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 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

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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 Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Pictet Asset Management's BIIB Position: Q1 2026 in Review

Pictet Asset Management reduced its Biogen (BIIB) stake by 3.6% in Q1 2026, selling an estimated $6.3M and leaving 913,328 shares worth $168M. The position accounts for 0.18% of the portfolio, ranked #140.

Pictet Asset Management first reported a position in BIIB in Q3 2023 and has held it in 11 quarters since. The position peaked at $326M in Q4 2023. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

Pictet Asset Management held 913,328 shares of Biogen worth $168M as of Q1 2026.
Pictet Asset Management sold 34,166 Biogen shares in Q1 2026, an estimated $6.3M.
Biogen made up 0.18% of Pictet Asset Management's portfolio in Q1 2026, its #140 holding.
Pictet Asset Management first reported a position in Biogen in Q3 2023 and has held it in 11 quarters since.
Pictet Asset Management's Biogen position peaked at $326M in Q4 2023.
1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Pictet Asset Management's 13F filing for Q1 2026, filed 22 Apr 2026.