IT

GARTNER GROUP INC NEW-CL A

10 superinvestors own IT

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
ValueAct Capital	ValueAct Capital	10.13%	20,787,437	$402.0M	2008Q1	Held
Meridian / ArrowMark	Meridian Contrarian Fund	0.68%	374,158	$90.6M	2021Q2	Reduced
Bill Nygren	Oakmark Select Fund – Harris Associates	0.66%	3,135,774	$496.5M	2026Q1	Added
Henry Ellenbogen	Durable Capital Partners	0.55%	148,882	$71.0M	2024Q1	Reduced
Wallace Weitz	Weitz Investment Management	0.37%	24,425	$6.2M	2025Q4	New
Daniel Loeb	Third Point	0.33%	55,000	$26.2M	2024Q1	New
David Katz	Matrix Asset Advisors	0.02%	400	$203K	2024Q3	Reduced
Jensen Investment Management	Jensen Investment Management	0.01%	10,270	$239K	2010Q2	Added
Polen Capital Management	Polen Capital Management	0.00%	1,549	$245K	2026Q1	Reduced
Dodge & Cox	Dodge & Cox	0.00%	2,000	$484K	2022Q2	New

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 IT 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.