WLG
BIIB icon

Williamson Legacy Group’s Biogen BIIB Stock Holding History

Williamson Legacy Group’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 		$1.11M Buy
+5,129
New +$981K 0.55% 56
2024
Q3 		– Sell
-3,735
Closed -$866K – 110
2024
Q2 		$866K Buy
+3,735
New +$812K 0.64% 47

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Williamson Legacy Group's BIIB Position: Q2 2026 in Review

Williamson Legacy Group opened a new position in Biogen (BIIB) in Q2 2026: 5,129 shares worth $1.11M. The stake represents 0.55% of the portfolio and ranks #56 among its holdings. This is a return to the name: Williamson Legacy Group previously reported a position in BIIB as recently as Q2 2024.

Williamson Legacy Group first reported a position in BIIB in Q2 2024 and has held it in 2 quarters since. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Williamson Legacy Group held 5,129 shares of Biogen worth $1.11M as of Q2 2026.
  • Biogen was a new Williamson Legacy Group position in Q2 2026.
  • Biogen made up 0.55% of Williamson Legacy Group's portfolio in Q2 2026, its #56 holding.
  • Williamson Legacy Group first reported a position in Biogen in Q2 2024 and has held it in 2 quarters since.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Williamson Legacy Group's 13F filing for Q2 2026, filed 13 Aug 2026.