ATK

D ALLIANT TECHSYSTEMS INC COMMON

6 superinvestors own ATK

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Chase Coleman	Tiger Global Management	1.90%	135,000	$7.0M	2003Q2	Held
Alex Roepers	Atlantic Investment Management	1.79%	175,000	$15.4M	2009Q4	Reduced
William Von Mueffling	Cantillon Capital Management	1.33%	668,779	$76.1M	2007Q4	Added
First Eagle Investment Management	First Eagle Investment Management	0.83%	2,944,518	$342.3M	2014Q4	Held
Bill Nygren	Oakmark Select Fund – Harris Associates	0.09%	37,000	$3.3M	2009Q4	Held
Jensen Investment Management	Jensen Investment Management	0.01%	4,670	$543K	2014Q4	Added

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 ATK 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.