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Keystone Investors’s Arrowhead Research ARWR Stock Holding History

Keystone Investors’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 		$7.72M Buy
+94,661
New +$6.99M 0.41% 45
2025
Q4 		$3.84M Buy
+57,900
New +$2.84M 0.35% 44

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

Keystone Investors's ARWR Position: Q2 2026 in Review

Keystone Investors opened a new position in Arrowhead Research (ARWR) in Q2 2026: 94,661 shares worth $7.72M. The stake represents 0.41% of the portfolio and ranks #45 among its holdings. This is a return to the name: Keystone Investors previously reported a position in ARWR as recently as Q4 2025.

Keystone Investors first reported a position in ARWR in Q4 2025 and has held it in 2 quarters since. 500 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • Keystone Investors held 94,661 shares of Arrowhead Research worth $7.72M as of Q2 2026.
  • Arrowhead Research was a new Keystone Investors position in Q2 2026.
  • Arrowhead Research made up 0.41% of Keystone Investors's portfolio in Q2 2026, its #45 holding.
  • Keystone Investors first reported a position in Arrowhead Research in Q4 2025 and has held it in 2 quarters since.
  • 500 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Keystone Investors's 13F filing for Q2 2026, filed 14 Aug 2026.