Pictet Asset Management’s Biogen BIIB Stock Holding History

Pictet 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	$184M	Sell	851,819 -61,509	-7%	-$11.8M	0.18%	145
2026 Q1	$168M	Sell	913,328 -34,166	-4%	-$6.3M	0.18%	140
2025 Q4	$167M	Buy	947,494 +176,639	+23%	+$28.9M	0.16%	152
2025 Q3	$108M	Buy	770,855 +541,513	+236%	+$73.2M	0.1%	207
2025 Q2	$28.9M	Buy	229,342 +11,812	+5%	+$1.47M	0.03%	424
2025 Q1	$30M	Sell	217,530 -76,163	-26%	-$10.9M	0.03%	399
2024 Q4	$44.9M	Sell	293,693 -178,832	-38%	-$30.2M	0.05%	321
2024 Q3	$91.8M	Sell	472,525 -202,093	-30%	-$42.3M	0.1%	208
2024 Q2	$156M	Sell	674,618 -339,660	-33%	-$73.8M	0.18%	142
2024 Q1	$219M	Sell	1,014,278 -243,681	-19%	-$57.1M	0.24%	107
2023 Q4	$326M	Buy	1,257,959 +45,477	+4%	+$11.2M	0.36%	75
2023 Q3	$312M	Buy	+1,212,482	New	+$324M	0.38%	67

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

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

Pictet Asset Management reduced its Biogen (BIIB) stake by 6.7% in Q2 2026, selling an estimated $11.8M and leaving 851,819 shares worth $184M. The position accounts for 0.18% of the portfolio, ranked #145.

Pictet Asset Management first reported a position in BIIB in Q3 2023 and has held it in 12 quarters since. The position peaked at $326M in Q4 2023. 1,042 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Pictet Asset Management held 851,819 shares of Biogen worth $184M as of Q2 2026.
Pictet Asset Management sold 61,509 Biogen shares in Q2 2026, an estimated $11.8M.
Biogen made up 0.18% of Pictet Asset Management's portfolio in Q2 2026, its #145 holding.
Pictet Asset Management first reported a position in Biogen in Q3 2023 and has held it in 12 quarters since.
Pictet Asset Management's Biogen position peaked at $326M in Q4 2023.
1,042 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Pictet Asset Management's 13F filing for Q2 2026, filed 30 Jul 2026.