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Sompo Asset Management’s Biogen BIIB Stock Holding History

Sompo 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
Q2 		$1.86M Sell
8,596
-180
-2% -$34.4K 0.3% 58
2026
Q1 		$1.61M Buy
8,776
+1,200
+16% +$221K 0.3% 61
2025
Q4 		$1.33M Buy
7,576
+4,336
+134% +$708K 0.23% 72
2025
Q3 		$454K Buy
+3,240
New +$438K 0.08% 147
2024
Q4 		– Sell
-1,200
Closed -$233K – 197
2024
Q3 		$233K Sell
1,200
-260
-18% -$54.4K 0.04% 183
2024
Q2 		$338K Buy
1,460
+390
+36% +$84.8K 0.06% 167
2024
Q1 		$231K Buy
+1,070
New +$251K 0.04% 190
2023
Q4 		– Sell
-1,100
Closed -$283K – 193
2023
Q3 		$283K Buy
+1,100
New +$294K 0.06% 168
2023
Q2 		– Sell
-950
Closed -$264K – 172
2023
Q1 		$264K Hold
950
– – 0.06% 156
2022
Q4 		$263K Buy
+950
New +$268K 0.06% 166
2021
Q4 		– Sell
-2,870
Closed -$812K – 155
2021
Q3 		$812K Sell
2,870
-2,430
-46% -$796K 0.19% 111
2021
Q2 		$1.83M Sell
5,300
-550
-9% -$167K 0.38% 79
2021
Q1 		$1.64M Sell
5,850
-2,800
-32% -$755K 0.37% 84
2020
Q4 		$2.12M Buy
8,650
+3,450
+66% +$890K 0.46% 69
2020
Q3 		$1.48M Sell
5,200
-560
-10% -$156K 0.36% 82
2020
Q2 		$1.54M Buy
5,760
+4,220
+274% +$1.27M 0.39% 77
2020
Q1 		$487K Buy
+1,540
New +$467K 0.13% 107
2018
Q3 		– Sell
-9,800
Closed -$2.84M – 95
2018
Q2 		$2.84M Sell
9,800
-2,550
-21% -$717K 0.64% 55
2018
Q1 		$3.38M Sell
12,350
-110
-0.9% -$34.1K 0.55% 59
2017
Q4 		$3.97M Sell
12,460
-1,990
-14% -$638K 0.58% 60
2017
Q3 		$4.53M Sell
14,450
-1,500
-9% -$444K 0.69% 54
2017
Q2 		$4.33M Sell
15,950
-2,910
-15% -$769K 0.65% 60
2017
Q1 		$5.16M Sell
18,860
-390
-2% -$110K 0.64% 64
2016
Q4 		$5.46M Buy
+19,250
New +$5.71M 0.71% 63

Other funds holding BIIB

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
Handelsbanken Fonder
Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return
QCM
QRG Capital Management Chicago, Illinois $12.1B AUM 44.98% 1-Year Est. Return
CIM
Contravisory Investment Management Norwell, Massachusetts $566M AUM 42.93% 1-Year Est. Return
GIC
Generali Investments CEE Prague, Czech Republic $2.11B AUM 25.53% 1-Year Est. Return
CNB
Czech National Bank Prague, Czech Republic $18.3B AUM 43.04% 1-Year Est. Return
Wealth Enhancement Advisory Services
Wealth Enhancement Advisory Services Plymouth, Minnesota $59.8B AUM 29.42% 1-Year Est. Return
CAMG
CWA Asset Management Group Naples, Florida $3.28B AUM 34.07% 1-Year Est. Return
GC
Grimes & Company Westborough, Massachusetts $4.62B AUM 29.71% 1-Year Est. Return

Sompo Asset Management's BIIB Position: Q2 2026 in Review

Sompo Asset Management reduced its Biogen (BIIB) stake by 2.1% in Q2 2026, selling an estimated $34.4K and leaving 8,596 shares worth $1.86M. The position accounts for 0.3% of the portfolio, ranked #58.

Sompo Asset Management first reported a position in BIIB in Q4 2016 and has held it in 24 quarters since. The position peaked at $5.46M in Q4 2016. 135 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Sompo Asset Management held 8,596 shares of Biogen worth $1.86M as of Q2 2026.
  • Sompo Asset Management sold 180 Biogen shares in Q2 2026, an estimated $34.4K.
  • Biogen made up 0.3% of Sompo Asset Management's portfolio in Q2 2026, its #58 holding.
  • Sompo Asset Management first reported a position in Biogen in Q4 2016 and has held it in 24 quarters since.
  • Sompo Asset Management's Biogen position peaked at $5.46M in Q4 2016.
  • 135 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Sompo Asset Management's 13F filing for Q2 2026, filed 14 Jul 2026.