Element Squared’s Biogen BIIB Stock Holding History

Element Squared’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	–	Sell	-15,051	Closed	-$2.65M	–	52
2025 Q4	$2.65M	Buy	+15,051	New	+$2.46M	1.44%	15

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

Element Squared's BIIB Position: Q1 2026 in Review

Element Squared sold out of Biogen (BIIB) in Q1 2026, closing a stake of 15,051 shares — an estimated $2.65M sold.

Element Squared first reported a position in BIIB in Q4 2025 and held it in 1 quarter. The position peaked at $2.65M in Q4 2025. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

Element Squared reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
Element Squared sold 15,051 Biogen shares in Q1 2026, an estimated $2.65M.
Element Squared first reported a position in Biogen in Q4 2025 and held it in 1 quarter.
Element Squared's Biogen position peaked at $2.65M in Q4 2025.
1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Element Squared's 13F filing for Q1 2026, filed 23 Apr 2026.