Sumitomo Mitsui Trust Group
BIIB icon

Sumitomo Mitsui Trust Group’s Biogen BIIB Stock Holding History

Sumitomo Mitsui Trust Group’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 		$65.3M Sell
356,291
-14,336
-4% -$2.64M 0.04% 366
2025
Q4 		$65.2M Sell
370,627
-44,982
-11% -$7.35M 0.04% 390
2025
Q3 		$58.2M Buy
415,609
+779
+0.2% +$105K 0.03% 433
2025
Q2 		$52.1M Sell
414,830
-2,130
-0.5% -$265K 0.03% 442
2025
Q1 		$57.1M Buy
416,960
+25,464
+7% +$3.64M 0.04% 406
2024
Q4 		$59.9M Buy
391,496
+21,368
+6% +$3.6M 0.04% 405
2024
Q3 		$71.7M Buy
370,128
+9,254
+3% +$1.94M 0.05% 369
2024
Q2 		$83.7M Sell
360,874
-25,608
-7% -$5.57M 0.06% 303
2024
Q1 		$83.3M Buy
386,482
+3,380
+0.9% +$792K 0.06% 347
2023
Q4 		$99.1M Buy
383,102
+4,593
+1% +$1.13M 0.07% 287
2023
Q3 		$97.3M Sell
378,509
-1,732
-0.5% -$463K 0.08% 263
2023
Q2 		$108M Sell
380,241
-61,256
-14% -$18.2M 0.08% 252
2023
Q1 		$123M Sell
441,497
-78,298
-15% -$21.7M 0.09% 244
2022
Q4 		$144M Sell
519,795
-49,590
-9% -$14M 0.11% 207
2022
Q3 		$152M Sell
569,385
-79,105
-12% -$16.8M 0.12% 184
2022
Q2 		$132M Buy
648,490
+117,090
+22% +$23.9M 0.1% 231
2022
Q1 		$112M Sell
531,400
-20,601
-4% -$4.48M 0.07% 308
2021
Q4 		$132M Buy
552,001
+86,382
+19% +$22.2M 0.08% 267
2021
Q3 		$132M Sell
465,619
-29,106
-6% -$9.54M 0.08% 265
2021
Q2 		$171M Sell
494,725
-37,667
-7% -$11.4M 0.1% 223
2021
Q1 		$149M Sell
532,392
-69,879
-12% -$18.8M 0.09% 237
2020
Q4 		$147M Sell
602,271
-71,807
-11% -$18.5M 0.1% 232
2020
Q3 		$191M Sell
674,078
-89,450
-12% -$24.9M 0.13% 178
2020
Q2 		$204M Sell
763,528
-34,069
-4% -$10.2M 0.14% 153
2020
Q1 		$252M Buy
797,597
+38,137
+5% +$11.6M 0.22% 105
2019
Q4 		$225M Sell
759,460
-92,114
-11% -$25.6M 0.18% 123
2019
Q3 		$198M Buy
851,574
+63,938
+8% +$14.9M 0.17% 130
2019
Q2 		$184M Sell
787,636
-2,977
-0.4% -$687K 0.16% 135
2019
Q1 		$187M Buy
790,613
+8,048
+1% +$2.53M 0.17% 133
2018
Q4 		$230M Buy
782,565
+101,920
+15% +$32.5M 0.25% 90
2018
Q3 		$240M Buy
680,645
+13,192
+2% +$4.54M 0.26% 84
2018
Q2 		$194M Buy
667,453
+22,858
+4% +$6.43M 0.23% 98
2018
Q1 		$177M Buy
644,595
+27,134
+4% +$8.42M 0.23% 100
2017
Q4 		$197M Buy
617,461
+7,005
+1% +$2.25M 0.25% 86
2017
Q3 		$191M Sell
610,456
-11,974
-2% -$3.55M 0.27% 84
2017
Q2 		$169M Buy
622,430
+10,203
+2% +$2.7M 0.25% 93
2017
Q1 		$167M Buy
612,227
+537
+0.1% +$152K 0.26% 88
2016
Q4 		$173M Sell
611,690
-9,940
-2% -$2.95M 0.28% 79
2016
Q3 		$195M Buy
621,630
+1,074
+0.2% +$318K 0.32% 65
2016
Q2 		$150M Sell
620,556
-56,946
-8% -$15M 0.26% 84
2016
Q1 		$176M Sell
677,502
-38,588
-5% -$10.2M 0.31% 70
2015
Q4 		$221M Sell
716,090
-1,174
-0.2% -$337K 0.39% 53
2015
Q3 		$209M Buy
717,264
+105,707
+17% +$34.9M 0.41% 52
2015
Q2 		$247M Sell
611,557
-3,234
-0.5% -$1.3M 0.44% 47
2015
Q1 		$260M Buy
614,791
+24,383
+4% +$9.61M 0.47% 44
2014
Q4 		$202M Sell
590,408
-4,325
-0.7% -$1.4M 0.39% 56
2014
Q3 		$197M Buy
594,733
+24,462
+4% +$8.07M 0.39% 55
2014
Q2 		$180M Sell
570,271
-16,294
-3% -$4.9M 0.37% 60
2014
Q1 		$179M Sell
586,565
-17,559
-3% -$5.57M 0.38% 59
2013
Q4 		$169M Sell
604,124
-31,442
-5% -$8.13M 0.35% 64
2013
Q3 		$153M Sell
635,566
-818
-0.1% -$183K 0.33% 69
2013
Q2 		$137M Buy
+636,384
New +$136M 0.31% 72

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

Sumitomo Mitsui Trust Group's BIIB Position: Q1 2026 in Review

Sumitomo Mitsui Trust Group reduced its Biogen (BIIB) stake by 3.9% in Q1 2026, selling an estimated $2.64M and leaving 356,291 shares worth $65.3M. The position accounts for 0.04% of the portfolio, ranked #366.

Sumitomo Mitsui Trust Group first reported a position in BIIB in Q2 2013 and has held it in 52 quarters since. The position peaked at $260M in Q1 2015. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Sumitomo Mitsui Trust Group held 356,291 shares of Biogen worth $65.3M as of Q1 2026.
  • Sumitomo Mitsui Trust Group sold 14,336 Biogen shares in Q1 2026, an estimated $2.64M.
  • Biogen made up 0.04% of Sumitomo Mitsui Trust Group's portfolio in Q1 2026, its #366 holding.
  • Sumitomo Mitsui Trust Group first reported a position in Biogen in Q2 2013 and has held it in 52 quarters since.
  • Sumitomo Mitsui Trust Group's Biogen position peaked at $260M in Q1 2015.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Sumitomo Mitsui Trust Group's 13F filing for Q1 2026, filed 30 Apr 2026.