Lord, Abbett & Co
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Lord, Abbett & Co’s Arrowhead Research ARWR Stock Holding History

Lord, Abbett & Co’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 		$44.1M Buy
540,466
+227,642
+73% +$16.8M 0.13% 200
2026
Q1 		$19.6M Buy
+312,824
New +$19.8M 0.06% 276
2014
Q4 		– Sell
-456,687
Closed -$6.75M – 915
2014
Q3 		$6.75M Buy
456,687
+48,765
+12% +$666K 0.02% 678
2014
Q2 		$5.84M Buy
407,922
+200,512
+97% +$2.63M 0.01% 771
2014
Q1 		$3.41M Buy
+207,410
New +$3.64M 0.01% 851

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

Lord, Abbett & Co's ARWR Position: Q2 2026 in Review

Lord, Abbett & Co increased its Arrowhead Research (ARWR) stake by 73% in Q2 2026, buying an estimated $16.8M and bringing the position to 540,466 shares worth $44.1M. The position accounts for 0.13% of the portfolio, ranked #200.

Lord, Abbett & Co first reported a position in ARWR in Q1 2014 and has held it in 5 quarters since. 500 funds tracked by Wall St. Rank hold ARWR as of Q2 2026.

  • Lord, Abbett & Co held 540,466 shares of Arrowhead Research worth $44.1M as of Q2 2026.
  • Lord, Abbett & Co bought 227,642 Arrowhead Research shares in Q2 2026, an estimated $16.8M.
  • Arrowhead Research made up 0.13% of Lord, Abbett & Co's portfolio in Q2 2026, its #200 holding.
  • Lord, Abbett & Co first reported a position in Arrowhead Research in Q1 2014 and has held it in 5 quarters since.
  • 500 funds tracked by Wall St. Rank held Arrowhead Research as of Q2 2026.

Based on Lord, Abbett & Co's 13F filing for Q2 2026, filed 14 Aug 2026.