Simplex Trading
ARWR icon

Simplex Trading’s Arrowhead Research ARWR Stock Holding History

Simplex 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
2026
Q1 		$895K Buy
+14,281
New +$904K ﹤0.01% 2626
2025
Q3 		– Sell
-57,307
Closed -$1.26M – 9011
2025
Q2 		$905K Buy
57,307
+215
+0.4% +$3.08K ﹤0.01% 2874
2025
Q1 		$727K Buy
57,092
+40,785
+250% +$742K ﹤0.01% 3008
2024
Q4 		$306K Buy
16,307
+2,833
+21% +$58.3K ﹤0.01% 4048
2024
Q3 		$260K Sell
13,474
-746
-5% -$18.2K ﹤0.01% 4266
2024
Q2 		$369K Sell
14,220
-6,791
-32% -$167K ﹤0.01% 3986
2024
Q1 		$600K Buy
21,011
+1,867
+10% +$59.7K ﹤0.01% 3662
2023
Q4 		$585K Buy
+19,144
New +$508K ﹤0.01% 3523
2023
Q3 		– Sell
-703
Closed -$21.5K – 8605
2023
Q2 		$25K Sell
703
-1,083
-61% -$37.3K ﹤0.01% 6528
2023
Q1 		$45K Buy
+1,786
New +$56.2K ﹤0.01% 6026
2022
Q4 		– Sell
-3,222
Closed -$107K – 9146
2022
Q3 		$106K Sell
3,222
-48
-1% -$1.94K ﹤0.01% 5432
2022
Q2 		$115K Buy
3,270
+722
+28% +$27.2K ﹤0.01% 5377
2022
Q1 		$117K Sell
2,548
-20,354
-89% -$1.01M ﹤0.01% 5923
2021
Q4 		$1.52M Sell
22,902
-9,409
-29% -$646K ﹤0.01% 2342
2021
Q3 		$2.75M Buy
32,311
+4,415
+16% +$286K ﹤0.01% 1770
2021
Q2 		$2.31M Sell
27,896
-2,954
-10% -$220K ﹤0.01% 1981
2021
Q1 		$0 Buy
30,850
+4,537
+17% +$352K ﹤0.01% 8744
2020
Q4 		$2.02M Sell
26,313
-17,101
-39% -$1.09M ﹤0.01% 1771
2020
Q3 		$1.87M Sell
43,414
-240
-0.5% -$10.4K ﹤0.01% 1601
2020
Q2 		$1.89M Sell
43,654
-2,330
-5% -$82.2K ﹤0.01% 1555
2020
Q1 		$1.32M Buy
45,984
+20,645
+81% +$833K ﹤0.01% 1630
2019
Q4 		$1.61M Sell
25,339
-6,730
-21% -$334K ﹤0.01% 1664
2019
Q3 		$903K Sell
32,069
-14,909
-32% -$441K ﹤0.01% 2026
2019
Q2 		$1.24M Buy
46,978
+38,102
+429% +$836K ﹤0.01% 1715
2019
Q1 		$162K Sell
8,876
-2,355
-21% -$38.8K ﹤0.01% 3826
2018
Q4 		$139K Buy
11,231
+4,257
+61% +$58.2K ﹤0.01% 3517
2018
Q3 		$133K Sell
6,974
-53,215
-88% -$873K ﹤0.01% 4113
2018
Q2 		$818K Buy
60,189
+49,576
+467% +$463K ﹤0.01% 1970
2018
Q1 		$76K Buy
+10,613
New +$65.4K ﹤0.01% 2024
2016
Q4 		– Sell
-15,003
Closed -$63.9K – 5790
2016
Q3 		$110K Buy
15,003
+9,261
+161% +$60K 0.01% 1456
2016
Q2 		$30K Sell
5,742
-799
-12% -$4.56K ﹤0.01% 2515
2016
Q1 		$31K Buy
6,541
+2,202
+51% +$9.29K ﹤0.01% 2392
2015
Q4 		$26K Buy
+4,339
New +$24.6K ﹤0.01% 2469
2015
Q3 		– Sell
-3,401
Closed -$21.4K – 5466
2015
Q2 		$24K Sell
3,401
-3,115
-48% -$21.4K ﹤0.01% 2293
2015
Q1 		$44K Sell
6,516
-1,391
-18% -$9.87K 0.01% 1653
2014
Q4 		$58K Buy
+7,907
New +$53.8K 0.01% 1266

Other funds holding ARWR

BlackRock
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
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
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
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
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

Simplex Trading's ARWR Position: Q1 2026 in Review

Simplex Trading opened a new position in Arrowhead Research (ARWR) in Q1 2026: 14,281 shares worth $895K. The stake represents ﹤0.01% of the portfolio and ranks #2626 among its holdings. This is a return to the name: Simplex Trading previously reported a position in ARWR as recently as Q2 2025.

Simplex Trading first reported a position in ARWR in Q4 2014 and has held it in 36 quarters since. The position peaked at $2.75M in Q3 2021. 436 funds tracked by Wall St. Rank hold ARWR as of Q1 2026.

  • Simplex Trading held 14,281 shares of Arrowhead Research worth $895K as of Q1 2026.
  • Arrowhead Research was a new Simplex Trading position in Q1 2026.
  • Arrowhead Research made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #2626 holding.
  • Simplex Trading first reported a position in Arrowhead Research in Q4 2014 and has held it in 36 quarters since.
  • Simplex Trading's Arrowhead Research position peaked at $2.75M in Q3 2021.
  • 436 funds tracked by Wall St. Rank held Arrowhead Research as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.