Vanguard Portfolio Management
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Vanguard Portfolio Management’s Arrowhead Research ARWR Stock Holding History

Vanguard Portfolio 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 		$518M Sell
6,351,355
-794,781
-11% -$58.7M 0.02% 697
2026
Q1 		$448M Buy
+7,146,136
New +$452M 0.02% 710

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
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
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return

Vanguard Portfolio Management's ARWR Position: Q2 2026 in Review

Vanguard Portfolio Management reduced its Arrowhead Research (ARWR) stake by 11% in Q2 2026, selling an estimated $58.7M and leaving 6,351,355 shares worth $518M. The position accounts for 0.02% of the portfolio, ranked #697.

Vanguard Portfolio Management first reported a position in ARWR in Q1 2026 and has held it in 2 quarters since. 466 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • Vanguard Portfolio Management held 6,351,355 shares of Arrowhead Research worth $518M as of Q2 2026.
  • Vanguard Portfolio Management sold 794,781 Arrowhead Research shares in Q2 2026, an estimated $58.7M.
  • Arrowhead Research made up 0.02% of Vanguard Portfolio Management's portfolio in Q2 2026, its #697 holding.
  • Vanguard Portfolio Management first reported a position in Arrowhead Research in Q1 2026 and has held it in 2 quarters since.
  • 466 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.