Lord, Abbett & Co
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Lord, Abbett & Co’s Biogen BIIB Stock Holding History

Lord, Abbett & Co’s Portfolio BIIB Stock Details BIIB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$28.1M Buy
+130,184
New +$24.9M 0.08% 264
2024
Q1 		– Sell
-159,399
Closed -$41.2M – 541
2023
Q4 		$41.2M Sell
159,399
-1,966
-1% -$483K 0.14% 195
2023
Q3 		$41.5M Buy
161,365
+25,818
+19% +$6.91M 0.15% 190
2023
Q2 		$38.6M Buy
+135,547
New +$40.3M 0.13% 225
2023
Q1 		– Sell
-264,315
Closed -$73.2M – 551
2022
Q4 		$73.2M Buy
264,315
+249,884
+1,732% +$70.6M 0.26% 105
2022
Q3 		$3.85M Buy
+14,431
New +$3.06M 0.01% 500
2021
Q3 		– Sell
-187,722
Closed -$65M – 640
2021
Q2 		$65M Buy
+187,722
New +$56.9M 0.16% 197
2018
Q4 		– Sell
-65,425
Closed -$23.1M – 769
2018
Q3 		$23.1M Buy
+65,425
New +$22.5M 0.06% 442
2017
Q1 		– Sell
-15,339
Closed -$4.35M – 861
2016
Q4 		$4.35M Sell
15,339
-56,763
-79% -$16.8M 0.01% 763
2016
Q3 		$22.6M Buy
+72,102
New +$21.4M 0.07% 410
2015
Q3 		– Sell
-62,331
Closed -$25.2M – 909
2015
Q2 		$25.2M Sell
62,331
-2,682
-4% -$1.08M 0.07% 415
2015
Q1 		$27.5M Sell
65,013
-13,498
-17% -$5.32M 0.07% 404
2014
Q4 		$26.7M Buy
78,511
+22,630
+40% +$7.32M 0.07% 405
2014
Q3 		$18.5M Buy
55,881
+19,020
+52% +$6.27M 0.05% 508
2014
Q2 		$11.6M Buy
+36,861
New +$11.1M 0.03% 609
2014
Q1 		– Sell
-33,688
Closed -$9.42M – 1003
2013
Q4 		$9.42M Buy
33,688
+19,258
+133% +$4.98M 0.02% 686
2013
Q3 		$3.47M Buy
14,430
+48
+0.3% +$10.7K 0.01% 879
2013
Q2 		$3.1M Buy
+14,382
New +$3.07M 0.01% 888

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

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

Lord, Abbett & Co opened a new position in Biogen (BIIB) in Q2 2026: 130,184 shares worth $28.1M. The stake represents 0.08% of the portfolio and ranks #264 among its holdings. This is a return to the name: Lord, Abbett & Co previously reported a position in BIIB as recently as Q4 2023.

Lord, Abbett & Co first reported a position in BIIB in Q2 2013 and has held it in 18 quarters since. The position peaked at $73.2M in Q4 2022. 1,046 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Lord, Abbett & Co held 130,184 shares of Biogen worth $28.1M as of Q2 2026.
  • Biogen was a new Lord, Abbett & Co position in Q2 2026.
  • Biogen made up 0.08% of Lord, Abbett & Co's portfolio in Q2 2026, its #264 holding.
  • Lord, Abbett & Co first reported a position in Biogen in Q2 2013 and has held it in 18 quarters since.
  • Lord, Abbett & Co's Biogen position peaked at $73.2M in Q4 2022.
  • 1,046 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

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