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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

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

Private Advisor Group's BIIB Position: Q2 2026 in Review

Private Advisor Group reduced its Biogen (BIIB) stake by 46% in Q2 2026, selling an estimated $409K and leaving 2,510 shares worth $542K. The position accounts for ﹤0.01% of the portfolio, ranked #1743.

Private Advisor Group first reported a position in BIIB in Q4 2013 and has held it in 51 quarters since. The position peaked at $12M in Q3 2021. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Private Advisor Group held 2,510 shares of Biogen worth $542K as of Q2 2026.
  • Private Advisor Group sold 2,139 Biogen shares in Q2 2026, an estimated $409K.
  • Biogen made up ﹤0.01% of Private Advisor Group's portfolio in Q2 2026, its #1743 holding.
  • Private Advisor Group first reported a position in Biogen in Q4 2013 and has held it in 51 quarters since.
  • Private Advisor Group's Biogen position peaked at $12M in Q3 2021.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Private Advisor Group's 13F filing for Q2 2026, filed 27 Jul 2026.