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 		$1.22M Buy
+19,400
New +$1.23M ﹤0.01% 2297
2025
Q4 		– Sell
-68,000
Closed -$2.35M – 8472
2025
Q3 		$2.35M Buy
68,000
+29,800
+78% +$655K ﹤0.01% 2161
2025
Q2 		$603K Buy
38,200
+6,400
+20% +$91.8K ﹤0.01% 3304
2025
Q1 		$405K Sell
31,800
-22,000
-41% -$400K ﹤0.01% 3618
2024
Q4 		$1.01M Buy
53,800
+35,700
+197% +$735K ﹤0.01% 2832
2024
Q3 		$350K Sell
18,100
-5,000
-22% -$122K ﹤0.01% 3971
2024
Q2 		$600K Sell
23,100
-8,600
-27% -$211K ﹤0.01% 3457
2024
Q1 		$906K Buy
31,700
+6,500
+26% +$208K ﹤0.01% 3225
2023
Q4 		$771K Sell
25,200
-6,400
-20% -$170K ﹤0.01% 3270
2023
Q3 		$849K Buy
31,600
+16,900
+115% +$518K ﹤0.01% 2843
2023
Q2 		$524K Sell
14,700
-16,100
-52% -$555K ﹤0.01% 3269
2023
Q1 		$782K Buy
30,800
+300
+1% +$9.44K ﹤0.01% 2823
2022
Q4 		$1.24M Buy
30,500
+13,000
+74% +$431K ﹤0.01% 2268
2022
Q3 		$578K Buy
17,500
+5,100
+41% +$206K ﹤0.01% 3299
2022
Q2 		$436K Sell
12,400
-2,900
-19% -$109K ﹤0.01% 3606
2022
Q1 		$703K Sell
15,300
-61,700
-80% -$3.05M ﹤0.01% 3392
2021
Q4 		$5.11M Buy
77,000
+29,900
+63% +$2.05M 0.01% 1192
2021
Q3 		$4M Hold
47,100
– – ﹤0.01% 1404
2021
Q2 		$3.9M Buy
+47,100
New +$3.51M ﹤0.01% 1414
2021
Q1 		– Sell
-1,238
Closed -$9.5M – 8743
2020
Q4 		$9.5M Buy
1,238
+661
+115% +$42.3K 0.01% 613
2020
Q3 		$2.48M Sell
577
-9
-2% -$388 ﹤0.01% 1350
2020
Q2 		$2.53M Buy
586
+79
+16% +$2.79K ﹤0.01% 1330
2020
Q1 		$1.46M Sell
507
-238
-32% -$9.6K ﹤0.01% 1541
2019
Q4 		$4.72M Buy
745
+373
+100% +$18.5K 0.01% 839
2019
Q3 		$1.05M Buy
372
+40
+12% +$1.18K ﹤0.01% 1900
2019
Q2 		$879K Buy
332
+135
+69% +$2.96K ﹤0.01% 2024
2019
Q1 		$361K Sell
197
-226
-53% -$3.73K ﹤0.01% 3006
2018
Q4 		$525K Sell
423
-1,097
-72% -$15K ﹤0.01% 2186
2018
Q3 		$2.91M Buy
1,520
+643
+73% +$10.6K 0.01% 954
2018
Q2 		$1.19M Buy
877
+660
+304% +$6.17K ﹤0.01% 1630
2018
Q1 		$17K Sell
217
-37
-15% -$228 ﹤0.01% 3491
2017
Q4 		$12K Buy
254
+7
+3% +$26 ﹤0.01% 3720
2017
Q3 		$16K Buy
+247
New +$588 ﹤0.01% 3348
2017
Q2 		– Sell
-303
Closed -$4K – 6046
2017
Q1 		$4K Sell
303
-114
-27% -$226 ﹤0.01% 4724
2016
Q4 		$6K Buy
417
+113
+37% +$481 ﹤0.01% 4156
2016
Q3 		$57K Buy
304
+246
+424% +$1.59K ﹤0.01% 1985
2016
Q2 		$5K Sell
58
-33
-36% -$188 ﹤0.01% 4209
2016
Q1 		$2K Sell
91
-450
-83% -$1.9K ﹤0.01% 4658
2015
Q4 		$6K Sell
541
-35
-6% -$198 ﹤0.01% 3701
2015
Q3 		$41K Buy
576
+425
+281% +$2.67K ﹤0.01% 2136
2015
Q2 		$15K Buy
151
+4
+3% +$27 ﹤0.01% 2698
2015
Q1 		$6K Buy
+147
New +$1.04K ﹤0.01% 3315

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.