TCG Advisory Services, LLC

SEC CIK: 0001841815
Latest filing: Jul 31, 2026

SEC filings (opens in a new tab)

BIIB holding history

Biogen Inc. in every 13F filed by TCG Advisory Services, 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): 1,735
Value: $374.9K
% of portfolio: <0.1%
Quarters held: 3; Since Q4 2023

Holdings of BIIB by TCG Advisory Services, LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	1,735	$374.9K	<0.1%	+50+3.0%	Added	Holders
Q1 2026	1,685	$308.9K	<0.1%	+1,685	New	Holders
Q1 2024	0	$0	0.0%	−843−100.0%	Sold out	Holders
Q4 2023	843	$218.1K	<0.1%	+843	New	Holders