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Banco Santander’s Biogen BIIB Stock Holding History

Banco Santander’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
Q2 		– Sell
-54,991
Closed -$7.52M – 486
2025
Q1 		$7.52M Buy
54,991
+7,182
+15% +$1.03M 0.08% 151
2024
Q4 		$7.31M Buy
+47,809
New +$8.06M 0.09% 141
2022
Q2 		– Sell
-4,904
Closed -$1.03M – 374
2022
Q1 		$1.03M Buy
4,904
+2,727
+125% +$593K 0.01% 299
2021
Q4 		$522K Sell
2,177
-23,487
-92% -$6.04M ﹤0.01% 358
2021
Q3 		$7.26M Buy
25,664
+71
+0.3% +$23.3K 0.04% 140
2021
Q2 		$8.86M Buy
25,593
+23,821
+1,344% +$7.22M 0.05% 115
2021
Q1 		$496K Buy
+1,772
New +$478K ﹤0.01% 318
2020
Q4 		– Sell
-3,180
Closed -$902K – 372
2020
Q3 		$902K Sell
3,180
-10,645
-77% -$2.97M 0.01% 238
2020
Q2 		$3.7M Sell
13,825
-269,016
-95% -$80.9M 0.05% 121
2020
Q1 		$89.5M Sell
282,841
-10,126
-3% -$3.07M 1.02% 14
2019
Q4 		$86.9M Sell
292,967
-49,828
-15% -$13.8M 0.8% 9
2019
Q3 		$79.8M Buy
342,795
+339,706
+10,997% +$79.1M 0.78% 11
2019
Q2 		$722K Sell
3,089
-352,712
-99% -$81.4M 0.01% 277
2019
Q1 		$84.1M Buy
355,801
+204,042
+134% +$64.3M 0.95% 7
2018
Q4 		$45.7M Buy
151,759
+71,083
+88% +$22.7M 0.58% 17
2018
Q3 		$28.5M Buy
80,676
+77,876
+2,781% +$26.8M 0.33% 34
2018
Q2 		$813K Buy
2,800
+349
+14% +$98.1K 0.01% 240
2018
Q1 		$671K Buy
+2,451
New +$761K 0.01% 259
2017
Q3 		– Sell
-175,000
Closed -$47.5M – 184
2017
Q2 		$47.5M Buy
+175,000
New +$46.3M 0.93% 12

Other funds holding BIIB

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $935B AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Banco Santander's BIIB Position: Q2 2025 in Review

Banco Santander sold out of Biogen (BIIB) in Q2 2025, closing a stake of 54,991 shares — an estimated $7.52M sold.

Banco Santander first reported a position in BIIB in Q2 2017 and held it in 19 quarters. The position peaked at $89.5M in Q1 2020. 866 funds tracked by Wall St. Rank hold BIIB as of Q2 2025.

  • Banco Santander reported no remaining Biogen position as of Q2 2025 after selling out during the quarter.
  • Banco Santander sold 54,991 Biogen shares in Q2 2025, an estimated $7.52M.
  • Banco Santander first reported a position in Biogen in Q2 2017 and held it in 19 quarters.
  • Banco Santander's Biogen position peaked at $89.5M in Q1 2020.
  • 866 funds tracked by Wall St. Rank held Biogen as of Q2 2025.

Based on Banco Santander's 13F filing for Q2 2025, filed 1 Aug 2025.