IMC Chicago
BIIB icon

IMC Chicago’s Biogen BIIB Stock Holding History

IMC Chicago’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
Q1 		– Sell
-19,011
Closed -$3.5M – 5709
2025
Q4 		$3.35M Buy
+19,011
New +$3.11M ﹤0.01% 2034
2022
Q1 		– Sell
-10,222
Closed -$2.22M – 1085
2021
Q4 		$2.45M Sell
10,222
-1,243
-11% -$320K ﹤0.01% 767
2021
Q3 		$3.24M Sell
11,465
-12,940
-53% -$4.24M ﹤0.01% 728
2021
Q2 		$8.45M Buy
+24,405
New +$7.39M 0.01% 488
2021
Q1 		– Sell
-11,998
Closed -$3.24M – 1043
2020
Q4 		$2.94M Buy
+11,998
New +$3.1M ﹤0.01% 654

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

IMC Chicago's BIIB Position: Q1 2026 in Review

IMC Chicago sold out of Biogen (BIIB) in Q1 2026, closing a stake of 19,011 shares — an estimated $3.5M sold.

IMC Chicago first reported a position in BIIB in Q4 2020 and held it in 5 quarters. The position peaked at $8.45M in Q2 2021. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • IMC Chicago reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • IMC Chicago sold 19,011 Biogen shares in Q1 2026, an estimated $3.5M.
  • IMC Chicago first reported a position in Biogen in Q4 2020 and held it in 5 quarters.
  • IMC Chicago's Biogen position peaked at $8.45M in Q2 2021.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on IMC Chicago's 13F filing for Q1 2026, filed 5 May 2026.