SEI Investments
ARWR icon

SEI Investments’s Arrowhead Research ARWR Stock Holding History

SEI Investments’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 		$24.5M Buy
300,619
+97,399
+48% +$7.19M 0.02% 720
2026
Q1 		$12.7M Buy
203,220
+90,941
+81% +$5.76M 0.01% 1003
2025
Q4 		$7.45M Buy
112,279
+98,663
+725% +$4.84M 0.01% 1192
2025
Q3 		$470K Buy
13,616
+194
+1% +$4.26K ﹤0.01% 2259
2025
Q2 		$212K Buy
13,422
+460
+4% +$6.6K ﹤0.01% 2543
2025
Q1 		$165K Buy
+12,962
New +$236K ﹤0.01% 2502
2024
Q3 		– Sell
-9,908
Closed -$258K – 2683
2024
Q2 		$258K Sell
9,908
-866
-8% -$21.3K ﹤0.01% 2395
2024
Q1 		$308K Sell
10,774
-280
-3% -$8.96K ﹤0.01% 2299
2023
Q4 		$338K Sell
11,054
-140
-1% -$3.72K ﹤0.01% 2261
2023
Q3 		$301K Sell
11,194
-4,927
-31% -$151K ﹤0.01% 2299
2023
Q2 		$575K Buy
+16,121
New +$556K ﹤0.01% 2078
2023
Q1 		– Sell
-11,447
Closed -$464K – 2685
2022
Q4 		$464K Sell
11,447
-373
-3% -$12.4K ﹤0.01% 2038
2022
Q3 		$391K Buy
11,820
+2,430
+26% +$98.1K ﹤0.01% 2199
2022
Q2 		$331K Sell
9,390
-144
-2% -$5.42K ﹤0.01% 2279
2022
Q1 		$438K Sell
9,534
-3,757
-28% -$186K ﹤0.01% 2140
2021
Q4 		$881K Sell
13,291
-270
-2% -$18.6K ﹤0.01% 1893
2021
Q3 		$847K Sell
13,561
-229
-2% -$14.8K ﹤0.01% 1850
2021
Q2 		$1.14M Sell
13,790
-14,194
-51% -$1.06M ﹤0.01% 1759
2021
Q1 		$2M Sell
27,984
-635
-2% -$49.3K 0.01% 1451
2020
Q4 		$2.2M Buy
28,619
+13,515
+89% +$864K 0.01% 1343
2020
Q3 		$650K Buy
15,104
+4,370
+41% +$189K ﹤0.01% 1797
2020
Q2 		$464K Buy
+10,734
New +$379K ﹤0.01% 1887
2020
Q1 		– Sell
-18,150
Closed -$1.15M – 2341
2019
Q4 		$1.15M Sell
18,150
-5,886
-24% -$292K ﹤0.01% 1592
2019
Q3 		$677K Buy
+24,036
New +$711K ﹤0.01% 1746

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 $3.37T AUM 44.26% 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

SEI Investments's ARWR Position: Q2 2026 in Review

SEI Investments increased its Arrowhead Research (ARWR) stake by 48% in Q2 2026, buying an estimated $7.19M and bringing the position to 300,619 shares worth $24.5M. The position accounts for 0.02% of the portfolio, ranked #720.

SEI Investments first reported a position in ARWR in Q3 2019 and has held it in 24 quarters since. 500 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • SEI Investments held 300,619 shares of Arrowhead Research worth $24.5M as of Q2 2026.
  • SEI Investments bought 97,399 Arrowhead Research shares in Q2 2026, an estimated $7.19M.
  • Arrowhead Research made up 0.02% of SEI Investments's portfolio in Q2 2026, its #720 holding.
  • SEI Investments first reported a position in Arrowhead Research in Q3 2019 and has held it in 24 quarters since.
  • 500 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.