AWP
BIIB icon

Abacus Wealth Partners’s Biogen BIIB Stock Holding History

Abacus Wealth Partners’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 		$1.04M Sell
4,808
-4,345
-47% -$831K 0.11% 69
2026
Q1 		$1.68M Buy
9,153
+385
+4% +$70.9K 0.15% 57
2025
Q4 		$1.54M Buy
+8,768
New +$1.43M 0.15% 58

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

Abacus Wealth Partners's BIIB Position: Q2 2026 in Review

Abacus Wealth Partners reduced its Biogen (BIIB) stake by 47% in Q2 2026, selling an estimated $831K and leaving 4,808 shares worth $1.04M. The position accounts for 0.11% of the portfolio, ranked #69.

Abacus Wealth Partners first reported a position in BIIB in Q4 2025 and has held it in 3 quarters since. The position peaked at $1.68M in Q1 2026. 1,038 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Abacus Wealth Partners held 4,808 shares of Biogen worth $1.04M as of Q2 2026.
  • Abacus Wealth Partners sold 4,345 Biogen shares in Q2 2026, an estimated $831K.
  • Biogen made up 0.11% of Abacus Wealth Partners's portfolio in Q2 2026, its #69 holding.
  • Abacus Wealth Partners first reported a position in Biogen in Q4 2025 and has held it in 3 quarters since.
  • Abacus Wealth Partners's Biogen position peaked at $1.68M in Q1 2026.
  • 1,038 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Abacus Wealth Partners's 13F filing for Q2 2026, filed 22 Jul 2026.