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Jefferies Financial Group’s Biogen BIIB Stock Holding History

Jefferies Financial 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
2025
Q1 		– Sell
-12,800
Closed -$1.96M – 1635
2024
Q4 		$1.96M Buy
+12,800
New +$2.16M 0.01% 673
2023
Q3 		– Sell
-3,200
Closed -$912K – 1628
2023
Q2 		$912K Sell
3,200
-1,800
-36% -$536K 0.01% 955
2023
Q1 		$1.39M Sell
5,000
-20,000
-80% -$5.53M 0.01% 772
2022
Q4 		$6.92M Buy
+25,000
New +$7.06M 0.05% 310

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

Jefferies Financial Group's BIIB Position: Q1 2026 in Review

Jefferies Financial Group reduced its Biogen (BIIB) stake by 33% in Q1 2026, selling an estimated $1.96M and leaving 21,902 shares worth $4.02M. The position accounts for 0.03% of the portfolio, ranked #395.

Jefferies Financial Group first reported a position in BIIB in Q1 2017 and has held it in 21 quarters since. The position peaked at $12.8M in Q4 2024. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Jefferies Financial Group held 21,902 shares of Biogen worth $4.02M as of Q1 2026.
  • Jefferies Financial Group sold 10,611 Biogen shares in Q1 2026, an estimated $1.96M.
  • Biogen made up 0.03% of Jefferies Financial Group's portfolio in Q1 2026, its #395 holding.
  • Jefferies Financial Group first reported a position in Biogen in Q1 2017 and has held it in 21 quarters since.
  • Jefferies Financial Group's Biogen position peaked at $12.8M in Q4 2024.
  • 1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Jefferies Financial Group's 13F filing for Q1 2026, filed 8 May 2026.