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Leonteq Securities AG’s Biogen BIIB Stock Holding History

Leonteq Securities AG’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
Q2 		$4.61M Sell
21,354
-5,100
-19% -$976K 0.16% 101
2026
Q1 		$4.85M Sell
26,454
-1,506
-5% -$277K 0.18% 96
2025
Q4 		$4.92M Buy
27,960
+4,843
+21% +$791K 0.15% 115
2025
Q3 		$3.24M Sell
23,117
-85,751
-79% -$11.6M 0.1% 146
2025
Q2 		$13.7M Buy
108,868
+27,209
+33% +$3.39M 0.53% 38
2025
Q1 		$11.1M Sell
81,659
-32,704
-29% -$4.68M 0.62% 24
2024
Q4 		$17.5M Buy
114,363
+101,892
+817% +$17.2M 1.18% 12
2024
Q3 		$2.42M Buy
+12,471
New +$2.61M 0.18% 119
2024
Q2 		– Sell
-22,724
Closed -$4.94M – 1206
2024
Q1 		$4.9M Buy
22,724
+14,760
+185% +$3.46M 0.37% 69
2023
Q4 		$2.06M Buy
7,964
+1,479
+23% +$363K 0.12% 161
2023
Q3 		$1.67M Buy
6,485
+1,551
+31% +$415K 0.09% 211
2023
Q2 		$1.41M Buy
4,934
+4,661
+1,707% +$1.39M 0.07% 234
2023
Q1 		$75.9K Sell
273
-10,402
-97% -$2.88M ﹤0.01% 692
2022
Q4 		$2.96M Sell
10,675
-5,806
-35% -$1.64M 0.11% 144
2022
Q3 		$4.4M Sell
16,481
-95,302
-85% -$20.2M 0.17% 112
2022
Q2 		$22.8M Sell
111,783
-11,419
-9% -$2.33M 0.86% 26
2022
Q1 		$25.9M Buy
123,202
+37,082
+43% +$8.06M 0.93% 21
2021
Q4 		$20.7M Buy
86,120
+50,704
+143% +$13M 0.74% 27
2021
Q3 		$10M Buy
35,416
+34,169
+2,740% +$11.2M 0.43% 61
2021
Q2 		$432K Buy
+1,247
New +$378K 0.03% 415

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Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Leonteq Securities AG's BIIB Position: Q2 2026 in Review

Leonteq Securities AG reduced its Biogen (BIIB) stake by 19% in Q2 2026, selling an estimated $976K and leaving 21,354 shares worth $4.61M. The position accounts for 0.16% of the portfolio, ranked #101.

Leonteq Securities AG first reported a position in BIIB in Q2 2021 and has held it in 20 quarters since. The position peaked at $25.9M in Q1 2022. 1,034 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Leonteq Securities AG held 21,354 shares of Biogen worth $4.61M as of Q2 2026.
  • Leonteq Securities AG sold 5,100 Biogen shares in Q2 2026, an estimated $976K.
  • Biogen made up 0.16% of Leonteq Securities AG's portfolio in Q2 2026, its #101 holding.
  • Leonteq Securities AG first reported a position in Biogen in Q2 2021 and has held it in 20 quarters since.
  • Leonteq Securities AG's Biogen position peaked at $25.9M in Q1 2022.
  • 1,034 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Leonteq Securities AG's 13F filing for Q2 2026, filed 27 Jul 2026.