Israel Englander’s Arrowhead Research ARWR Stock Holding History

Israel Englander’s Portfolio ARWR Stock Details ARWR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$6.37M	Buy	+78,200	New	+$5.78M	﹤0.01%	2762
2021 Q3	–	Sell	-10,000	Closed	-$828K	–	6756
2021 Q2	$828K	Buy	+10,000	New	+$745K	﹤0.01%	4844
2021 Q1	–	Sell	-30,000	Closed	-$2.3M	–	5886
2020 Q4	$2.3M	Buy	+30,000	New	+$1.92M	﹤0.01%	3129
2020 Q3	–	Sell	-50,000	Closed	-$2.16M	–	4420
2020 Q2	$2.16M	Buy	+50,000	New	+$1.76M	﹤0.01%	2468
2019 Q3	–	Sell	-75,000	Closed	-$1.99M	–	4137
2019 Q2	$1.99M	Buy	+75,000	New	+$1.65M	﹤0.01%	2410
2014 Q3	–	Sell	-567,200	Closed	-$8.12M	–	3672
2014 Q2	$8.12M	Buy	567,200 +417,200	+278%	+$5.47M	0.02%	933
2014 Q1	$2.46M	Buy	+150,000	New	+$2.63M	0.01%	1631

Other funds holding ARWR

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

ACA

Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

FAM

Fred Alger Management New York $30B AUM 76.99% 1-Year Est. Return

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.