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O'Shaughnessy Asset Management’s Arrowhead Research ARWR Stock Holding History

O'Shaughnessy 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 		$770K Sell
9,450
-1,213
-11% -$89.6K ﹤0.01% 1392
2026
Q1 		$669K Sell
10,663
-3,925
-27% -$248K ﹤0.01% 1385
2025
Q4 		$968K Buy
14,588
+5,097
+54% +$250K 0.01% 1165
2025
Q3 		$327K Buy
+9,491
New +$209K ﹤0.01% 1700
2024
Q4 		– Sell
-10,491
Closed -$203K – 2203
2024
Q3 		$203K Buy
10,491
+1,010
+11% +$24.6K ﹤0.01% 1681
2024
Q2 		$246K Sell
9,481
-271
-3% -$6.66K ﹤0.01% 1457
2024
Q1 		$279K Sell
9,752
-144
-1% -$4.61K ﹤0.01% 1350
2023
Q4 		$303K Buy
9,896
+338
+4% +$8.98K ﹤0.01% 1214
2023
Q3 		$257K Buy
+9,558
New +$293K ﹤0.01% 1185
2023
Q2 		– Sell
-10,014
Closed -$254K – 1501
2023
Q1 		$254K Sell
10,014
-1,653
-14% -$52K ﹤0.01% 1113
2022
Q4 		$473K Sell
11,667
-409
-3% -$13.6K 0.01% 811
2022
Q3 		$399K Buy
12,076
+2,372
+24% +$95.7K 0.01% 821
2022
Q2 		$342K Buy
9,704
+326
+3% +$12.3K 0.01% 817
2022
Q1 		$431K Buy
9,378
+2,134
+29% +$106K 0.01% 763
2021
Q4 		$480K Buy
7,244
+1,204
+20% +$82.7K 0.01% 704
2021
Q3 		$378K Sell
6,040
-532
-8% -$34.4K 0.01% 752
2021
Q2 		$544K Hold
6,572
– – 0.01% 627
2021
Q1 		$435K Sell
6,572
-103
-2% -$7.99K 0.01% 659
2020
Q4 		$512K Sell
6,675
-4,995
-43% -$319K 0.01% 503
2020
Q3 		$504K Sell
11,670
-1,175
-9% -$50.7K 0.02% 445
2020
Q2 		$555K Sell
12,845
-2,897
-18% -$102K 0.02% 381
2020
Q1 		$455K Buy
15,742
+1,383
+10% +$55.8K 0.02% 309
2019
Q4 		$909K Buy
+14,359
New +$713K 0.02% 290
2019
Q1 		– Sell
-242
Closed -$3K – 904
2018
Q4 		$3K Buy
+242
New +$3.31K ﹤0.01% 846

Other funds holding ARWR

BlackRock
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
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
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

O'Shaughnessy Asset Management's ARWR Position: Q2 2026 in Review

O'Shaughnessy Asset Management reduced its Arrowhead Research (ARWR) stake by 11% in Q2 2026, selling an estimated $89.6K and leaving 9,450 shares worth $770K. The position accounts for ﹤0.01% of the portfolio, ranked #1392.

O'Shaughnessy Asset Management first reported a position in ARWR in Q4 2018 and has held it in 24 quarters since. The position peaked at $968K in Q4 2025. 502 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • O'Shaughnessy Asset Management held 9,450 shares of Arrowhead Research worth $770K as of Q2 2026.
  • O'Shaughnessy Asset Management sold 1,213 Arrowhead Research shares in Q2 2026, an estimated $89.6K.
  • Arrowhead Research made up ﹤0.01% of O'Shaughnessy Asset Management's portfolio in Q2 2026, its #1392 holding.
  • O'Shaughnessy Asset Management first reported a position in Arrowhead Research in Q4 2018 and has held it in 24 quarters since.
  • O'Shaughnessy Asset Management's Arrowhead Research position peaked at $968K in Q4 2025.
  • 502 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.