Private Advisor Group
BIIB icon

Private Advisor Group’s Biogen BIIB Stock Holding History

Private Advisor 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
2023
Q4 		– Sell
-300
Closed -$771 – 2270
2023
Q3 		$771 Buy
+300
New +$80.2K ﹤0.01% 2265

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $161B AUM 86.05% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.27T AUM 50.62% 1-Year Est. Return
Amundi
Amundi Paris, France $496B AUM 35.36% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $111B AUM 30.48% 1-Year Est. Return

Private Advisor Group's BIIB Position: Q3 2026 in Review

Private Advisor Group increased its Biogen (BIIB) stake by 76% in Q3 2026, buying an estimated $404K and bringing the position to 4,415 shares worth $997K. The position accounts for ﹤0.01% of the portfolio, ranked #1674.

Private Advisor Group first reported a position in BIIB in Q4 2013 and has held it in 52 quarters since. The position peaked at $12M in Q3 2021. 761 funds tracked by Wall St. Rank hold BIIB as of Q3 2026.

  • Private Advisor Group held 4,415 shares of Biogen worth $997K as of Q3 2026.
  • Private Advisor Group bought 1,905 Biogen shares in Q3 2026, an estimated $404K.
  • Biogen made up ﹤0.01% of Private Advisor Group's portfolio in Q3 2026, its #1674 holding.
  • Private Advisor Group first reported a position in Biogen in Q4 2013 and has held it in 52 quarters since.
  • Private Advisor Group's Biogen position peaked at $12M in Q3 2021.
  • 761 funds tracked by Wall St. Rank held Biogen as of Q3 2026.

Based on Private Advisor Group's 13F filing for Q3 2026, filed 10 Nov 2026.