COR

CORESITE RLTY CORP

8 superinvestors own COR

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Mairs & Power	Mairs & Power Growth Fund	1.47%	1,057,458	$146.5M	2021Q3	Reduced
Viking Global Investors	Viking Global Investors	1.44%	1,778,135	$555.7M	2025Q3	Reduced
David Einhorn	Greenlight Capital	0.78%	535,000	$42.4M	2016Q2	New
Christopher Davis	Davis Selected Advisers	0.03%	47,455	$6.6M	2021Q3	Held
Bill Nygren	Oakmark Select Fund – Harris Associates	0.02%	34,900	$910K	2009Q4	Reduced
Meridian / ArrowMark	Meridian Contrarian Fund	0.01%	3,800	$249K	2014Q1	Held
Kenneth Fisher	Fisher Asset Management	0.00%	2,937	$923K	2026Q1	Added
Richard Pzena	Pzena Investment Management	0.00%	980	$273K	2025Q1	Reduced

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 COR 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.