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Summit Partners Public Asset Management’s Arrowhead Research ARWR Stock Holding History

Summit Partners Public Asset Management’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 		$67.7M Buy
830,247
+290,103
+54% +$21.4M 1.19% 20
2026
Q1 		$33.9M Buy
540,144
+70,144
+15% +$4.44M 0.91% 35
2025
Q4 		$31.2M Buy
+470,000
New +$23M 0.65% 56

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

Summit Partners Public Asset Management's ARWR Position: Q2 2026 in Review

Summit Partners Public Asset Management increased its Arrowhead Research (ARWR) stake by 54% in Q2 2026, buying an estimated $21.4M and bringing the position to 830,247 shares worth $67.7M. The position accounts for 1.19% of the portfolio, ranked #20.

Summit Partners Public Asset Management first reported a position in ARWR in Q4 2025 and has held it in 3 quarters since. 500 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • Summit Partners Public Asset Management held 830,247 shares of Arrowhead Research worth $67.7M as of Q2 2026.
  • Summit Partners Public Asset Management bought 290,103 Arrowhead Research shares in Q2 2026, an estimated $21.4M.
  • Arrowhead Research made up 1.19% of Summit Partners Public Asset Management's portfolio in Q2 2026, its #20 holding.
  • Summit Partners Public Asset Management first reported a position in Arrowhead Research in Q4 2025 and has held it in 3 quarters since.
  • 500 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Summit Partners Public Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.