GENZ

PHARMACEUTICALS INC. GENZYME CORP

7 superinvestors own GENZ

Based on latest 13F filings — data is 45–90 days delayed

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Carl Icahn	Icahn Capital Management	2.67%	1,518,463	$94.1M	2007Q3	New
David Katz	Matrix Asset Advisors	1.92%	229,521	$16.3M	2010Q4	Reduced
William Von Mueffling	Cantillon Capital Management	0.20%	97,250	$5.6M	2004Q4	Added
First Eagle Investment Management	First Eagle Investment Management	0.00%	3,902	$118K	2011Q1	Reduced
Kenneth Fisher	Fisher Asset Management	0.00%	5,153	$392K	2011Q1	Held
Ruane Cunniff	Sequoia Fund	0.00%	3,400	$241K	2010Q3	Held
Christopher Davis	Davis Selected Advisers	0.00%	0	$259K	2008Q2	Held

Open-market purchases (P) and sales (S) from SEC Form 4 filings · last 12 months

No open-market insider trades in the last 12 months.

Form 4 filings for option exercises and other transaction types are excluded.

STOCK Act disclosures · last 12 months

Congressional trade data coming soon.

We are sourcing STOCK Act disclosures and will display them here shortly.

What Is SEC Form 4?

Understand the insider trade filings behind GENZ activity.

What Is a 13F Filing?

How superinvestors disclose their quarterly holdings.

Insider Cluster Buying

Why multiple insiders buying together is a strong signal.

Superinvestor Consensus

The most widely held stocks across all tracked institutions.