Winton Group’s Arrowhead Research ARWR Stock Holding History

Winton Group’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	$785K	Sell	9,630 -45,450	-83%	-$3.36M	0.03%	568
2026 Q1	$3.45M	Buy	55,080 +47,189	+598%	+$2.99M	0.12%	228
2025 Q4	$524K	Sell	7,891 -21,054	-73%	-$1.03M	0.02%	626
2025 Q3	$998K	Sell	28,945 -12,833	-31%	-$282K	0.04%	458
2025 Q2	$660K	Buy	+41,778	New	+$599K	0.03%	530
2021 Q4	–	Sell	-6,030	Closed	-$376K	–	1022
2021 Q3	$376K	Buy	6,030 +1,468	+32%	+$95K	0.02%	1000
2021 Q2	$378K	Buy	+4,562	New	+$340K	0.02%	1066
2020 Q1	–	Sell	-83,709	Closed	-$5.31M	–	1398
2019 Q4	$5.31M	Buy	+83,709	New	+$4.15M	0.07%	448
2019 Q3	–	Sell	-13,836	Closed	-$367K	–	1520
2019 Q2	$367K	Buy	+13,836	New	+$304K	0.01%	802
2019 Q1	–	Sell	-15,848	Closed	-$197K	–	1076
2018 Q4	$197K	Buy	+15,848	New	+$217K	﹤0.01%	813

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

Winton Group's ARWR Position: Q2 2026 in Review

Winton Group reduced its Arrowhead Research (ARWR) stake by 83% in Q2 2026, selling an estimated $3.36M and leaving 9,630 shares worth $785K. The position accounts for 0.03% of the portfolio, ranked #568.

Winton Group first reported a position in ARWR in Q4 2018 and has held it in 10 quarters since. The position peaked at $5.31M in Q4 2019. 500 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

Winton Group held 9,630 shares of Arrowhead Research worth $785K as of Q2 2026.
Winton Group sold 45,450 Arrowhead Research shares in Q2 2026, an estimated $3.36M.
Arrowhead Research made up 0.03% of Winton Group's portfolio in Q2 2026, its #568 holding.
Winton Group first reported a position in Arrowhead Research in Q4 2018 and has held it in 10 quarters since.
Winton Group's Arrowhead Research position peaked at $5.31M in Q4 2019.
500 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Winton Group's 13F filing for Q2 2026, filed 7 Aug 2026.