Capstone Investment Advisors
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Capstone Investment Advisors’s Biogen BIIB Stock Holding History

Capstone Investment Advisors’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
-2,445
Closed -$451K – 1598
2025
Q4 		$430K Sell
2,445
-5,826
-70% -$952K ﹤0.01% 1201
2025
Q3 		$1.16M Buy
8,271
+2,285
+38% +$309K ﹤0.01% 954
2025
Q2 		$752K Sell
5,986
-1,081
-15% -$135K ﹤0.01% 950
2025
Q1 		$967K Sell
7,067
-18,979
-73% -$2.71M ﹤0.01% 893
2024
Q4 		$3.98M Buy
26,046
+6,600
+34% +$1.11M 0.01% 628
2024
Q3 		$3.77M Buy
19,446
+12,873
+196% +$2.69M 0.01% 545
2024
Q2 		$1.52M Sell
6,573
-4,308
-40% -$936K ﹤0.01% 821
2024
Q1 		$2.35M Buy
10,881
+5,691
+110% +$1.33M 0.01% 717
2023
Q4 		$1.34M Sell
5,190
-714
-12% -$175K ﹤0.01% 938
2023
Q3 		$1.52M Buy
5,904
+3,693
+167% +$988K 0.01% 827
2023
Q2 		$630K Sell
2,211
-1,249
-36% -$372K ﹤0.01% 1052
2023
Q1 		$962K Buy
+3,460
New +$957K ﹤0.01% 808
2022
Q3 		– Sell
-340
Closed -$72.2K – 1653
2022
Q2 		$69K Sell
340
-4,549
-93% -$930K ﹤0.01% 1568
2022
Q1 		$1.03M Sell
4,889
-13,668
-74% -$2.97M ﹤0.01% 1300
2021
Q4 		$4.45M Buy
18,557
+7,438
+67% +$1.91M 0.01% 860
2021
Q3 		$3.15M Buy
11,119
+4,153
+60% +$1.36M 0.01% 1019
2021
Q2 		$2.41M Buy
+6,966
New +$2.11M 0.01% 967
2021
Q1 		– Sell
-18,842
Closed -$5.08M – 1677
2020
Q4 		$4.61M Buy
18,842
+15,119
+406% +$3.9M 0.02% 618
2020
Q3 		$1.06M Sell
3,723
-2,523
-40% -$704K 0.01% 1002
2020
Q2 		$1.67M Buy
+6,246
New +$1.88M 0.01% 770
2020
Q1 		– Sell
-303
Closed -$92K – 1153
2019
Q4 		$90K Sell
303
-22,781
-99% -$6.32M ﹤0.01% 1311
2019
Q3 		$5.37M Sell
23,084
-4,814
-17% -$1.12M 0.04% 415
2019
Q2 		$6.53M Sell
27,898
-1,739
-6% -$402K 0.05% 394
2019
Q1 		$7.01M Buy
29,637
+27,492
+1,282% +$8.66M 0.06% 288
2018
Q4 		$645K Sell
2,145
-1,192
-36% -$380K 0.01% 754
2018
Q3 		$1.18M Buy
3,337
+1,431
+75% +$493K 0.01% 551
2018
Q2 		$553K Buy
+1,906
New +$536K 0.01% 472
2017
Q3 		– Sell
-11,400
Closed -$3.09M – 552
2017
Q2 		$3.09M Sell
11,400
-6,200
-35% -$1.64M 0.08% 199
2017
Q1 		$4.81M Buy
17,600
+17,594
+293,233% +$4.97M 0.12% 144
2016
Q4 		$1K Buy
+6
New +$1.78K ﹤0.01% 888
2016
Q3 		– Sell
-11,685
Closed -$2.83M – 740
2016
Q2 		$2.83M Sell
11,685
-1,320
-10% -$348K 0.05% 198
2016
Q1 		$3.38M Buy
+13,005
New +$3.44M 0.1% 133
2013
Q4 		– Sell
-3,179
Closed -$765K – 488
2013
Q3 		$765K Buy
+3,179
New +$711K 0.01% 440

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

Capstone Investment Advisors's BIIB Position: Q1 2026 in Review

Capstone Investment Advisors sold out of Biogen (BIIB) in Q1 2026, closing a stake of 2,445 shares — an estimated $451K sold.

Capstone Investment Advisors first reported a position in BIIB in Q3 2013 and held it in 33 quarters. The position peaked at $7.01M in Q1 2019. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Capstone Investment Advisors reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Capstone Investment Advisors sold 2,445 Biogen shares in Q1 2026, an estimated $451K.
  • Capstone Investment Advisors first reported a position in Biogen in Q3 2013 and held it in 33 quarters.
  • Capstone Investment Advisors's Biogen position peaked at $7.01M in Q1 2019.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Capstone Investment Advisors's 13F filing for Q1 2026, filed 15 May 2026.