IBM

INTERNATIONAL BUSINESS MACHS

$242.39

Closing price as of Mar 31, 2026

25 superinvestors own IBM

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Seth Klarman	Baupost Group	10.92%	400,000	$41.6M	2002Q1	New
Michael Burry	Scion Asset Management	8.61%	50,000	$6.9M	2015Q4	New
Valley Forge Capital Management	Valley Forge Capital Management	2.91%	31,353	$5.1M	2011Q1	Held
Francois Rochon	Giverny Capital	2.63%	96,001	$13.2M	2015Q4	Reduced
Hillman Capital Management	Hillman Value Fund	2.21%	23,301	$3.1M	2019Q4	Added
William Von Mueffling	Cantillon Capital Management	1.49%	712,184	$83.9M	2007Q3	Reduced
David Tepper	Appaloosa Management	1.49%	250,000	$23.6M	2007Q1	Reduced
Tweedy Browne Co.	Tweedy Browne Value Fund	0.93%	234,755	$34.1M	2017Q3	Held
Bill Miller	Miller Value Partners	0.41%	53,910	$10.2M	2014Q3	Added
Bruce Berkowitz	Fairholme Capital	0.27%	47,900	$6.6M	2015Q4	Reduced
Chase Coleman	Tiger Global Management	0.25%	141,823	$20.6M	2015Q3	Held
Warren Buffett	Berkshire Hathaway	0.16%	2,048,045	$314.2M	2017Q4	Reduced
Thomas Gayner	Markel Group	0.06%	10,400	$1.2M	2007Q3	New
Kahn Brothers Group	Kahn Brothers Group	0.05%	1,228	$298K	2026Q1	Held
David Katz	Matrix Asset Advisors	0.02%	819	$243K	2025Q4	Reduced
Christopher Davis	Davis Selected Advisers	0.01%	20,168	$3.1M	2016Q1	Added
Mairs & Power	Mairs & Power Growth Fund	0.01%	3,647	$884K	2026Q1	Added
Jensen Investment Management	Jensen Investment Management	0.01%	2,750	$417K	2016Q2	Reduced
Meridian / ArrowMark	Meridian Contrarian Fund	0.01%	3,448	$523K	2016Q2	Held
Dodge & Cox	Dodge & Cox	0.01%	46,587	$11.3M	2026Q1	Held
First Eagle Investment Management	First Eagle Investment Management	0.01%	32,122	$4.9M	2017Q4	Held
Kenneth Fisher	Fisher Asset Management	0.00%	24,688	$6.0M	2026Q1	Added
Ruane Cunniff	Sequoia Fund	0.00%	2,730	$475K	2017Q1	Reduced
Thomas Russo	Gardner Russo & Quinn	0.00%	750	$222K	2025Q4	New
Bill Nygren	Oakmark Select Fund – Harris Associates	0.00%	3,977	$532K	2023Q2	Added

Recent insider activity — IBM

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.

Congressional trades — IBM

STOCK Act disclosures · last 12 months

Congressional trade data coming soon.

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

Learn more

What Is SEC Form 4?

Understand the insider trade filings behind IBM 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.