Group One Trading’s Arrowhead Research ARWR Stock Holding History

Group One Trading’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
2025 Q4	–	Sell	-2,651	Closed	-$130K	–	8083
2025 Q3	$91.4K	Sell	2,651 -16,703	-86%	-$367K	﹤0.01%	5425
2025 Q2	$306K	Buy	+19,354	New	+$278K	﹤0.01%	3911
2024 Q4	–	Sell	-2,976	Closed	-$61.3K	–	7235
2024 Q3	$57.6K	Buy	2,976 +2,390	+408%	+$58.3K	﹤0.01%	4558
2024 Q2	$15.2K	Buy	+586	New	+$14.4K	﹤0.01%	5395
2024 Q1	–	Sell	-5,960	Closed	-$191K	–	7012
2023 Q4	$182K	Buy	5,960 +1,949	+49%	+$51.8K	﹤0.01%	3952
2023 Q3	$108K	Sell	4,011 -9,690	-71%	-$297K	﹤0.01%	4385
2023 Q2	$489K	Buy	13,701 +6,043	+79%	+$208K	﹤0.01%	3047
2023 Q1	$195K	Sell	7,658 -30,100	-80%	-$947K	﹤0.01%	3699
2022 Q4	$1.53M	Buy	37,758 +15,449	+69%	+$512K	﹤0.01%	2058
2022 Q3	$737K	Buy	22,309 +4,834	+28%	+$195K	﹤0.01%	2868
2022 Q2	$615K	Sell	17,475 -1,862	-10%	-$70.1K	﹤0.01%	3230
2022 Q1	$889K	Sell	19,337 -57,443	-75%	-$2.84M	﹤0.01%	3201
2021 Q4	$5.09M	Buy	76,780 +400	+0.5%	+$27.5K	﹤0.01%	1684
2021 Q3	$4.77M	Buy	76,380 +11,355	+17%	+$735K	0.01%	1738
2021 Q2	$5.38M	Sell	65,025 -2,341	-3%	-$174K	0.01%	1614
2021 Q1	$4.47M	Buy	67,366 +30,416	+82%	+$2.36M	0.01%	1632
2020 Q4	$2.83M	Sell	36,950 -37,154	-50%	-$2.38M	﹤0.01%	1751
2020 Q3	$3.19M	Buy	74,104 +50,033	+208%	+$2.16M	0.01%	1225
2020 Q2	$1.04M	Sell	24,071 -62,278	-72%	-$2.2M	﹤0.01%	1983
2020 Q1	$2.48M	Buy	86,349 +62,627	+264%	+$2.53M	0.02%	904
2019 Q4	$1.5M	Buy	23,722 +4,707	+25%	+$234K	0.01%	1526
2019 Q3	$536K	Buy	+19,015	New	+$563K	﹤0.01%	2276
2019 Q2	–	Sell	-25,007	Closed	-$549K	–	4916
2019 Q1	$459K	Sell	25,007 -12,909	-34%	-$213K	0.01%	2017
2018 Q4	$471K	Buy	+37,916	New	+$518K	﹤0.01%	2021
2018 Q3	–	Sell	-7,793	Closed	-$128K	–	5161
2018 Q2	$106K	Sell	7,793 -60,945	-89%	-$570K	﹤0.01%	3520
2018 Q1	$496K	Buy	+68,738	New	+$423K	0.01%	2072
2017 Q3	–	Sell	-105,588	Closed	-$251K	–	4791
2017 Q2	$171K	Sell	105,588 -5,300	-5%	-$8.58K	﹤0.01%	2755
2017 Q1	$205K	Sell	110,888 -30,972	-22%	-$61.4K	﹤0.01%	2502
2016 Q4	$220K	Buy	141,860 +82,028	+137%	+$349K	﹤0.01%	2363
2016 Q3	$440K	Buy	59,832 +58,169	+3,498%	+$377K	﹤0.01%	1911
2016 Q2	$9K	Buy	+1,663	New	+$9.49K	﹤0.01%	4100
2016 Q1	–	Sell	-10,877	Closed	-$67K	–	4539
2015 Q4	$67K	Sell	10,877 -163,705	-94%	-$928K	﹤0.01%	3242
2015 Q3	$1.01M	Buy	174,582 +151,374	+652%	+$952K	0.01%	1237
2015 Q2	$166K	Buy	+23,208	New	+$159K	﹤0.01%	2671
2015 Q1	–	Sell	-507	Closed	-$4K	–	4740
2014 Q4	$4K	Sell	507 -8,467	-94%	-$57.6K	﹤0.01%	4529
2014 Q3	$133K	Sell	8,974 -49,066	-85%	-$670K	﹤0.01%	2746
2014 Q2	$831K	Sell	58,040 -15,020	-21%	-$197K	0.01%	1264
2014 Q1	$1.2M	Buy	73,060 +65,487	+865%	+$1.15M	0.02%	953
2013 Q4	$82K	Buy	7,573 +4,805	+174%	+$38.4K	﹤0.01%	3218
2013 Q3	$16K	Buy	+2,768	New	+$10.6K	﹤0.01%	4281

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

Group One Trading's ARWR Position: Q4 2025 in Review

Group One Trading sold out of Arrowhead Research (ARWR) in Q4 2025, closing a stake of 2,651 shares — an estimated $130K sold.

Group One Trading first reported a position in ARWR in Q3 2013 and held it in 40 quarters. The position peaked at $5.38M in Q2 2021. 401 funds tracked by Wall St. Rank hold ARWR as of Q4 2025.

Group One Trading reported no remaining Arrowhead Research position as of Q4 2025 after selling out during the quarter.
Group One Trading sold 2,651 Arrowhead Research shares in Q4 2025, an estimated $130K.
Group One Trading first reported a position in Arrowhead Research in Q3 2013 and held it in 40 quarters.
Group One Trading's Arrowhead Research position peaked at $5.38M in Q2 2021.
401 funds tracked by Wall St. Rank held Arrowhead Research as of Q4 2025.

Based on Group One Trading's 13F filing for Q4 2025, filed 12 Feb 2026.