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Home > Insider Trading > Biogen Inc.

Biogen Inc. (BIIB)

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No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	17,032,839	$2,330,773,689	0.04%
2.	Primecap Management Co	15,943,259	$2,181,675,561	1.8%
3.	Blackrock, Inc.	15,211,036	$2,081,478,238	0.04%
4.	Pacer Advisors, Inc.	1,352,560	$185,084,310	0.43%
5.	Schwab Charles Investment Management Inc	1,019,219	$139,469,928	0.03%