Vontobel Holding
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Vontobel Holding’s Biogen BIIB Stock Holding History

Vontobel Holding’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 		$5.92M Buy
+27,400
New +$5.24M 0.02% 417
2025
Q3 		– Sell
-25,300
Closed -$3.18M – 1355
2025
Q2 		$3.18M Buy
+25,300
New +$3.15M 0.01% 438

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

Vontobel Holding's BIIB Position: Q2 2026 in Review

Vontobel Holding increased its Biogen (BIIB) stake by 48% in Q2 2026, buying an estimated $1.26M and bringing the position to 20,311 shares worth $4.39M. The position accounts for 0.01% of the portfolio, ranked #474.

Vontobel Holding first reported a position in BIIB in Q4 2020 and has held it in 23 quarters since. The position peaked at $23.7M in Q4 2020. 1,045 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Vontobel Holding held 20,311 shares of Biogen worth $4.39M as of Q2 2026.
  • Vontobel Holding bought 6,601 Biogen shares in Q2 2026, an estimated $1.26M.
  • Biogen made up 0.01% of Vontobel Holding's portfolio in Q2 2026, its #474 holding.
  • Vontobel Holding first reported a position in Biogen in Q4 2020 and has held it in 23 quarters since.
  • Vontobel Holding's Biogen position peaked at $23.7M in Q4 2020.
  • 1,045 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Vontobel Holding's 13F filing for Q2 2026, filed 3 Aug 2026.