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Two Sigma Securities’s Biogen BIIB Stock Holding History

Two Sigma Securities’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
-1,600
Closed -$245K – 1488
2024
Q4 		$245K Buy
1,600
+100
+7% +$16.9K 0.03% 798
2024
Q3 		$291K Sell
1,500
-12,900
-90% -$2.7M ﹤0.01% 1783
2024
Q2 		$3.34M Sell
14,400
-14,800
-51% -$3.22M 0.04% 498
2024
Q1 		$6.3M Buy
29,200
+27,100
+1,290% +$6.35M 0.06% 339
2023
Q4 		$543K Sell
2,100
-4,200
-67% -$1.03M 0.01% 1496
2023
Q3 		$1.62M Buy
6,300
+3,600
+133% +$963K 0.02% 775
2023
Q2 		$769K Buy
2,700
+700
+35% +$208K 0.01% 1146
2023
Q1 		$556K Buy
+2,000
New +$553K 0.01% 1198
2022
Q3 		– Sell
-21,900
Closed -$4.47M – 2608
2022
Q2 		$4.47M Buy
21,900
+15,900
+265% +$3.25M 0.16% 144
2022
Q1 		$1.26M Buy
+6,000
New +$1.3M 0.04% 511
2021
Q3 		– Sell
-700
Closed -$242K – 1557
2021
Q2 		$242K Buy
+700
New +$212K 0.01% 1153
2021
Q1 		– Sell
-6,000
Closed -$1.47M – 904
2020
Q4 		$1.47M Buy
6,000
+4,300
+253% +$1.11M 0.03% 309
2020
Q3 		$482K Sell
1,700
-5,900
-78% -$1.65M 0.01% 613
2020
Q2 		$2.03M Buy
7,600
+6,200
+443% +$1.86M 0.05% 225
2020
Q1 		$443K Sell
1,400
-13,000
-90% -$3.95M 0.01% 667
2019
Q4 		$4.27M Buy
14,400
+4,700
+48% +$1.3M 0.03% 443
2019
Q3 		$2.26M Sell
9,700
-7,900
-45% -$1.84M 0.02% 552
2019
Q2 		$4.12M Buy
17,600
+12,600
+252% +$2.91M 0.04% 273
2019
Q1 		$1.18M Sell
5,000
-14,900
-75% -$4.69M 0.01% 500
2018
Q4 		$5.99M Sell
19,900
-20,300
-50% -$6.48M 0.07% 142
2018
Q3 		$14.2M Sell
40,200
-13,000
-24% -$4.48M 0.09% 144
2018
Q2 		$15.4M Sell
53,200
-14,900
-22% -$4.19M 0.08% 191
2018
Q1 		$18.6M Buy
68,100
+63,300
+1,319% +$19.6M 0.1% 166
2017
Q4 		$1.53M Buy
+4,800
New +$1.54M 0.04% 322

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

Two Sigma Securities's BIIB Position: Q1 2026 in Review

Two Sigma Securities reduced its Biogen (BIIB) stake by 75% in Q1 2026, selling an estimated $755K and leaving 1,335 shares worth $245K. The position accounts for 0.03% of the portfolio, ranked #923.

Two Sigma Securities first reported a position in BIIB in Q4 2015 and has held it in 23 quarters since. The position peaked at $2.49M in Q3 2018. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Two Sigma Securities held 1,335 shares of Biogen worth $245K as of Q1 2026.
  • Two Sigma Securities sold 4,095 Biogen shares in Q1 2026, an estimated $755K.
  • Biogen made up 0.03% of Two Sigma Securities's portfolio in Q1 2026, its #923 holding.
  • Two Sigma Securities first reported a position in Biogen in Q4 2015 and has held it in 23 quarters since.
  • Two Sigma Securities's Biogen position peaked at $2.49M in Q3 2018.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Two Sigma Securities's 13F filing for Q1 2026, filed 15 May 2026.