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 		$1.05M Buy
+16,700
New +$1.06M ﹤0.01% 2452
2025
Q4 		– Sell
-11,200
Closed -$386K – 8473
2025
Q3 		$386K Sell
11,200
-54,300
-83% -$1.19M ﹤0.01% 4154
2025
Q2 		$1.03M Buy
65,500
+21,500
+49% +$308K ﹤0.01% 2741
2025
Q1 		$560K Buy
44,000
+27,600
+168% +$502K ﹤0.01% 3278
2024
Q4 		$308K Buy
16,400
+300
+2% +$6.18K ﹤0.01% 4041
2024
Q3 		$311K Sell
16,100
-19,200
-54% -$469K ﹤0.01% 4089
2024
Q2 		$917K Buy
35,300
+15,800
+81% +$388K ﹤0.01% 3009
2024
Q1 		$557K Buy
19,500
+500
+3% +$16K ﹤0.01% 3749
2023
Q4 		$581K Buy
19,000
+13,000
+217% +$345K ﹤0.01% 3532
2023
Q3 		$161K Sell
6,000
-19,100
-76% -$585K ﹤0.01% 4589
2023
Q2 		$895K Buy
25,100
+17,300
+222% +$596K ﹤0.01% 2706
2023
Q1 		$198K Sell
7,800
-24,500
-76% -$771K ﹤0.01% 4329
2022
Q4 		$1.31M Buy
32,300
+25,900
+405% +$858K ﹤0.01% 2214
2022
Q3 		$211K Sell
6,400
-2,100
-25% -$84.8K ﹤0.01% 4537
2022
Q2 		$299K Sell
8,500
-3,400
-29% -$128K ﹤0.01% 4106
2022
Q1 		$547K Sell
11,900
-13,100
-52% -$649K ﹤0.01% 3736
2021
Q4 		$1.66M Buy
25,000
+9,800
+64% +$673K ﹤0.01% 2230
2021
Q3 		$1.29M Buy
15,200
+900
+6% +$58.3K ﹤0.01% 2731
2021
Q2 		$1.18M Buy
+14,300
New +$1.06M ﹤0.01% 2861
2021
Q1 		– Sell
-368
Closed -$2.82M – 8745
2020
Q4 		$2.82M Sell
368
-95
-21% -$6.08K ﹤0.01% 1447
2020
Q3 		$1.99M Sell
463
-129
-22% -$5.57K ﹤0.01% 1531
2020
Q2 		$2.56M Buy
592
+278
+89% +$9.81K ﹤0.01% 1319
2020
Q1 		$903K Sell
314
-582
-65% -$23.5K ﹤0.01% 1980
2019
Q4 		$5.68M Buy
896
+664
+286% +$32.9K 0.01% 716
2019
Q3 		$653K Sell
232
-58
-20% -$1.72K ﹤0.01% 2341
2019
Q2 		$768K Buy
290
+238
+458% +$5.22K ﹤0.01% 2161
2019
Q1 		$95K Sell
52
-326
-86% -$5.38K ﹤0.01% 4375
2018
Q4 		$469K Sell
378
-52
-12% -$711 ﹤0.01% 2299
2018
Q3 		$824K Buy
430
+376
+696% +$6.17K ﹤0.01% 2085
2018
Q2 		$73K Buy
+54
New +$505 ﹤0.01% 4642
2018
Q1 		– Sell
-23
Closed -$7K – 6077
2017
Q4 		$7K Buy
23
+5
+28% +$19 ﹤0.01% 4168
2017
Q3 		$6K Buy
18
+6
+50% +$14 ﹤0.01% 4195
2017
Q2 		$8K Buy
+12
New +$19 ﹤0.01% 4133
2017
Q1 		– Sell
-52
Closed -$48K – 6099
2016
Q4 		$48K Buy
+52
New +$222 ﹤0.01% 2195
2016
Q3 		– Sell
-25
Closed -$2K – 5754
2016
Q2 		$2K Sell
25
-27
-52% -$154 ﹤0.01% 4854
2016
Q1 		$5K Sell
52
-217
-81% -$915 ﹤0.01% 4040
2015
Q4 		$32K Sell
269
-46
-15% -$261 ﹤0.01% 2284
2015
Q3 		$66K Buy
315
+147
+88% +$924 ﹤0.01% 1766
2015
Q2 		$29K Sell
168
-1
-0.6% -$7 ﹤0.01% 2117
2015
Q1 		$76K Buy
+169
New +$1.2K 0.01% 1267

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.