Driehaus Capital Management’s Arrowhead Research ARWR Stock Holding History

Driehaus 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 Q1	$74.6M	Sell	1,190,335 -579,005	-33%	-$36.7M	0.55%	47
2025 Q4	$117M	Sell	1,769,340 -330,058	-16%	-$16.2M	0.8%	26
2025 Q3	$72.4M	Buy	+2,099,398	New	+$46.2M	0.52%	58
2024 Q1	–	Sell	-29,493	Closed	-$902K	–	391
2023 Q4	$902K	Hold	29,493	–	–	0.01%	319
2023 Q3	$792K	Sell	29,493 -478,168	-94%	-$14.6M	0.01%	335
2023 Q2	$18.1M	Buy	+507,661	New	+$17.5M	0.23%	141
2014 Q4	–	Sell	-190,762	Closed	-$2.82M	–	496
2014 Q3	$2.82M	Sell	190,762 -28,958	-13%	-$396K	0.11%	250
2014 Q2	$3.14M	Buy	219,720 +46,316	+27%	+$607K	0.1%	272
2014 Q1	$2.85M	Buy	173,404 +1,747	+1%	+$30.7K	0.09%	270
2013 Q4	$1.86M	Buy	+171,657	New	+$1.37M	0.07%	327

Other funds holding ARWR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

ACA

Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

FAM

Fred Alger Management New York $22.8B AUM 64.63% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

VPC

Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return

Driehaus Capital Management's ARWR Position: Q1 2026 in Review

Driehaus Capital Management reduced its Arrowhead Research (ARWR) stake by 33% in Q1 2026, selling an estimated $36.7M and leaving 1,190,335 shares worth $74.6M. The position accounts for 0.55% of the portfolio, ranked #47.

Driehaus Capital Management first reported a position in ARWR in Q4 2013 and has held it in 10 quarters since. The position peaked at $117M in Q4 2025. 436 funds tracked by Wall St. Rank hold ARWR as of Q1 2026.

Driehaus Capital Management held 1,190,335 shares of Arrowhead Research worth $74.6M as of Q1 2026.
Driehaus Capital Management sold 579,005 Arrowhead Research shares in Q1 2026, an estimated $36.7M.
Arrowhead Research made up 0.55% of Driehaus Capital Management's portfolio in Q1 2026, its #47 holding.
Driehaus Capital Management first reported a position in Arrowhead Research in Q4 2013 and has held it in 10 quarters since.
Driehaus Capital Management's Arrowhead Research position peaked at $117M in Q4 2025.
436 funds tracked by Wall St. Rank held Arrowhead Research as of Q1 2026.

Based on Driehaus Capital Management's 13F filing for Q1 2026, filed 15 May 2026.