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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

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

Private Advisor Group's BIIB Position: Q1 2026 in Review

Private Advisor Group reduced its Biogen (BIIB) stake by 24% in Q1 2026, selling an estimated $270K and leaving 4,649 shares worth $852K. The position accounts for ﹤0.01% of the portfolio, ranked #1527.

Private Advisor Group first reported a position in BIIB in Q4 2013 and has held it in 50 quarters since. The position peaked at $12M in Q3 2021. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Private Advisor Group held 4,649 shares of Biogen worth $852K as of Q1 2026.
  • Private Advisor Group sold 1,464 Biogen shares in Q1 2026, an estimated $270K.
  • Biogen made up ﹤0.01% of Private Advisor Group's portfolio in Q1 2026, its #1527 holding.
  • Private Advisor Group first reported a position in Biogen in Q4 2013 and has held it in 50 quarters since.
  • Private Advisor Group's Biogen position peaked at $12M in Q3 2021.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Private Advisor Group's 13F filing for Q1 2026, filed 27 Apr 2026.