Hood River Capital Management’s Arrowhead Research ARWR Stock Holding History

Hood River Capital Management’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	$91.4M	Buy	1,120,747 +64,213	+6%	+$4.74M	0.66%	50
2026 Q1	$66.2M	Buy	+1,056,534	New	+$66.9M	0.66%	51
2023 Q1	–	Sell	-373,254	Closed	-$15.1M	–	116
2022 Q4	$15.1M	Buy	373,254 +1,631	+0.4%	+$54K	0.55%	59
2022 Q3	$12.3M	Buy	371,623 +8,244	+2%	+$333K	0.47%	67
2022 Q2	$12.8M	Buy	363,379 +18,294	+5%	+$688K	0.51%	66
2022 Q1	$15.9M	Buy	345,085 +6,914	+2%	+$342K	0.53%	67
2021 Q4	$22.4M	Sell	338,171 -563	-0.2%	-$38.7K	0.67%	57
2021 Q3	$21.1M	Sell	338,734 -13,355	-4%	-$865K	0.65%	58
2021 Q2	$29.2M	Sell	352,089 -4,993	-1%	-$372K	0.87%	47
2021 Q1	$23.7M	Sell	357,082 -36,181	-9%	-$2.81M	0.76%	51
2020 Q4	$30.2M	Buy	393,263 +8,004	+2%	+$512K	1%	44
2020 Q3	$16.6M	Sell	385,259 -38,869	-9%	-$1.68M	0.72%	53
2020 Q2	$18.3M	Buy	+424,128	New	+$15M	0.82%	48
2014 Q2	–	Sell	-163,930	Closed	-$2.69M	–	84
2014 Q1	$2.69M	Buy	+163,930	New	+$2.88M	0.36%	79

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

Hood River Capital Management's ARWR Position: Q2 2026 in Review

Hood River Capital Management increased its Arrowhead Research (ARWR) stake by 6.1% in Q2 2026, buying an estimated $4.74M and bringing the position to 1,120,747 shares worth $91.4M. The position accounts for 0.66% of the portfolio, ranked #50.

Hood River Capital Management first reported a position in ARWR in Q1 2014 and has held it in 14 quarters since. 501 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

Hood River Capital Management held 1,120,747 shares of Arrowhead Research worth $91.4M as of Q2 2026.
Hood River Capital Management bought 64,213 Arrowhead Research shares in Q2 2026, an estimated $4.74M.
Arrowhead Research made up 0.66% of Hood River Capital Management's portfolio in Q2 2026, its #50 holding.
Hood River Capital Management first reported a position in Arrowhead Research in Q1 2014 and has held it in 14 quarters since.
501 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

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