American Century Companies’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $19.2M | Buy |
104,783
+18,959
| +22% | +$3.49M | 0.01% | 1203 |
|
|
2025
Q4 | $15.1M | Buy |
85,824
+15,431
| +22% | +$2.52M | 0.01% | 1281 |
|
|
2025
Q3 | $9.86M | Sell |
70,393
-10,860
| -13% | -$1.47M | 0.01% | 1432 |
|
|
2025
Q2 | $10.2M | Buy |
81,253
+20,778
| +34% | +$2.59M | 0.01% | 1365 |
|
|
2025
Q1 | $8.28M | Sell |
60,475
-54,899
| -48% | -$7.85M | 0.01% | 1400 |
|
|
2024
Q4 | $17.6M | Sell |
115,374
-101,604
| -47% | -$17.1M | 0.01% | 1117 |
|
|
2024
Q3 | $42.1M | Sell |
216,978
-604,323
| -74% | -$126M | 0.02% | 677 |
|
|
2024
Q2 | $190M | Sell |
821,301
-21,166
| -3% | -$4.6M | 0.12% | 169 |
|
|
2024
Q1 | $182M | Sell |
842,467
-146,209
| -15% | -$34.2M | 0.11% | 181 |
|
|
2023
Q4 | $256M | Buy |
988,676
+89,748
| +10% | +$22M | 0.18% | 114 |
|
|
2023
Q3 | $231M | Buy |
898,928
+200,310
| +29% | +$53.6M | 0.18% | 112 |
|
|
2023
Q2 | $199M | Buy |
698,618
+325,430
| +87% | +$96.9M | 0.15% | 157 |
|
|
2023
Q1 | $104M | Sell |
373,188
-10,426
| -3% | -$2.88M | 0.08% | 273 |
|
|
2022
Q4 | $106M | Buy |
383,614
+91,793
| +31% | +$25.9M | 0.09% | 252 |
|
|
2022
Q3 | $77.9M | Sell |
291,821
-136,278
| -32% | -$28.9M | 0.07% | 300 |
|
|
2022
Q2 | $87.3M | Sell |
428,099
-451,703
| -51% | -$92.3M | 0.07% | 291 |
|
|
2022
Q1 | $185M | Buy |
879,802
+24,030
| +3% | +$5.23M | 0.13% | 184 |
|
|
2021
Q4 | $205M | Sell |
855,772
-283,047
| -25% | -$72.8M | 0.13% | 176 |
|
|
2021
Q3 | $322M | Sell |
1,138,819
-103,224
| -8% | -$33.8M | 0.22% | 116 |
|
|
2021
Q2 | $430M | Buy |
1,242,043
+258,217
| +26% | +$78.2M | 0.29% | 75 |
|
|
2021
Q1 | $275M | Buy |
983,826
+7,804
| +0.8% | +$2.1M | 0.2% | 122 |
|
|
2020
Q4 | $239M | Sell |
976,022
-91,986
| -9% | -$23.7M | 0.19% | 133 |
|
|
2020
Q3 | $303M | Buy |
1,068,008
+35,366
| +3% | +$9.86M | 0.27% | 95 |
|
|
2020
Q2 | $276M | Sell |
1,032,642
-249,314
| -19% | -$74.9M | 0.26% | 101 |
|
|
2020
Q1 | $406M | Sell |
1,281,956
-32,955
| -3% | -$10M | 0.48% | 41 |
|
|
2019
Q4 | $390M | Sell |
1,314,911
-132,163
| -9% | -$36.7M | 0.37% | 65 |
|
|
2019
Q3 | $337M | Buy |
1,447,074
+3,808
| +0.3% | +$887K | 0.34% | 80 |
|
|
2019
Q2 | $338M | Sell |
1,443,266
-200,148
| -12% | -$46.2M | 0.34% | 74 |
|
|
2019
Q1 | $388M | Sell |
1,643,414
-25,064
| -2% | -$7.89M | 0.39% | 59 |
|
|
2018
Q4 | $502M | Buy |
1,668,478
+160,607
| +11% | +$51.3M | 0.57% | 27 |
|
|
2018
Q3 | $533M | Buy |
1,507,871
+366,361
| +32% | +$126M | 0.52% | 35 |
|
|
2018
Q2 | $331M | Sell |
1,141,510
-29,819
| -3% | -$8.38M | 0.33% | 70 |
|
|
2018
Q1 | $321M | Buy |
1,171,329
+169,942
| +17% | +$52.8M | 0.33% | 82 |
|
|
2017
Q4 | $319M | Buy |
1,001,387
+95,432
| +11% | +$30.6M | 0.32% | 81 |
|
|
2017
Q3 | $284M | Sell |
905,955
-181,402
| -17% | -$53.7M | 0.29% | 102 |
|
|
2017
Q2 | $295M | Buy |
1,087,357
+8,481
| +0.8% | +$2.24M | 0.31% | 91 |
|
|
2017
Q1 | $295M | Buy |
1,078,876
+81,527
| +8% | +$23.1M | 0.31% | 91 |
|
|
2016
Q4 | $283M | Sell |
997,349
-39,332
| -4% | -$11.7M | 0.3% | 95 |
|
|
2016
Q3 | $325M | Sell |
1,036,681
-113,260
| -10% | -$33.5M | 0.36% | 74 |
|
|
2016
Q2 | $278M | Sell |
1,149,941
-153,289
| -12% | -$40.4M | 0.32% | 92 |
|
|
2016
Q1 | $339M | Sell |
1,303,230
-104,055
| -7% | -$27.5M | 0.4% | 59 |
|
|
2015
Q4 | $431M | Sell |
1,407,285
-1,380
| -0.1% | -$397K | 0.51% | 37 |
|
|
2015
Q3 | $411M | Buy |
1,408,665
+69,947
| +5% | +$23.1M | 0.5% | 40 |
|
|
2015
Q2 | $541M | Sell |
1,338,718
-341,736
| -20% | -$137M | 0.61% | 23 |
|
|
2015
Q1 | $710M | Sell |
1,680,454
-229,704
| -12% | -$90.5M | 0.79% | 11 |
|
|
2014
Q4 | $648M | Buy |
1,910,158
+193,409
| +11% | +$62.6M | 0.73% | 13 |
|
|
2014
Q3 | $568M | Buy |
1,716,749
+316,096
| +23% | +$104M | 0.66% | 19 |
|
|
2014
Q2 | $442M | Buy |
1,400,653
+441,806
| +46% | +$133M | 0.5% | 40 |
|
|
2014
Q1 | $293M | Buy |
958,847
+44,031
| +5% | +$14M | 0.35% | 64 |
|
|
2013
Q4 | $256M | Buy |
914,816
+90,107
| +11% | +$23.3M | 0.3% | 87 |
|
|
2013
Q3 | $199M | Buy |
824,709
+208,583
| +34% | +$46.7M | 0.25% | 115 |
|
|
2013
Q2 | $133M | Buy |
+616,126
| New | +$132M | 0.18% | 162 |
|
Other funds holding BIIB
VCM
VPM
