iSAM Funds (UK)’s Biogen BIIB Stock Holding History

iSAM Funds (UK)’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	–	Sell	-2,916	Closed	-$535K	–	275
2026 Q1	$535K	Buy	+2,916	New	+$537K	0.26%	128
2025 Q4	–	Sell	-17,191	Closed	-$2.41M	–	358
2025 Q3	$2.41M	Buy	17,191 +12,666	+280%	+$1.71M	0.49%	50
2025 Q2	$568K	Buy	+4,525	New	+$564K	0.12%	243
2024 Q4	–	Sell	-5,756	Closed	-$1.12M	–	260
2024 Q3	$1.12M	Buy	+5,756	New	+$1.2M	0.63%	42
2024 Q2	–	Sell	-1,389	Closed	-$300K	–	239
2024 Q1	$300K	Buy	+1,389	New	+$325K	0.17%	176
2023 Q3	–	Sell	-3,402	Closed	-$969K	–	233
2023 Q2	$969K	Buy	+3,402	New	+$1.01M	0.87%	28

Other funds holding BIIB

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

iSAM Funds (UK)'s BIIB Position: Q2 2026 in Review

iSAM Funds (UK) sold out of Biogen (BIIB) in Q2 2026, closing a stake of 2,916 shares — an estimated $535K sold.

iSAM Funds (UK) first reported a position in BIIB in Q2 2023 and held it in 6 quarters. The position peaked at $2.41M in Q3 2025. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

iSAM Funds (UK) reported no remaining Biogen position as of Q2 2026 after selling out during the quarter.
iSAM Funds (UK) sold 2,916 Biogen shares in Q2 2026, an estimated $535K.
iSAM Funds (UK) first reported a position in Biogen in Q2 2023 and held it in 6 quarters.
iSAM Funds (UK)'s Biogen position peaked at $2.41M in Q3 2025.
1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on iSAM Funds (UK)'s 13F filing for Q2 2026, filed 12 Aug 2026.