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Grimes & Company’s Arrowhead Research ARWR Stock Holding History

Grimes & Company’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 		$327K Buy
4,011
+6
+0.1% +$443 0.01% 367
2026
Q1 		$251K Sell
4,005
-435
-10% -$27.5K 0.01% 387
2025
Q4 		$295K Buy
+4,440
New +$218K 0.01% 386

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

Grimes & Company's ARWR Position: Q2 2026 in Review

Grimes & Company increased its Arrowhead Research (ARWR) stake by 0.15% in Q2 2026, buying an estimated $443 and bringing the position to 4,011 shares worth $327K. The position accounts for 0.01% of the portfolio, ranked #367.

Grimes & Company 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.

  • Grimes & Company held 4,011 shares of Arrowhead Research worth $327K as of Q2 2026.
  • Grimes & Company bought 6 Arrowhead Research shares in Q2 2026, an estimated $443.
  • Arrowhead Research made up 0.01% of Grimes & Company's portfolio in Q2 2026, its #367 holding.
  • Grimes & Company 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 Grimes & Company's 13F filing for Q2 2026, filed 17 Jul 2026.