Spears Abacus Advisors LLC

SEC CIK: 0001426319
Latest filing: Aug 11, 2026

SEC filings (opens in a new tab)

BIIB holding history

Biogen Inc. in every 13F filed by Spears Abacus Advisors LLC, 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): 5,083
Value: $1.10M
% of portfolio: <0.1%
Quarters held: 22; Since Q1 2021

Holdings of BIIB by Spears Abacus Advisors LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	5,083	$1.10M	<0.1%	00.0%	Unchanged	Holders
Q1 2026	5,083	$931.9K	<0.1%	+4+0.1%	Added	Holders
Q4 2025	5,079	$893.9K	<0.1%	00.0%	Unchanged	Holders
Q3 2025	5,079	$711.5K	<0.1%	+19+0.4%	Added	Holders
Q2 2025	5,060	$635.5K	<0.1%	+4+0.1%	Added	Holders
Q1 2025	5,056	$691.9K	<0.1%	+10.0%	Added	Holders
Q4 2024	5,055	$773.0K	<0.1%	00.0%	Unchanged	Holders
Q3 2024	5,055	$979.9K	<0.1%	00.0%	Unchanged	Holders
Q2 2024	5,055	$1.17M	<0.1%	−225−4.3%	Reduced	Holders
Q1 2024	5,280	$1.14M	<0.1%	00.0%	Unchanged	Holders
Q4 2023	5,280	$1.37M	0.1%	00.0%	Unchanged	Holders
Q3 2023	5,280	$1.36M	0.1%	00.0%	Unchanged	Holders
Q2 2023	5,280	$1.50M	0.1%	00.0%	Unchanged	Holders
Q1 2023	5,280	$1.47M	0.1%	00.0%	Unchanged	Holders
Q4 2022	5,280	$1.46M	0.1%	00.0%	Unchanged	Holders
Q3 2022	5,280	$1.41M	0.1%	00.0%	Unchanged	Holders
Q2 2022	5,280	$1.08M	0.1%	00.0%	Unchanged	Holders
Q1 2022	5,280	$1.11M	0.1%	00.0%	Unchanged	Holders
Q4 2021	5,280	$1.27M	0.1%	00.0%	Unchanged	Holders
Q3 2021	5,280	$1.49M	0.1%	00.0%	Unchanged	Holders
Q2 2021	5,280	$1.83M	0.1%	00.0%	Unchanged	Holders
Q1 2021	5,280	$1.48M	0.1%	–	–	Holders

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