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Martingale Asset Management’s Biogen BIIB Stock Holding History

Martingale Asset Management’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
Q1 		$6.73M Buy
+36,735
New +$6.77M 0.17% 141
2025
Q1 		– Sell
-34,922
Closed -$5.34M – 777
2024
Q4 		$5.34M Sell
34,922
-20,850
-37% -$3.52M 0.13% 149
2024
Q3 		$10.8M Buy
55,772
+1,431
+3% +$299K 0.25% 124
2024
Q2 		$12.6M Sell
54,341
-3,251
-6% -$707K 0.27% 121
2024
Q1 		$12.4M Sell
57,592
-4,635
-7% -$1.09M 0.25% 126
2023
Q4 		$16.1M Sell
62,227
-2,025
-3% -$497K 0.33% 111
2023
Q3 		$16.5M Buy
64,252
+1,544
+2% +$413K 0.35% 107
2023
Q2 		$17.9M Sell
62,708
-16
-0% -$4.76K 0.35% 103
2023
Q1 		$17.4M Buy
62,724
+37,482
+148% +$10.4M 0.34% 115
2022
Q4 		$6.99M Sell
25,242
-32,978
-57% -$9.31M 0.14% 152
2022
Q3 		$15.5M Buy
58,220
+1,881
+3% +$399K 0.31% 124
2022
Q2 		$11.5M Buy
+56,339
New +$11.5M 0.21% 136
2021
Q1 		– Sell
-8,008
Closed -$1.96M – 849
2020
Q4 		$1.96M Sell
8,008
-82,069
-91% -$21.2M 0.02% 292
2020
Q3 		$25.6M Buy
90,077
+26,409
+41% +$7.37M 0.31% 116
2020
Q2 		$17M Buy
63,668
+61,708
+3,148% +$18.5M 0.2% 142
2020
Q1 		$621K Sell
1,960
-2
-0.1% -$607 0.01% 776
2019
Q4 		$583K Sell
1,962
-4,002
-67% -$1.11M 0.01% 851
2019
Q3 		$1.39M Sell
5,964
-3,000
-33% -$699K 0.01% 688
2019
Q2 		$2.1M Sell
8,964
-2,300
-20% -$531K 0.02% 578
2019
Q1 		$2.66M Hold
11,264
– – 0.03% 526
2018
Q4 		$3.39M Buy
11,264
+2
+0% +$638 0.04% 417
2018
Q3 		$3.98M Sell
11,262
-499
-4% -$172K 0.05% 379
2018
Q2 		$3.41M Buy
11,761
+201
+2% +$56.5K 0.04% 409
2018
Q1 		$3.17M Sell
11,560
-2
-0% -$621 0.04% 415
2017
Q4 		$3.68M Sell
11,562
-97
-0.8% -$31.1K 0.05% 367
2017
Q3 		$3.65M Hold
11,659
– – 0.05% 403
2017
Q2 		$3.16M Buy
11,659
+301
+3% +$79.6K 0.04% 425
2017
Q1 		$3.11M Sell
11,358
-8,504
-43% -$2.4M 0.04% 429
2016
Q4 		$5.63M Sell
19,862
-2,450
-11% -$726K 0.08% 283
2016
Q3 		$6.99M Sell
22,312
-1,480
-6% -$438K 0.1% 219
2016
Q2 		$5.75M Buy
23,792
+882
+4% +$232K 0.1% 233
2016
Q1 		$5.96M Sell
22,910
-1,245
-5% -$329K 0.12% 221
2015
Q4 		$7.4M Buy
24,155
+339
+1% +$97.4K 0.16% 188
2015
Q3 		$6.95M Buy
23,816
+249
+1% +$82.2K 0.17% 191
2015
Q2 		$9.52M Sell
23,567
-1,251
-5% -$502K 0.22% 149
2015
Q1 		$10.5M Buy
24,818
+2,035
+9% +$802K 0.25% 129
2014
Q4 		$7.73M Sell
22,783
-665
-3% -$215K 0.21% 146
2014
Q3 		$7.76M Buy
23,448
+1,206
+5% +$398K 0.24% 132
2014
Q2 		$7.01M Sell
22,242
-486
-2% -$146K 0.22% 140
2014
Q1 		$6.95M Buy
22,728
+620
+3% +$197K 0.24% 132
2013
Q4 		$6.18M Sell
22,108
-13,632
-38% -$3.53M 0.21% 139
2013
Q3 		$8.61M Sell
35,740
-11,221
-24% -$2.51M 0.31% 80
2013
Q2 		$10.1M Buy
+46,961
New +$10M 0.37% 54

Other funds holding BIIB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Martingale Asset Management's BIIB Position: Q1 2026 in Review

Martingale Asset Management opened a new position in Biogen (BIIB) in Q1 2026: 36,735 shares worth $6.73M. The stake represents 0.17% of the portfolio and ranks #141 among its holdings. This is a return to the name: Martingale Asset Management previously reported a position in BIIB as recently as Q4 2024.

Martingale Asset Management first reported a position in BIIB in Q2 2013 and has held it in 43 quarters since. The position peaked at $25.6M in Q3 2020. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Martingale Asset Management held 36,735 shares of Biogen worth $6.73M as of Q1 2026.
  • Biogen was a new Martingale Asset Management position in Q1 2026.
  • Biogen made up 0.17% of Martingale Asset Management's portfolio in Q1 2026, its #141 holding.
  • Martingale Asset Management first reported a position in Biogen in Q2 2013 and has held it in 43 quarters since.
  • Martingale Asset Management's Biogen position peaked at $25.6M in Q3 2020.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Martingale Asset Management's 13F filing for Q1 2026, filed 13 May 2026.