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GTS Securities’s Biogen BIIB Stock Holding History

GTS 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
2026
Q1 		$253K Buy
1,381
+236
+21% +$43.5K 0.01% 1208
2025
Q4 		$202K Sell
1,145
-2,195
-66% -$359K 0.01% 1284
2025
Q3 		$468K Buy
+3,340
New +$451K 0.02% 772
2024
Q4 		– Sell
-13,294
Closed -$2.58M – 1562
2024
Q3 		$2.58M Sell
13,294
-624
-4% -$131K 0.01% 1384
2024
Q2 		$3.23M Buy
+13,918
New +$3.02M 0.01% 1149
2024
Q1 		– Sell
-15,981
Closed -$3.74M – 3866
2023
Q4 		$4.14M Buy
15,981
+658
+4% +$162K 0.01% 1138
2023
Q3 		$3.94M Buy
15,323
+4,235
+38% +$1.13M 0.01% 1068
2023
Q2 		$3.16M Buy
+11,088
New +$3.3M 0.1% 181

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

GTS Securities's BIIB Position: Q1 2026 in Review

GTS Securities increased its Biogen (BIIB) stake by 21% in Q1 2026, buying an estimated $43.5K and bringing the position to 1,381 shares worth $253K. The position accounts for 0.01% of the portfolio, ranked #1208.

GTS Securities first reported a position in BIIB in Q2 2023 and has held it in 8 quarters since. The position peaked at $4.14M in Q4 2023. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • GTS Securities held 1,381 shares of Biogen worth $253K as of Q1 2026.
  • GTS Securities bought 236 Biogen shares in Q1 2026, an estimated $43.5K.
  • Biogen made up 0.01% of GTS Securities's portfolio in Q1 2026, its #1208 holding.
  • GTS Securities first reported a position in Biogen in Q2 2023 and has held it in 8 quarters since.
  • GTS Securities's Biogen position peaked at $4.14M in Q4 2023.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

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