TCW Group Inc

SEC CIK: 0000850401
Latest filing: Aug 3, 2026

SEC filings (opens in a new tab)

BIIB holding history

Biogen Inc. in every 13F filed by TCW Group Inc, 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): 2,461
Value: $531.7K
% of portfolio: <0.1%
Quarters held: 3; Since Q4 2025

Holdings of BIIB by TCW Group Inc, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	2,461	$531.7K	<0.1%	+123+5.3%	Added	Holders
Q1 2026	2,338	$428.6K	<0.1%	+112+5.0%	Added	Holders
Q4 2025	2,226	$391.8K	<0.1%	+2,226	New	Holders