BlackRock’s Arrowhead Research ARWR Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $1.21B | Sell |
14,830,553
-3,330,966
| -18% | -$246M | 0.02% | 661 |
|
|
2026
Q1 | $1.14B | Sell |
18,161,519
-3,157,063
| -15% | -$200M | 0.02% | 627 |
|
|
2025
Q4 | $1.42B | Buy |
21,318,582
+1,093,757
| +5% | +$53.6M | 0.02% | 541 |
|
|
2025
Q3 | $698M | Buy |
20,224,825
+799,938
| +4% | +$17.6M | 0.01% | 869 |
|
|
2025
Q2 | $307M | Sell |
19,424,887
-501,267
| -3% | -$7.19M | 0.01% | 1353 |
|
|
2025
Q1 | $254M | Buy |
19,926,154
+3,748,154
| +23% | +$68.2M | 0.01% | 1458 |
|
|
2024
Q4 | $304M | Buy |
16,178,000
+342,088
| +2% | +$7.05M | 0.01% | 1411 |
|
|
2024
Q3 | $307M | Buy |
15,835,912
+152,706
| +1% | +$3.73M | 0.01% | 1402 |
|
|
2024
Q2 | $408M | Buy |
15,683,206
+336,569
| +2% | +$8.27M | 0.01% | 1138 |
|
|
2024
Q1 | $439M | Buy |
15,346,637
+2,042,880
| +15% | +$65.4M | 0.01% | 1131 |
|
|
2023
Q4 | $407M | Buy |
13,303,757
+464,263
| +4% | +$12.3M | 0.01% | 1159 |
|
|
2023
Q3 | $345M | Buy |
12,839,494
+28,336
| +0.2% | +$868K | 0.01% | 1175 |
|
|
2023
Q2 | $457M | Buy |
12,811,158
+100,357
| +0.8% | +$3.46M | 0.01% | 988 |
|
|
2023
Q1 | $323M | Sell |
12,710,801
-337
| -0% | -$10.6K | 0.01% | 1214 |
|
|
2022
Q4 | $516M | Buy |
12,711,138
+623,050
| +5% | +$20.6M | 0.02% | 858 |
|
|
2022
Q3 | $400M | Sell |
12,088,088
-196,385
| -2% | -$7.93M | 0.01% | 957 |
|
|
2022
Q2 | $433M | Buy |
12,284,473
+129,389
| +1% | +$4.87M | 0.01% | 951 |
|
|
2022
Q1 | $559M | Buy |
12,155,084
+147,021
| +1% | +$7.28M | 0.02% | 887 |
|
|
2021
Q4 | $796M | Buy |
12,008,063
+66,218
| +0.6% | +$4.55M | 0.02% | 709 |
|
|
2021
Q3 | $746M | Sell |
11,941,845
-207,658
| -2% | -$13.4M | 0.02% | 712 |
|
|
2021
Q2 | $1.01B | Sell |
12,149,503
-751,724
| -6% | -$56M | 0.03% | 597 |
|
|
2021
Q1 | $855M | Buy |
12,901,227
+338,095
| +3% | +$26.2M | 0.03% | 664 |
|
|
2020
Q4 | $964M | Buy |
12,563,132
+2,763
| +0% | +$177K | 0.03% | 547 |
|
|
2020
Q3 | $541M | Sell |
12,560,369
-394,559
| -3% | -$17M | 0.02% | 712 |
|
|
2020
Q2 | $560M | Buy |
12,954,928
+523,310
| +4% | +$18.5M | 0.02% | 642 |
|
|
2020
Q1 | $358M | Buy |
12,431,618
+70,660
| +0.6% | +$2.85M | 0.02% | 788 |
|
|
2019
Q4 | $784M | Sell |
12,360,958
-2,659,692
| -18% | -$132M | 0.03% | 566 |
|
|
2019
Q3 | $423M | Buy |
15,020,650
+178,684
| +1% | +$5.29M | 0.02% | 865 |
|
|
2019
Q2 | $393M | Buy |
14,841,966
+7,210,892
| +94% | +$158M | 0.02% | 921 |
|
|
2019
Q1 | $140M | Buy |
7,631,074
+446,453
| +6% | +$7.36M | 0.01% | 1666 |
|
|
2018
Q4 | $89.2M | Buy |
7,184,621
+92,117
| +1% | +$1.26M | ﹤0.01% | 1876 |
|
|
2018
Q3 | $136M | Buy |
7,092,504
+8,578
| +0.1% | +$141K | 0.01% | 1751 |
|
|
2018
Q2 | $96.3M | Buy |
7,083,926
+3,679,986
| +108% | +$34.4M | ﹤0.01% | 1958 |
|
|
2018
Q1 | $24.5M | Buy |
3,403,940
+655,112
| +24% | +$4.03M | ﹤0.01% | 2651 |
|
|
2017
Q4 | $10.1M | Sell |
2,748,828
-110,341
| -4% | -$410K | ﹤0.01% | 3142 |
|
|
2017
Q3 | $12.4M | Buy |
2,859,169
+394,562
| +16% | +$940K | ﹤0.01% | 3048 |
|
|
2017
Q2 | $3.99M | Sell |
2,464,607
-3,121,025
| -56% | -$5.05M | ﹤0.01% | 3528 |
|
|
2017
Q1 | $10.3M | Buy |
5,585,632
+5,580,506
| +108,867% | +$11.1M | ﹤0.01% | 3092 |
|
|
2016
Q4 | $8K | Sell |
5,126
-938
| -15% | -$4K | ﹤0.01% | 3433 |
|
|
2016
Q3 | $45K | Buy |
6,064
+607
| +11% | +$3.93K | ﹤0.01% | 3005 |
|
|
2016
Q2 | $29K | Buy |
5,457
+1,879
| +53% | +$10.7K | ﹤0.01% | 3147 |
|
|
2016
Q1 | $17K | Buy |
3,578
+2,380
| +199% | +$10K | ﹤0.01% | 2916 |
|
|
2015
Q4 | $7K | Sell |
1,198
-4,400
| -79% | -$24.9K | ﹤0.01% | 3025 |
|
|
2015
Q3 | $32K | Buy |
5,598
+4,400
| +367% | +$27.7K | ﹤0.01% | 2116 |
|
|
2015
Q2 | $9K | Sell |
1,198
-234
| -16% | -$1.61K | ﹤0.01% | 2852 |
|
|
2015
Q1 | $10K | Hold |
1,432
| – | – | ﹤0.01% | 2724 |
|
|
2014
Q4 | $11K | Buy |
1,432
+224
| +19% | +$1.52K | ﹤0.01% | 2693 |
|
|
2014
Q3 | $18K | Hold |
1,208
| – | – | ﹤0.01% | 2388 |
|
|
2014
Q2 | $17K | Buy |
+1,208
| New | +$15.8K | ﹤0.01% | 2463 |
|
Other funds holding ARWR
ACA
FAM
BBA
BlackRock's ARWR Position: Q2 2026 in Review
BlackRock reduced its Arrowhead Research (ARWR) stake by 18% in Q2 2026, selling an estimated $246M and leaving 14,830,553 shares worth $1.21B. The position accounts for 0.02% of the portfolio, ranked #661.
BlackRock first reported a position in ARWR in Q2 2014 and has held it in 49 quarters since. The position peaked at $1.42B in Q4 2025. 499 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.
- BlackRock held 14,830,553 shares of Arrowhead Research worth $1.21B as of Q2 2026.
- BlackRock sold 3,330,966 Arrowhead Research shares in Q2 2026, an estimated $246M.
- Arrowhead Research made up 0.02% of BlackRock's portfolio in Q2 2026, its #661 holding.
- BlackRock first reported a position in Arrowhead Research in Q2 2014 and has held it in 49 quarters since.
- BlackRock's Arrowhead Research position peaked at $1.42B in Q4 2025.
- 499 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.
Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.