Costello Asset Management’s Arrowhead Research ARWR Stock Holding History

Costello Asset 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	$32.6K	Hold	400	–	–	0.01%	326
2026 Q1	$25.1K	Hold	400	–	–	0.01%	347
2025 Q4	$26.6K	Sell	400 -540	-57%	-$26.5K	0.01%	334
2025 Q3	$32.4K	Hold	940	–	–	0.01%	302
2025 Q2	$14.9K	Sell	940 -50	-5%	-$717	0.01%	421
2025 Q1	$12.6K	Hold	990	–	–	0.01%	428
2024 Q4	$18.6K	Hold	990	–	–	0.01%	126
2024 Q3	$19.2K	Hold	990	–	–	0.01%	126
2024 Q2	$25.7K	Hold	990	–	–	0.02%	104
2024 Q1	$28.3K	Hold	990	–	–	0.02%	111
2023 Q4	$30.3K	Hold	990	–	–	0.03%	108
2023 Q3	$26.6K	Hold	990	–	–	0.02%	107
2023 Q2	$35.3K	Hold	990	–	–	0.03%	99
2023 Q1	$25.1K	Hold	990	–	–	0.03%	114
2022 Q4	$40.2K	Hold	990	–	–	0.04%	100
2022 Q3	$33K	Hold	990	–	–	0.03%	103
2022 Q2	$35K	Hold	990	–	–	0.03%	106
2022 Q1	$46K	Hold	990	–	–	0.03%	111
2021 Q4	$66K	Buy	990 +190	+24%	+$13.1K	0.04%	99
2021 Q3	$50K	Hold	800	–	–	0.03%	110
2021 Q2	$66K	Hold	800	–	–	0.04%	97
2021 Q1	$53K	Hold	800	–	–	0.04%	111
2020 Q4	$61K	Buy	800 +300	+60%	+$19.2K	0.05%	99
2020 Q3	$22K	Buy	500 +150	+43%	+$6.47K	0.02%	127
2020 Q2	$15K	Buy	+350	New	+$12.4K	0.01%	136

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

Costello Asset Management's ARWR Position: Q2 2026 in Review

Costello Asset Management held its Arrowhead Research (ARWR) position steady in Q2 2026 at 400 shares worth $32.6K. The position accounts for 0.01% of the portfolio, ranked #326.

Costello Asset Management first reported a position in ARWR in Q2 2020 and has held it in 25 quarters since. The position peaked at $66K in Q4 2021. 501 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

Costello Asset Management held 400 shares of Arrowhead Research worth $32.6K as of Q2 2026.
Costello Asset Management left its Arrowhead Research share count unchanged in Q2 2026.
Arrowhead Research made up 0.01% of Costello Asset Management's portfolio in Q2 2026, its #326 holding.
Costello Asset Management first reported a position in Arrowhead Research in Q2 2020 and has held it in 25 quarters since.
Costello Asset Management's Arrowhead Research position peaked at $66K in Q4 2021.
501 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Costello Asset Management's 13F filing for Q2 2026, filed 28 Jul 2026.