Taproot Management’s Biogen BIIB Stock Holding History

Taproot 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	–	Sell	-5,133	Closed	-$941K	–	23
2026 Q1	$941K	Buy	+5,133	New	+$946K	0.18%	144

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

Taproot Management's BIIB Position: Q2 2026 in Review

Taproot Management sold out of Biogen (BIIB) in Q2 2026, closing a stake of 5,133 shares — an estimated $941K sold.

Taproot Management first reported a position in BIIB in Q1 2026 and held it in 1 quarter. The position peaked at $941K in Q1 2026. 1,038 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Taproot Management reported no remaining Biogen position as of Q2 2026 after selling out during the quarter.
Taproot Management sold 5,133 Biogen shares in Q2 2026, an estimated $941K.
Taproot Management first reported a position in Biogen in Q1 2026 and held it in 1 quarter.
Taproot Management's Biogen position peaked at $941K in Q1 2026.
1,038 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Taproot Management's 13F filing for Q2 2026.