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Entropy Technologies’s Biogen BIIB Stock Holding History

Entropy Technologies’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
-16,312
Closed -$2.87M – 905
2025
Q4 		$2.87M Buy
16,312
+13,899
+576% +$2.27M 0.16% 175
2025
Q3 		$338K Sell
2,413
-5,427
-69% -$734K 0.03% 628
2025
Q2 		$985K Sell
7,840
-9,470
-55% -$1.18M 0.08% 304
2025
Q1 		$2.37M Sell
17,310
-17,087
-50% -$2.44M 0.23% 124
2024
Q4 		$5.26M Buy
+34,397
New +$5.8M 0.54% 30
2024
Q2 		– Sell
-23,358
Closed -$5.04M – 679
2024
Q1 		$5.04M Buy
+23,358
New +$5.47M 0.54% 30

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

Entropy Technologies's BIIB Position: Q1 2026 in Review

Entropy Technologies sold out of Biogen (BIIB) in Q1 2026, closing a stake of 16,312 shares — an estimated $2.87M sold.

Entropy Technologies first reported a position in BIIB in Q1 2024 and held it in 6 quarters. The position peaked at $5.26M in Q4 2024. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Entropy Technologies reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Entropy Technologies sold 16,312 Biogen shares in Q1 2026, an estimated $2.87M.
  • Entropy Technologies first reported a position in Biogen in Q1 2024 and held it in 6 quarters.
  • Entropy Technologies's Biogen position peaked at $5.26M in Q4 2024.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Entropy Technologies's 13F filing for Q1 2026, filed 14 May 2026.