Millennium Management’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 | $17.2M | Sell |
93,964
-1,031,622
| -92% | -$190M | 0.01% | 1672 |
|
|
2025
Q4 | $198M | Buy |
1,125,586
+14,396
| +1% | +$2.35M | 0.08% | 199 |
|
|
2025
Q3 | $156M | Buy |
1,111,190
+435,688
| +64% | +$58.9M | 0.07% | 258 |
|
|
2025
Q2 | $84.8M | Buy |
675,502
+251,505
| +59% | +$31.3M | 0.04% | 487 |
|
|
2025
Q1 | $58M | Sell |
423,997
-119,847
| -22% | -$17.1M | 0.03% | 663 |
|
|
2024
Q4 | $83.2M | Buy |
543,844
+145,708
| +37% | +$24.6M | 0.04% | 483 |
|
|
2024
Q3 | $77.2M | Buy |
398,136
+158,289
| +66% | +$33.1M | 0.04% | 568 |
|
|
2024
Q2 | $55.6M | Buy |
239,847
+63,435
| +36% | +$13.8M | 0.03% | 732 |
|
|
2024
Q1 | $38M | Buy |
176,412
+171,877
| +3,790% | +$40.3M | 0.02% | 1018 |
|
|
2023
Q4 | $1.17M | Sell |
4,535
-73,609
| -94% | -$18.1M | ﹤0.01% | 4028 |
|
|
2023
Q3 | $20.1M | Buy |
78,144
+33,970
| +77% | +$9.09M | 0.01% | 1438 |
|
|
2023
Q2 | $12.6M | Sell |
44,174
-469,218
| -91% | -$140M | 0.01% | 1784 |
|
|
2023
Q1 | $143M | Buy |
513,392
+174,807
| +52% | +$48.4M | 0.08% | 199 |
|
|
2022
Q4 | $93.8M | Sell |
338,585
-574,120
| -63% | -$162M | 0.05% | 408 |
|
|
2022
Q3 | $244M | Buy |
912,705
+331,058
| +57% | +$70.3M | 0.14% | 68 |
|
|
2022
Q2 | $119M | Sell |
581,647
-22,566
| -4% | -$4.61M | 0.07% | 227 |
|
|
2022
Q1 | $127M | Buy |
604,213
+191,325
| +46% | +$41.6M | 0.07% | 248 |
|
|
2021
Q4 | $99.1M | Buy |
412,888
+141,069
| +52% | +$36.3M | 0.05% | 365 |
|
|
2021
Q3 | $76.9M | Sell |
271,819
-35,210
| -11% | -$11.5M | 0.05% | 417 |
|
|
2021
Q2 | $106M | Buy |
307,029
+152,271
| +98% | +$46.1M | 0.07% | 274 |
|
|
2021
Q1 | $43.3M | Sell |
154,758
-94,658
| -38% | -$25.5M | 0.03% | 564 |
|
|
2020
Q4 | $61.1M | Sell |
249,416
-28,043
| -10% | -$7.23M | 0.04% | 362 |
|
|
2020
Q3 | $78.7K | Buy |
277,459
+177,339
| +177% | +$49.5M | 0.1% | 172 |
|
|
2020
Q2 | $26.8M | Buy |
100,120
+27,785
| +38% | +$8.35M | 0.04% | 576 |
|
|
2020
Q1 | $22.9M | Sell |
72,335
-447,279
| -86% | -$136M | 0.05% | 397 |
|
|
2019
Q4 | $154M | Sell |
519,614
-134,114
| -21% | -$37.2M | 0.19% | 77 |
|
|
2019
Q3 | $152M | Buy |
653,728
+178,008
| +37% | +$41.4M | 0.24% | 55 |
|
|
2019
Q2 | $111M | Buy |
475,720
+367,962
| +341% | +$85M | 0.17% | 109 |
|
|
2019
Q1 | $25.5M | Buy |
107,758
+30,916
| +40% | +$9.74M | 0.04% | 659 |
|
|
2018
Q4 | $23.1M | Sell |
76,842
-189,643
| -71% | -$60.5M | 0.04% | 642 |
|
|
2018
Q3 | $94.2M | Buy |
266,485
+111,438
| +72% | +$38.4M | 0.12% | 205 |
|
|
2018
Q2 | $45M | Sell |
155,047
-289,001
| -65% | -$81.3M | 0.06% | 454 |
|
|
2018
Q1 | $122M | Buy |
444,048
+389,965
| +721% | +$121M | 0.16% | 123 |
|
|
2017
Q4 | $17.2M | Sell |
54,083
-133,645
| -71% | -$42.9M | 0.02% | 992 |
|
|
2017
Q3 | $58.8M | Sell |
187,728
-156,551
| -45% | -$46.4M | 0.09% | 299 |
|
|
2017
Q2 | $93.4M | Buy |
344,279
+172,540
| +100% | +$45.6M | 0.17% | 123 |
|
|
2017
Q1 | $47M | Sell |
171,739
-315,771
| -65% | -$89.3M | 0.09% | 328 |
|
|
2016
Q4 | $138M | Sell |
487,510
-92,427
| -16% | -$27.4M | 0.29% | 48 |
|
|
2016
Q3 | $182M | Sell |
579,937
-225,041
| -28% | -$66.7M | 0.3% | 32 |
|
|
2016
Q2 | $195M | Sell |
804,978
-26,005
| -3% | -$6.85M | 0.45% | 18 |
|
|
2016
Q1 | $216M | Sell |
830,983
-219,701
| -21% | -$58M | 0.54% | 10 |
|
|
2015
Q4 | $322M | Buy |
1,050,684
+425,850
| +68% | +$122M | 0.68% | 7 |
|
|
2015
Q3 | $182M | Sell |
624,834
-295,256
| -32% | -$97.5M | 0.35% | 31 |
|
|
2015
Q2 | $372M | Buy |
920,090
+440,068
| +92% | +$177M | 0.7% | 5 |
|
|
2015
Q1 | $203M | Buy |
480,022
+27,318
| +6% | +$10.8M | 0.38% | 27 |
|
|
2014
Q4 | $154M | Buy |
452,704
+7,041
| +2% | +$2.28M | 0.33% | 25 |
|
|
2014
Q3 | $147M | Buy |
445,663
+352,491
| +378% | +$116M | 0.37% | 22 |
|
|
2014
Q2 | $29.4M | Sell |
93,172
-93,909
| -50% | -$28.3M | 0.08% | 306 |
|
|
2014
Q1 | $57.2M | Sell |
187,081
-50,638
| -21% | -$16.1M | 0.17% | 119 |
|
|
2013
Q4 | $66.5M | Buy |
237,719
+222,881
| +1,502% | +$57.6M | 0.21% | 74 |
|
|
2013
Q3 | $3.57M | Sell |
14,838
-20,853
| -58% | -$4.67M | 0.01% | 1309 |
|
|
2013
Q2 | $7.68M | Buy |
+35,691
| New | +$7.63M | 0.02% | 767 |
|
Other funds holding BIIB
VCM
VPM
Millennium Management's BIIB Position: Q1 2026 in Review
Millennium Management reduced its Biogen (BIIB) stake by 92% in Q1 2026, selling an estimated $190M and leaving 93,964 shares worth $17.2M. The position accounts for 0.01% of the portfolio, ranked #1672.
Millennium Management first reported a position in BIIB in Q2 2013 and has held it in 52 quarters since. The position peaked at $372M in Q2 2015. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Millennium Management held 93,964 shares of Biogen worth $17.2M as of Q1 2026.
- Millennium Management sold 1,031,622 Biogen shares in Q1 2026, an estimated $190M.
- Biogen made up 0.01% of Millennium Management's portfolio in Q1 2026, its #1672 holding.
- Millennium Management first reported a position in Biogen in Q2 2013 and has held it in 52 quarters since.
- Millennium Management's Biogen position peaked at $372M in Q2 2015.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Millennium Management's 13F filing for Q1 2026, filed 15 May 2026.