Israel Englander’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
$26.8M Buy
+329,337
New +$24.3M 0.01% 1357
2026
Q1
Sell
-45,018
Closed -$2.99M 5688
2025
Q4
$2.99M Sell
45,018
-64,789
-59% -$3.18M ﹤0.01% 3567
2025
Q3
$3.79M Sell
109,807
-59,234
-35% -$1.3M ﹤0.01% 3422
2025
Q2
$2.67M Sell
169,041
-521,755
-76% -$7.49M ﹤0.01% 3616
2025
Q1
$8.8M Sell
690,796
-223,754
-24% -$4.07M ﹤0.01% 2318
2024
Q4
$17.2M Buy
914,550
+268,946
+42% +$5.54M 0.01% 1648
2024
Q3
$12.5M Buy
645,604
+116,353
+22% +$2.84M 0.01% 1995
2024
Q2
$13.8M Buy
529,251
+202,280
+62% +$4.97M 0.01% 1813
2024
Q1
$9.35M Buy
+326,971
New +$10.5M ﹤0.01% 2252
2023
Q4
Sell
-308,613
Closed -$8.29M 6063
2023
Q3
$8.29M Sell
308,613
-19,780
-6% -$606K ﹤0.01% 2224
2023
Q2
$11.7M Sell
328,393
-641,001
-66% -$22.1M 0.01% 1856
2023
Q1
$24.6M Buy
969,394
+393,770
+68% +$12.4M 0.01% 1195
2022
Q4
$23.3M Buy
575,624
+496,910
+631% +$16.5M 0.01% 1322
2022
Q3
$2.6M Sell
78,714
-58,464
-43% -$2.36M ﹤0.01% 3509
2022
Q2
$4.83M Sell
137,178
-2,302
-2% -$86.6K ﹤0.01% 2847
2022
Q1
$6.42M Buy
139,480
+108,824
+355% +$5.39M ﹤0.01% 2659
2021
Q4
$2.03M Sell
30,656
-17,363
-36% -$1.19M ﹤0.01% 3769
2021
Q3
$3M Buy
48,019
+23,988
+100% +$1.55M ﹤0.01% 3441
2021
Q2
$1.99M Sell
24,031
-6,088
-20% -$453K ﹤0.01% 3974
2021
Q1
$2M Sell
30,119
-1,910
-6% -$148K ﹤0.01% 3534
2020
Q4
$2.46M Sell
32,029
-156,215
-83% -$9.99M ﹤0.01% 3076
2020
Q3
$8.11K Buy
+188,244
New +$8.12M 0.01% 1429
2020
Q1
Sell
-75,857
Closed -$4.81M 3820
2019
Q4
$4.81M Buy
75,857
+68,001
+866% +$3.37M 0.01% 1973
2019
Q3
$221K Sell
7,856
-405,433
-98% -$12M ﹤0.01% 3738
2019
Q2
$11M Sell
413,289
-530,546
-56% -$11.6M 0.02% 1178
2019
Q1
$17.3M Buy
943,835
+836,894
+783% +$13.8M 0.03% 894
2018
Q4
$1.33M Sell
106,941
-165,120
-61% -$2.26M ﹤0.01% 2444
2018
Q3
$5.21M Buy
+272,061
New +$4.46M 0.01% 1764
2018
Q2
Sell
-817,317
Closed -$5.89M 3775
2018
Q1
$5.89M Sell
817,317
-199,110
-20% -$1.23M 0.01% 1700
2017
Q4
$3.74M Sell
1,016,427
-255,711
-20% -$950K 0.01% 1900
2017
Q3
$5.51M Sell
1,272,138
-204,901
-14% -$488K 0.01% 1619
2017
Q2
$2.39M Buy
1,477,039
+992,709
+205% +$1.61M ﹤0.01% 1975
2017
Q1
$896K Sell
484,330
-692,963
-59% -$1.37M ﹤0.01% 2461
2016
Q4
$1.82M Buy
1,177,293
+1,143,673
+3,402% +$4.87M ﹤0.01% 1925
2016
Q3
$247K Buy
33,620
+4,109
+14% +$26.6K ﹤0.01% 2896
2016
Q2
$157K Buy
+29,511
New +$168K ﹤0.01% 2955
2016
Q1
Sell
-61,485
Closed -$378K 3246
2015
Q4
$378K Sell
61,485
-572,578
-90% -$3.25M ﹤0.01% 2792
2015
Q3
$3.65M Sell
634,063
-1,501,968
-70% -$9.44M 0.01% 1512
2015
Q2
$15.3M Sell
2,136,031
-69,326
-3% -$476K 0.03% 751
2015
Q1
$14.9M Buy
2,205,357
+1,337,982
+154% +$9.49M 0.03% 827
2014
Q4
$6.4M Buy
+867,375
New +$5.9M 0.01% 1228
2014
Q3
Sell
-1,248,503
Closed -$17.9M 3673
2014
Q2
$17.9M Sell
1,248,503
-976,672
-44% -$12.8M 0.05% 528
2014
Q1
$36.5M Buy
2,225,175
+1,362,316
+158% +$23.9M 0.11% 222
2013
Q4
$9.36M Buy
862,859
+700,970
+433% +$5.6M 0.03% 758
2013
Q3
$921K Buy
+161,889
New +$622K ﹤0.01% 2168

Other funds holding ARWR

Israel Englander's ARWR Position: Q2 2026 in Review

Israel Englander opened a new position in Arrowhead Research (ARWR) in Q2 2026: 329,337 shares worth $26.8M. The stake represents 0.01% of the portfolio and ranks #1357 among its holdings. This is a return to the name: Israel Englander previously reported a position in ARWR as recently as Q4 2025.

Israel Englander first reported a position in ARWR in Q3 2013 and has held it in 45 quarters since. The position peaked at $36.5M in Q1 2014. 498 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • Israel Englander held 329,337 shares of Arrowhead Research worth $26.8M as of Q2 2026.
  • Arrowhead Research was a new Israel Englander position in Q2 2026.
  • Arrowhead Research made up 0.01% of Israel Englander's portfolio in Q2 2026, its #1357 holding.
  • Israel Englander first reported a position in Arrowhead Research in Q3 2013 and has held it in 45 quarters since.
  • Israel Englander's Arrowhead Research position peaked at $36.5M in Q1 2014.
  • 498 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.