Wellington Management Group’s Biogen BIIB Stock Holding History

Wellington Management Group’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	$543M	Sell	2,961,641 -589,628	-17%	-$109M	0.1%	197
2025 Q4	$625M	Sell	3,551,269 -695,235	-16%	-$114M	0.11%	179
2025 Q3	$595M	Sell	4,246,504 -551,916	-12%	-$74.6M	0.1%	185
2025 Q2	$603M	Buy	4,798,420 +125,983	+3%	+$15.7M	0.11%	176
2025 Q1	$639M	Sell	4,672,437 -258,286	-5%	-$36.9M	0.12%	160
2024 Q4	$754M	Sell	4,930,723 -200,470	-4%	-$33.8M	0.14%	150
2024 Q3	$995M	Sell	5,131,193 -35,298	-0.7%	-$7.38M	0.17%	131
2024 Q2	$1.2B	Buy	5,166,491 +46,349	+0.9%	+$10.1M	0.21%	115
2024 Q1	$1.1B	Sell	5,120,142 -204,254	-4%	-$47.8M	0.2%	127
2023 Q4	$1.38B	Sell	5,324,396 -49,914	-0.9%	-$12.3M	0.26%	100
2023 Q3	$1.38B	Buy	5,374,310 +27,951	+0.5%	+$7.48M	0.28%	90
2023 Q2	$1.52B	Sell	5,346,359 -106,529	-2%	-$31.7M	0.29%	83
2023 Q1	$1.52B	Buy	5,452,888 +41,675	+0.8%	+$11.5M	0.3%	85
2022 Q4	$1.5B	Buy	5,411,213 +275,596	+5%	+$77.8M	0.3%	86
2022 Q3	$1.37B	Sell	5,135,617 -1,151,108	-18%	-$244M	0.29%	85
2022 Q2	$1.28B	Buy	6,286,725 +37,199	+0.6%	+$7.6M	0.26%	96
2022 Q1	$1.32B	Buy	6,249,526 +65,071	+1%	+$14.2M	0.23%	104
2021 Q4	$1.48B	Buy	6,184,455 +606,735	+11%	+$156M	0.24%	102
2021 Q3	$1.58B	Sell	5,577,720 -24,141	-0.4%	-$7.91M	0.27%	85
2021 Q2	$1.94B	Sell	5,601,861 -300,980	-5%	-$91.2M	0.32%	78
2021 Q1	$1.65B	Buy	5,902,841 +120,868	+2%	+$32.6M	0.29%	84
2020 Q4	$1.42B	Buy	5,781,973 +924,781	+19%	+$239M	0.26%	87
2020 Q3	$1.38B	Buy	4,857,192 +83,432	+2%	+$23.3M	0.29%	90
2020 Q2	$1.28B	Buy	4,773,760 +678,521	+17%	+$204M	0.28%	84
2020 Q1	$1.3B	Sell	4,095,239 -560,517	-12%	-$170M	0.34%	65
2019 Q4	$1.38B	Buy	4,655,756 +983,560	+27%	+$273M	0.29%	77
2019 Q3	$855M	Sell	3,672,196 -126,769	-3%	-$29.5M	0.19%	122
2019 Q2	$888M	Sell	3,798,965 -1,409,937	-27%	-$326M	0.2%	122
2019 Q1	$1.23B	Sell	5,208,902 -192,089	-4%	-$60.5M	0.28%	93
2018 Q4	$1.63B	Sell	5,400,991 -133,019	-2%	-$42.5M	0.41%	58
2018 Q3	$1.96B	Buy	5,534,010 +473,880	+9%	+$163M	0.41%	59
2018 Q2	$1.47B	Sell	5,060,130 -13,675	-0.3%	-$3.84M	0.33%	82
2018 Q1	$1.39B	Sell	5,073,805 -35,457	-0.7%	-$11M	0.31%	80
2017 Q4	$1.63B	Sell	5,109,262 -58,400	-1%	-$18.7M	0.36%	73
2017 Q3	$1.62B	Sell	5,167,662 -60,818	-1%	-$18M	0.37%	68
2017 Q2	$1.42B	Sell	5,228,480 -483,875	-8%	-$128M	0.33%	75
2017 Q1	$1.56B	Sell	5,712,355 -131,919	-2%	-$37.3M	0.38%	68
2016 Q4	$1.66B	Buy	5,844,274 +1,306,695	+29%	+$387M	0.42%	60
2016 Q3	$1.42B	Sell	4,537,579 -274,080	-6%	-$81.2M	0.36%	70
2016 Q2	$1.16B	Buy	4,811,659 +153,390	+3%	+$40.4M	0.3%	77
2016 Q1	$1.21B	Sell	4,658,269 -620,971	-12%	-$164M	0.32%	78
2015 Q4	$1.62B	Sell	5,279,240 -383,653	-7%	-$110M	0.42%	59
2015 Q3	$1.65B	Buy	5,662,893 +828,706	+17%	+$274M	0.46%	49
2015 Q2	$1.95B	Buy	4,834,187 +1,366,907	+39%	+$549M	0.5%	47
2015 Q1	$1.46B	Buy	3,467,280 +931,435	+37%	+$367M	0.38%	64
2014 Q4	$861M	Buy	2,535,845 +1,006,795	+66%	+$326M	0.23%	99
2014 Q3	$506M	Sell	1,529,050 -272,075	-15%	-$89.7M	0.14%	157
2014 Q2	$568M	Sell	1,801,125 -840,786	-32%	-$253M	0.15%	150
2014 Q1	$808M	Sell	2,641,911 -531,686	-17%	-$169M	0.22%	102
2013 Q4	$888M	Sell	3,173,597 -593,207	-16%	-$153M	0.26%	92
2013 Q3	$907M	Buy	3,766,804 +223,435	+6%	+$50M	0.28%	79
2013 Q2	$763M	Buy	+3,543,369	New	+$757M	0.25%	91