M | Sell |
6,930,346
-42,260
| -0.6% | -$2.15M | 0.01% | 1060 |
|
|
2017
Q4 | $351M | Sell |
6,972,606
-30,885
| -0.4% | -$1.69M | 0.02% | 948 |
|
|
2017
Q3 | $355M | Buy |
7,003,491
+179,504
| +3% | +$9.4M | 0.02% | 890 |
|
|
2017
Q2 | $347M | Buy |
6,823,987
+264,179
| +4% | +$12.3M | 0.02% | 869 |
|
|
2017
Q1 | $264M | Buy |
6,559,808
+6,542,394
| +37,570% | +$294M | 0.01% | 1066 |
|
|
2016
Q4 | $833K | Sell |
17,414
-1,541
| -8% | -$61K | ﹤0.01% | 1552 |
|
|
2016
Q3 | $695K | Sell |
18,955
-82,238
| -81% | -$2.57M | ﹤0.01% | 1626 |
|
|
2016
Q2 | $2.36M | Sell |
101,193
-75,463
| -43% | -$2.43M | ﹤0.01% | 1095 |
|
|
2016
Q1 | $7.16M | Sell |
176,656
-10,553
| -6% | -$429K | 0.01% | 770 |
|
|
2015
Q4 | $11.6M | Buy |
187,209
+63,388
| +51% | +$3.42M | 0.02% | 646 |
|
|
2015
Q3 | $5M | Sell |
123,821
-34,154
| -22% | -$1.77M | 0.01% | 784 |
|
|
2015
Q2 | $9.09M | Sell |
157,975
-113,103
| -42% | -$7.19M | 0.01% | 691 |
|
|
2015
Q1 | $17.3M | Buy |
271,078
+114,013
| +73% | +$7.74M | 0.02% | 557 |
|
|
2014
Q4 | $9.7M | Buy |
157,065
+153,700
| +4,568% | +$7.58M | 0.01% | 682 |
|
|
2014
Q3 | $130K | Sell |
3,365
-1,570
| -32% | -$55.6K | ﹤0.01% | 1639 |
|
|
2014
Q2 | $170K | Sell |
4,935
-78,545
| -94% | -$2.47M | ﹤0.01% | 1575 |
|
|
2014
Q1 | $3.61M | Sell |
83,480
-37,444
| -31% | -$1.82M | 0.01% | 912 |
|
|
2013
Q4 | $4.82M | Buy |
120,924
+117,387
| +3,319% | +$4.18M | 0.01% | 841 |
|
|
2013
Q3 | $133K | Hold |
3,537
| – | – | ﹤0.01% | 1594 |
|
|
2013
Q2 | $95K | Buy |
+3,537
| New | +$75.2K | ﹤0.01% | 1677 |
|
Other funds holding IONS
BlackRock's IONS Position: Q2 2026 in Review
BlackRock increased its Ionis Pharmaceuticals (IONS) stake by 2.5% in Q2 2026, buying an estimated $19.7M and bringing the position to 10,704,660 shares worth $849M. The position accounts for 0.01% of the portfolio, ranked #862.
BlackRock first reported a position in IONS in Q2 2013 and has held it in 53 quarters since. 513 funds tracked by Wall St. Rank hold IONS as of Q2 2026.
- BlackRock held 10,704,660 shares of Ionis Pharmaceuticals worth $849M as of Q2 2026.
- BlackRock bought 262,184 Ionis Pharmaceuticals shares in Q2 2026, an estimated $19.7M.
- Ionis Pharmaceuticals made up 0.01% of BlackRock's portfolio in Q2 2026, its #862 holding.
- BlackRock first reported a position in Ionis Pharmaceuticals in Q2 2013 and has held it in 53 quarters since.
- 513 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.
Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.