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Westfuller Advisors’s Biogen BIIB Stock Holding History

Westfuller Advisors’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 		$11K Buy
60
+1
+2% +$184 ﹤0.01% 428
2025
Q4 		$10.4K Buy
59
+33
+127% +$5.39K ﹤0.01% 464
2025
Q3 		$3.64K Buy
+26
New +$3.51K ﹤0.01% 574

Other funds holding BIIB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
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
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Westfuller Advisors's BIIB Position: Q1 2026 in Review

Westfuller Advisors increased its Biogen (BIIB) stake by 1.7% in Q1 2026, buying an estimated $184 and bringing the position to 60 shares worth $11K. The position accounts for ﹤0.01% of the portfolio, ranked #428.

Westfuller Advisors first reported a position in BIIB in Q3 2025 and has held it in 3 quarters since. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Westfuller Advisors held 60 shares of Biogen worth $11K as of Q1 2026.
  • Westfuller Advisors bought 1 Biogen share in Q1 2026, an estimated $184.
  • Biogen made up ﹤0.01% of Westfuller Advisors's portfolio in Q1 2026, its #428 holding.
  • Westfuller Advisors first reported a position in Biogen in Q3 2025 and has held it in 3 quarters since.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Westfuller Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.