Citadel Advisors’s Arrowhead Research ARWR Stock Holding History

Citadel Advisors’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	$4.09M	Sell	65,300 -1,400	-2%	-$88.6K	﹤0.01%	4673
2025 Q4	$4.43M	Buy	66,700 +1,700	+3%	+$83.3K	﹤0.01%	4467
2025 Q3	$2.24M	Sell	65,000 -122,200	-65%	-$2.69M	﹤0.01%	5851
2025 Q2	$2.96M	Buy	187,200 +41,200	+28%	+$591K	﹤0.01%	5001
2025 Q1	$1.86M	Buy	146,000 +11,500	+9%	+$209K	﹤0.01%	5666
2024 Q4	$2.53M	Buy	134,500 +53,100	+65%	+$1.09M	﹤0.01%	5150
2024 Q3	$1.58M	Buy	81,400 +10,000	+14%	+$244K	﹤0.01%	5959
2024 Q2	$1.86M	Buy	71,400 +17,700	+33%	+$435K	﹤0.01%	5457
2024 Q1	$1.54M	Buy	53,700 +800	+2%	+$25.6K	﹤0.01%	6044
2023 Q4	$1.62M	Buy	52,900 +18,900	+56%	+$502K	﹤0.01%	5753
2023 Q3	$914K	Sell	34,000 -11,400	-25%	-$349K	﹤0.01%	6755
2023 Q2	$1.62M	Buy	45,400 +8,400	+23%	+$290K	﹤0.01%	5542
2023 Q1	$940K	Sell	37,000 -44,700	-55%	-$1.41M	﹤0.01%	6914
2022 Q4	$3.31M	Sell	81,700 -4,900	-6%	-$162K	﹤0.01%	4579
2022 Q3	$2.86M	Buy	86,600 +400	+0.5%	+$16.1K	﹤0.01%	4893
2022 Q2	$3.04M	Sell	86,200 -1,600	-2%	-$60.2K	﹤0.01%	4737
2022 Q1	$4.04M	Sell	87,800 -15,900	-15%	-$787K	﹤0.01%	4585
2021 Q4	$6.88M	Sell	103,700 -37,800	-27%	-$2.6M	﹤0.01%	3749
2021 Q3	$8.83M	Sell	141,500 -17,300	-11%	-$1.12M	﹤0.01%	3287
2021 Q2	$13.2M	Buy	158,800 +53,000	+50%	+$3.95M	﹤0.01%	2656
2021 Q1	$7.02M	Sell	105,800 -9,800	-8%	-$760K	﹤0.01%	3573
2020 Q4	$8.87M	Sell	115,600 -51,100	-31%	-$3.27M	﹤0.01%	2812
2020 Q3	$7.18M	Sell	166,700 -1,400	-0.8%	-$60.4K	﹤0.01%	2669
2020 Q2	$7.26M	Buy	168,100 +18,600	+12%	+$656K	﹤0.01%	2587
2020 Q1	$4.3M	Sell	149,500 -5,200	-3%	-$210K	﹤0.01%	2926
2019 Q4	$9.81M	Buy	154,700 +62,600	+68%	+$3.11M	﹤0.01%	2225
2019 Q3	$2.6M	Buy	92,100 +16,900	+22%	+$500K	﹤0.01%	4079
2019 Q2	$1.99M	Buy	75,200 +43,100	+134%	+$946K	﹤0.01%	4517
2019 Q1	$589K	Sell	32,100 -75,600	-70%	-$1.25M	﹤0.01%	6515
2018 Q4	$1.34M	Buy	107,700 +9,500	+10%	+$130K	﹤0.01%	4824
2018 Q3	$1.88M	Buy	98,200 +29,100	+42%	+$478K	﹤0.01%	4524
2018 Q2	$940K	Buy	69,100 +36,500	+112%	+$341K	﹤0.01%	5330
2018 Q1	$235K	Buy	32,600 +12,800	+65%	+$78.8K	﹤0.01%	7094
2017 Q4	$73K	Buy	19,800 +8,900	+82%	+$33.1K	﹤0.01%	7522
2017 Q3	$47K	Buy	+10,900	New	+$26K	﹤0.01%	7194
2017 Q1	–	Sell	-13,700	Closed	-$21K	–	7407
2016 Q4	$21K	Sell	13,700 -10,000	-42%	-$42.6K	﹤0.01%	7070
2016 Q3	$174K	Buy	+23,700	New	+$154K	﹤0.01%	6390
2016 Q1	–	Sell	-3,400	Closed	-$21K	–	6726
2015 Q4	$21K	Sell	3,400 -41,600	-92%	-$236K	﹤0.01%	7882
2015 Q3	$259K	Buy	45,000 +26,900	+149%	+$169K	﹤0.01%	5779
2015 Q2	$129K	Sell	18,100 -28,000	-61%	-$192K	﹤0.01%	6817
2015 Q1	$312K	Sell	46,100 -1,400	-3%	-$9.94K	﹤0.01%	5592
2014 Q4	$351K	Sell	47,500 -72,300	-60%	-$492K	﹤0.01%	5205
2014 Q3	$1.77M	Buy	119,800 +46,300	+63%	+$633K	﹤0.01%	2990
2014 Q2	$1.05M	Buy	73,500 +42,700	+139%	+$560K	﹤0.01%	3428
2014 Q1	$506K	Buy	30,800 +24,100	+360%	+$423K	﹤0.01%	4329
2013 Q4	$73K	Buy	+6,700	New	+$53.6K	﹤0.01%	5829

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

Citadel Advisors's ARWR Position: Q1 2026 in Review

Citadel Advisors reduced its Arrowhead Research (ARWR) stake by 79% in Q1 2026, selling an estimated $23.8M and leaving 98,194 shares worth $6.16M. The position accounts for ﹤0.01% of the portfolio, ranked #4007.

Citadel Advisors first reported a position in ARWR in Q4 2013 and has held it in 44 quarters since. The position peaked at $31.5M in Q4 2025. 436 funds tracked by Wall St. Rank hold ARWR as of Q1 2026.

Citadel Advisors held 98,194 shares of Arrowhead Research worth $6.16M as of Q1 2026.
Citadel Advisors sold 376,065 Arrowhead Research shares in Q1 2026, an estimated $23.8M.
Arrowhead Research made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #4007 holding.
Citadel Advisors first reported a position in Arrowhead Research in Q4 2013 and has held it in 44 quarters since.
Citadel Advisors's Arrowhead Research position peaked at $31.5M in Q4 2025.
436 funds tracked by Wall St. Rank held Arrowhead Research as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.