MF
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Magnetar Financial’s Arrowhead Research ARWR Stock Holding History

Magnetar Financial’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 		– Sell
-39,901
Closed -$2.65M – 1148
2025
Q4 		$2.65M Buy
+39,901
New +$1.96M 0.03% 307
2025
Q2 		– Sell
-70,375
Closed -$897K – 893
2025
Q1 		$897K Buy
70,375
+56,008
+390% +$1.02M 0.01% 359
2024
Q4 		$270K Buy
+14,367
New +$296K 0.01% 497
2023
Q4 		– Sell
-9,538
Closed -$256K – 376
2023
Q3 		$256K Buy
+9,538
New +$292K 0.01% 391
2022
Q1 		– Sell
-3,936
Closed -$261K – 1323
2021
Q4 		$261K Buy
+3,936
New +$270K ﹤0.01% 1091
2020
Q2 		– Sell
-10,335
Closed -$297K – 438
2020
Q1 		$297K Buy
+10,335
New +$417K 0.01% 343

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
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
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
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
VPC
Vestal Point Capital New York $4.28B AUM 239% 1-Year Est. Return

Magnetar Financial's ARWR Position: Q1 2026 in Review

Magnetar Financial sold out of Arrowhead Research (ARWR) in Q1 2026, closing a stake of 39,901 shares — an estimated $2.65M sold.

Magnetar Financial first reported a position in ARWR in Q1 2020 and held it in 6 quarters. The position peaked at $2.65M in Q4 2025. 438 funds tracked by Wall St. Rank hold ARWR as of Q1 2026.

  • Magnetar Financial reported no remaining Arrowhead Research position as of Q1 2026 after selling out during the quarter.
  • Magnetar Financial sold 39,901 Arrowhead Research shares in Q1 2026, an estimated $2.65M.
  • Magnetar Financial first reported a position in Arrowhead Research in Q1 2020 and held it in 6 quarters.
  • Magnetar Financial's Arrowhead Research position peaked at $2.65M in Q4 2025.
  • 438 funds tracked by Wall St. Rank held Arrowhead Research as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.