Citadel Advisors’s Biogen BIIB Stock Holding History
| Quarter | Market Value | Status | Shares |
Shares Change % | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $76.4M | Buy |
608,590
+66,826
| +12% | +$8.39M | 0.01% | 372 |
|
|
2025
Q1 | $74.1M | Buy |
541,764
+388,104
| +253% | +$53.1M | 0.01% | 345 |
|
|
2024
Q4 | $23.5M | Sell |
153,660
-218,706
| -59% | -$33.4M | ﹤0.01% | 869 |
|
|
2024
Q3 | $72.2M | Buy |
+372,366
| New | +$72.2M | 0.01% | 348 |
|
|
2024
Q2 | – | Sell |
-149,298
| Closed | -$32.2M | – | 5929 |
|
|
2024
Q1 | $32.2M | Buy |
149,298
+144,037
| +2,738% | +$31.1M | 0.01% | 658 |
|
|
2023
Q4 | $1.36M | Sell |
5,261
-72,875
| -93% | -$18.9M | ﹤0.01% | 2742 |
|
|
2023
Q3 | $20.1M | Buy |
+78,136
| New | +$20.1M | ﹤0.01% | 791 |
|
|
2023
Q2 | – | Sell |
-245,084
| Closed | -$68.1M | – | 5810 |
|
|
2023
Q1 | $68.1M | Sell |
245,084
-2,728
| -1% | -$758K | 0.02% | 339 |
|
|
2022
Q4 | $68.6M | Sell |
247,812
-1,566
| -0.6% | -$434K | 0.02% | 329 |
|
|
2022
Q3 | $66.6M | Buy |
249,378
+40,935
| +20% | +$10.9M | 0.02% | 287 |
|
|
2022
Q2 | $42.5M | Buy |
208,443
+130,048
| +166% | +$26.5M | 0.01% | 446 |
|
|
2022
Q1 | $16.5M | Sell |
78,395
-10,846
| -12% | -$2.28M | ﹤0.01% | 1050 |
|
|
2021
Q4 | $21.4M | Sell |
89,241
-247,115
| -73% | -$59.3M | ﹤0.01% | 888 |
|
|
2021
Q3 | $95.2M | Sell |
336,356
-220,533
| -40% | -$62.4M | 0.02% | 215 |
|
|
2021
Q2 | $193M | Buy |
556,889
+333,326
| +149% | +$115M | 0.04% | 72 |
|
|
2021
Q1 | $62.5M | Sell |
223,563
-126,331
| -36% | -$35.3M | 0.02% | 372 |
|
|
2020
Q4 | $85.7M | Buy |
349,894
+326,285
| +1,382% | +$79.9M | 0.02% | 259 |
|
|
2020
Q3 | $6.7M | Sell |
23,609
-114,656
| -83% | -$32.5M | ﹤0.01% | 1322 |
|
|
2020
Q2 | $37M | Sell |
138,265
-74,638
| -35% | -$20M | 0.01% | 494 |
|
|
2020
Q1 | $67.4M | Sell |
212,903
-16,694
| -7% | -$5.28M | 0.03% | 261 |
|
|
2019
Q4 | $68.1M | Buy |
229,597
+85,415
| +59% | +$25.3M | 0.03% | 312 |
|
|
2019
Q3 | $33.6M | Buy |
144,182
+129,073
| +854% | +$30.1M | 0.02% | 570 |
|
|
2019
Q2 | $3.53M | Sell |
15,109
-134,307
| -90% | -$31.4M | ﹤0.01% | 1937 |
|
|
2019
Q1 | $35.3M | Buy |
149,416
+13,237
| +10% | +$3.13M | 0.02% | 503 |
|
|
2018
Q4 | $41M | Buy |
136,179
+80,679
| +145% | +$24.3M | 0.02% | 384 |
|
|
2018
Q3 | $19.6M | Sell |
55,500
-59,634
| -52% | -$21.1M | 0.01% | 757 |
|
|
2018
Q2 | $33.4M | Sell |
115,134
-144,233
| -56% | -$41.9M | 0.02% | 518 |
|
|
2018
Q1 | $71M | Buy |
259,367
+98,403
| +61% | +$26.9M | 0.04% | 231 |
|
|
2017
Q4 | $51.3M | Sell |
160,964
-502,732
| -76% | -$160M | 0.03% | 341 |
|
|
2017
Q3 | $208M | Sell |
663,696
-402,870
| -38% | -$126M | 0.16% | 48 |
|
|
2017
Q2 | $289M | Buy |
1,066,566
+275,284
| +35% | +$74.7M | 0.25% | 22 |
|
|
2017
Q1 | $216M | Buy |
791,282
+209,550
| +36% | +$57.3M | 0.2% | 38 |
|
|
2016
Q4 | $165M | Sell |
581,732
-225,808
| -28% | -$64M | 0.17% | 47 |
|
|
2016
Q3 | $253M | Sell |
807,540
-550,786
| -41% | -$172M | 0.25% | 21 |
|
|
2016
Q2 | $328M | Buy |
1,358,326
+1,019,258
| +301% | +$246M | 0.37% | 8 |
|
|
2016
Q1 | $88.3M | Sell |
339,068
-308,303
| -48% | -$80.3M | 0.11% | 101 |
|
|
2015
Q4 | $198M | Buy |
647,371
+55,482
| +9% | +$17M | 0.22% | 42 |
|
|
2015
Q3 | $173M | Buy |
591,889
+148,153
| +33% | +$43.2M | 0.16% | 82 |
|
|
2015
Q2 | $179M | Buy |
443,736
+336,793
| +315% | +$136M | 0.16% | 87 |
|
|
2015
Q1 | $45.2M | Buy |
106,943
+24,602
| +30% | +$10.4M | 0.04% | 401 |
|
|
2014
Q4 | $28M | Buy |
82,341
+25,163
| +44% | +$8.54M | 0.03% | 535 |
|
|
2014
Q3 | $18.9M | Buy |
57,178
+21,612
| +61% | +$7.15M | 0.02% | 626 |
|
|
2014
Q2 | $11.2M | Sell |
35,566
-105,287
| -75% | -$33.2M | 0.01% | 780 |
|
|
2014
Q1 | $43.1M | Buy |
140,853
+33,721
| +31% | +$10.3M | 0.05% | 347 |
|
|
2013
Q4 | $30M | Buy |
107,132
+95,464
| +818% | +$26.7M | 0.04% | 420 |
|
|
2013
Q3 | $2.81M | Buy |
11,668
+8,053
| +223% | +$1.94M | ﹤0.01% | 1146 |
|
|
2013
Q2 | $778K | Buy |
+3,615
| New | +$778K | ﹤0.01% | 1768 |
|