First Trust Advisors LP

SEC CIK: 0001125816
Latest filing: Aug 11, 2026

SEC filings (opens in a new tab)

BIIB holding history

Biogen Inc. in every 13F filed by First Trust Advisors LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

BIIB overview All 13F holders of BIIB Full Q2 2026 holdings

Shares (Q2 2026): 682,021
Value: $147.4M
% of portfolio: 0.1%
Quarters held: 22; Since Q1 2021

Holdings of BIIB by First Trust Advisors LP, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	682,021	$147.4M	0.1%	+8,063+1.2%	Added	Holders
Q1 2026	673,958	$123.6M	0.1%	+108,111+19.1%	Added	Holders
Q4 2025	565,847	$99.6M	0.1%	−274,710−32.7%	Reduced	Holders
Q3 2025	840,557	$117.7M	0.1%	−33,266−3.8%	Reduced	Holders
Q2 2025	873,823	$109.7M	0.1%	+212,403+32.1%	Added	Holders
Q1 2025	661,420	$90.5M	0.1%	+150,140+29.4%	Added	Holders
Q4 2024	511,280	$78.2M	0.1%	+152,789+42.6%	Added	Holders
Q3 2024	358,491	$69.5M	0.1%	−31,460−8.1%	Reduced	Holders
Q2 2024	389,951	$90.4M	0.1%	+55,655+16.6%	Added	Holders
Q1 2024	334,296	$72.1M	0.1%	−643,012−65.8%	Reduced	Holders
Q4 2023	977,308	$252.9M	0.3%	+571,795+141.0%	Added	Holders
Q3 2023	405,513	$104.2M	0.1%	−6,186−1.5%	Reduced	Holders
Q2 2023	411,699	$117.3M	0.1%	+26,107+6.8%	Added	Holders
Q1 2023	385,592	$107.2M	0.1%	+110,309+40.1%	Added	Holders
Q4 2022	275,283	$76.2M	0.1%	−113,693−29.2%	Reduced	Holders
Q3 2022	388,976	$103.9M	0.1%	−50,425−11.5%	Reduced	Holders
Q2 2022	439,401	$89.6M	0.1%	+41,880+10.5%	Added	Holders
Q1 2022	397,521	$83.7M	0.1%	+52,172+15.1%	Added	Holders
Q4 2021	345,349	$82.9M	0.1%	+16,541+5.0%	Added	Holders
Q3 2021	328,808	$93.0M	0.1%	−103,298−23.9%	Reduced	Holders
Q2 2021	432,106	$149.6M	0.2%	+10,447+2.5%	Added	Holders
Q1 2021	421,659	$118.0M	0.1%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.