Muhlenkamp & Co Inc

SEC CIK: 0001133219
Latest filing: Aug 17, 2026

SEC filings (opens in a new tab)

BIIB holding history

Biogen Inc. in every 13F filed by Muhlenkamp & Co 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 (Q3 2021): 0; Sold out in Q3 2021
Value: $0
% of portfolio: 0.0%
Quarters held: 2; Since Q1 2021

Holdings of BIIB by Muhlenkamp & Co Inc, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q3 2021	0	$0	0.0%	−18,218−100.0%	Sold out	Holders
Q2 2021	18,218	$6.31M	2.3%	+34+0.2%	Added	Holders
Q1 2021	18,184	$6.36M	2.4%	–	–	Holders

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