TRCT
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Tower Research Capital (TRC)’s Arrowhead Research ARWR Stock Holding History

Tower Research Capital (TRC)’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 		$2.82M Buy
34,537
+22,283
+182% +$1.65M 0.07% 247
2026
Q1 		$768K Buy
12,254
+10,044
+454% +$636K 0.02% 657
2025
Q4 		$147K Sell
2,210
-1,232
-36% -$60.4K ﹤0.01% 1675
2025
Q3 		$119K Sell
3,442
-7,180
-68% -$158K ﹤0.01% 1863
2025
Q2 		$168K Buy
10,622
+5,499
+107% +$78.9K ﹤0.01% 1947
2025
Q1 		$65.3K Sell
5,123
-32,669
-86% -$594K ﹤0.01% 2034
2024
Q4 		$710K Buy
37,792
+28,672
+314% +$590K 0.01% 840
2024
Q3 		$177K Sell
9,120
-17,971
-66% -$439K ﹤0.01% 1741
2024
Q2 		$704K Buy
27,091
+23,607
+678% +$580K 0.01% 1043
2024
Q1 		$99.6K Sell
3,484
-10,309
-75% -$330K ﹤0.01% 1819
2023
Q4 		$422K Buy
13,793
+7,151
+108% +$190K 0.01% 1512
2023
Q3 		$178K Sell
6,642
-2,184
-25% -$66.9K 0.01% 1507
2023
Q2 		$315K Buy
8,826
+2,320
+36% +$80K 0.01% 1265
2023
Q1 		$165K Buy
6,506
+1,638
+34% +$51.5K 0.01% 1479
2022
Q4 		$197K Sell
4,868
-10,426
-68% -$345K 0.01% 1310
2022
Q3 		$505K Buy
15,294
+7,185
+89% +$290K 0.01% 1130
2022
Q2 		$285K Buy
8,109
+5,272
+186% +$198K 0.01% 1521
2022
Q1 		$130K Sell
2,837
-5,596
-66% -$277K ﹤0.01% 2018
2021
Q4 		$559K Sell
8,433
-5,241
-38% -$360K 0.01% 1044
2021
Q3 		$854K Buy
13,674
+5,106
+60% +$331K 0.02% 635
2021
Q2 		$709K Sell
8,568
-6,806
-44% -$507K 0.02% 913
2021
Q1 		$1.02M Buy
15,374
+8,505
+124% +$660K 0.02% 778
2020
Q4 		$527K Buy
6,869
+1,886
+38% +$121K 0.02% 953
2020
Q3 		$214K Sell
4,983
-20,474
-80% -$884K ﹤0.01% 2515
2020
Q2 		$1.1M Buy
+25,457
New +$898K 0.05% 464
2020
Q1 		– Sell
-4,655
Closed -$295K – 3015
2019
Q4 		$295K Sell
4,655
-3,798
-45% -$188K 0.02% 454
2019
Q3 		$238K Buy
8,453
+8,052
+2,008% +$238K 0.02% 915
2019
Q2 		$11K Buy
401
+301
+301% +$6.61K ﹤0.01% 2482
2019
Q1 		$2K Sell
100
-1,473
-94% -$24.3K ﹤0.01% 3376
2018
Q4 		$20K Buy
1,573
+533
+51% +$7.29K ﹤0.01% 1924
2018
Q3 		$20K Buy
+1,040
New +$17.1K ﹤0.01% 2331
2018
Q1 		– Sell
-24,715
Closed -$91K – 3231
2017
Q4 		$91K Buy
+24,715
New +$91.8K 0.01% 919
2017
Q3 		– Sell
-54,803
Closed -$131K – 3763
2017
Q2 		$89K Buy
+54,803
New +$88.7K 0.01% 539
2017
Q1 		– Sell
-6,407
Closed -$10K – 3024
2016
Q4 		$10K Buy
6,407
+6,401
+106,683% +$27.3K ﹤0.01% 2629
2016
Q3 		$0 Sell
6
-1,268
-100% -$8.22K ﹤0.01% 3600
2016
Q2 		$7K Buy
1,274
+387
+44% +$2.21K ﹤0.01% 3103
2016
Q1 		$4K Buy
887
+743
+516% +$3.13K ﹤0.01% 2849
2015
Q4 		$1K Sell
144
-2,529
-95% -$14.3K ﹤0.01% 4011
2015
Q3 		$15K Buy
+2,673
New +$16.8K ﹤0.01% 1961
2015
Q2 		– Sell
-380
Closed -$3K – 4349
2015
Q1 		$3K Sell
380
-3,857
-91% -$27.4K ﹤0.01% 3532
2014
Q4 		$31K Buy
4,237
+4,236
+423,600% +$28.8K ﹤0.01% 1307
2014
Q3 		$0 Sell
1
-8,897
-100% -$122K ﹤0.01% 4400
2014
Q2 		$128K Buy
8,898
+8,286
+1,354% +$109K 0.02% 771
2014
Q1 		$10K Sell
612
-186
-23% -$3.27K ﹤0.01% 2581
2013
Q4 		$9K Buy
798
+517
+184% +$4.13K ﹤0.01% 3070
2013
Q3 		$2K Buy
+281
New +$1.08K ﹤0.01% 4079

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

Tower Research Capital (TRC)'s ARWR Position: Q2 2026 in Review

Tower Research Capital (TRC) increased its Arrowhead Research (ARWR) stake by 182% in Q2 2026, buying an estimated $1.65M and bringing the position to 34,537 shares worth $2.82M. The position accounts for 0.07% of the portfolio, ranked #247.

Tower Research Capital (TRC) first reported a position in ARWR in Q3 2013 and has held it in 46 quarters since. 500 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • Tower Research Capital (TRC) held 34,537 shares of Arrowhead Research worth $2.82M as of Q2 2026.
  • Tower Research Capital (TRC) bought 22,283 Arrowhead Research shares in Q2 2026, an estimated $1.65M.
  • Arrowhead Research made up 0.07% of Tower Research Capital (TRC)'s portfolio in Q2 2026, its #247 holding.
  • Tower Research Capital (TRC) first reported a position in Arrowhead Research in Q3 2013 and has held it in 46 quarters since.
  • 500 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q2 2026, filed 11 Aug 2026.