MPWT
BIIB icon

MassMutual Private Wealth & Trust’s Biogen BIIB Stock Holding History

MassMutual Private Wealth & Trust’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 		$158K Sell
733
-17
-2% -$3.25K ﹤0.01% 485
2026
Q1 		$137K Sell
750
-10
-1% -$1.84K ﹤0.01% 511
2025
Q4 		$134K Buy
760
+34
+5% +$5.55K ﹤0.01% 535
2025
Q3 		$102K Buy
726
+109
+18% +$14.7K ﹤0.01% 593
2025
Q2 		$77.5K Buy
617
+107
+21% +$13.3K ﹤0.01% 664
2025
Q1 		$69.8K Buy
510
+238
+88% +$34K ﹤0.01% 646
2024
Q4 		$41.6K Sell
272
-104
-28% -$17.5K ﹤0.01% 791
2024
Q3 		$72.9K Sell
376
-118
-24% -$24.7K ﹤0.01% 582
2024
Q2 		$115K Buy
494
+161
+48% +$35K ﹤0.01% 495
2024
Q1 		$71.8K Buy
333
+92
+38% +$21.5K ﹤0.01% 537
2023
Q4 		$62.4K Buy
241
+10
+4% +$2.46K ﹤0.01% 550
2023
Q3 		$59.4K Sell
231
-23
-9% -$6.15K ﹤0.01% 546
2023
Q2 		$72.4K Buy
254
+54
+27% +$16.1K ﹤0.01% 483
2023
Q1 		$55.6K Buy
200
+84
+72% +$23.2K ﹤0.01% 503
2022
Q4 		$32K Buy
116
+8
+7% +$2.26K ﹤0.01% 537
2022
Q3 		$29K Buy
108
+24
+29% +$5.1K ﹤0.01% 528
2022
Q2 		$17K Buy
84
+11
+15% +$2.25K ﹤0.01% 603
2022
Q1 		$15K Buy
73
+55
+306% +$12K ﹤0.01% 648
2021
Q4 		$4K Sell
18
-32
-64% -$8.23K ﹤0.01% 931
2021
Q3 		$14K Sell
50
-10,998
-100% -$3.6M ﹤0.01% 649
2021
Q2 		$3.83M Sell
11,048
-227
-2% -$68.8K 0.16% 137
2021
Q1 		$3.15M Buy
11,275
+256
+2% +$69K 0.15% 143
2020
Q4 		$2.7M Sell
11,019
-902
-8% -$233K 0.14% 141
2020
Q3 		$3.38M Sell
11,921
-157
-1% -$43.8K 0.2% 125
2020
Q2 		$3.23M Buy
12,078
+503
+4% +$151K 0.21% 127
2020
Q1 		$3.66M Sell
11,575
-109
-0.9% -$33.1K 0.29% 86
2019
Q4 		$3.47M Sell
11,684
-78
-0.7% -$21.6K 0.21% 125
2019
Q3 		$2.74M Sell
11,762
-826
-7% -$192K 0.18% 134
2019
Q2 		$2.94M Sell
12,588
-1,487
-11% -$343K 0.2% 126
2019
Q1 		$3.33M Buy
14,075
+291
+2% +$91.6K 0.24% 115
2018
Q4 		$4.15M Buy
13,784
+144
+1% +$46K 0.36% 76
2018
Q3 		$4.82M Sell
13,640
-1,191
-8% -$410K 0.36% 71
2018
Q2 		$4.3M Buy
14,831
+1,400
+10% +$394K 0.34% 69
2018
Q1 		$3.68M Buy
13,431
+726
+6% +$225K 0.3% 88
2017
Q4 		$4.05M Buy
12,705
+1,574
+14% +$505K 0.34% 79
2017
Q3 		$3.49M Buy
11,131
+192
+2% +$56.9K 0.29% 99
2017
Q2 		$2.97M Sell
10,939
-3,330
-23% -$881K 0.26% 109
2017
Q1 		$3.9M Buy
14,269
+787
+6% +$223K 0.37% 84
2016
Q4 		$3.82M Buy
+13,482
New +$4M 0.47% 61
2016
Q2 		$794K Buy
3,285
+700
+27% +$184K 0.1% 192
2016
Q1 		$673K Buy
2,585
+157
+6% +$41.5K 0.09% 196
2015
Q4 		$744K Sell
2,428
-2,335
-49% -$671K 0.11% 175
2015
Q3 		$1.58M Buy
4,763
+835
+21% +$276K 0.33% 78
2015
Q2 		$1.24M Sell
3,928
-1,387
-26% -$557K 0.28% 93
2015
Q1 		$2.24M Buy
5,315
+1,782
+50% +$702K 0.37% 67
2014
Q4 		$1.2M Sell
3,533
-1,230
-26% -$398K 0.39% 81
2014
Q3 		$1.58M Buy
4,763
+835
+21% +$275K 0.31% 81
2014
Q2 		$1.24M Buy
3,928
+736
+23% +$222K 0.49% 47
2014
Q1 		$976K Buy
3,192
+1,957
+158% +$621K 0.57% 46
2013
Q4 		$345K Buy
+1,235
New +$319K 0.32% 65

Other funds holding BIIB

Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
AIM
Artemis Investment Management Edinburgh, United Kingdom $11.2B AUM 80.72% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
AAMU
AEGON Asset Management (UK) Edinburgh, United Kingdom $9.38B AUM 48.94% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return
ECSS
Eurizon Capital SGR SpA Milan $37.3B AUM
ADEF
Adams Diversified Equity Fund Baltimore, Maryland $3.27B AUM 45.57% 1-Year Est. Return

MassMutual Private Wealth & Trust's BIIB Position: Q2 2026 in Review

MassMutual Private Wealth & Trust reduced its Biogen (BIIB) stake by 2.3% in Q2 2026, selling an estimated $3.25K and leaving 733 shares worth $158K. The position accounts for ﹤0.01% of the portfolio, ranked #485.

MassMutual Private Wealth & Trust first reported a position in BIIB in Q4 2013 and has held it in 50 quarters since. The position peaked at $4.82M in Q3 2018. 405 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • MassMutual Private Wealth & Trust held 733 shares of Biogen worth $158K as of Q2 2026.
  • MassMutual Private Wealth & Trust sold 17 Biogen shares in Q2 2026, an estimated $3.25K.
  • Biogen made up ﹤0.01% of MassMutual Private Wealth & Trust's portfolio in Q2 2026, its #485 holding.
  • MassMutual Private Wealth & Trust first reported a position in Biogen in Q4 2013 and has held it in 50 quarters since.
  • MassMutual Private Wealth & Trust's Biogen position peaked at $4.82M in Q3 2018.
  • 405 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on MassMutual Private Wealth & Trust's 13F filing for Q2 2026, filed 2 Jul 2026.