SNY

SANOFI

13 superinvestors own SNY

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Francis Chou	Chou Associates	3.73%	410,000	$16.5M	2011Q2	New
Tweedy Browne Co.	Tweedy Browne Value Fund	1.52%	799,648	$26.3M	2008Q3	Reduced
Dodge & Cox	Dodge & Cox	0.78%	29,504,632	$1.4B	2026Q1	Reduced
Sarah Ketterer	Causeway Capital Management	0.63%	1,064,516	$51.3M	2026Q1	Held
Bill Nygren	Oakmark Select Fund – Harris Associates	0.25%	3,231,940	$130.7M	2016Q4	Reduced
Kenneth Fisher	Fisher Asset Management	0.19%	11,442,163	$551.3M	2026Q1	Reduced
William Von Mueffling	Cantillon Capital Management	0.12%	160,600	$6.5M	2007Q2	New
Warren Buffett	Berkshire Hathaway	0.08%	3,701,012	$148.1M	2018Q2	Held
Viking Global Investors	Viking Global Investors	0.06%	326,290	$15.8M	2024Q2	New
First Eagle Investment Management	First Eagle Investment Management	0.03%	355,667	$17.2M	2025Q2	Reduced
Meridian / ArrowMark	Meridian Contrarian Fund	0.02%	11,800	$666K	2014Q3	Held
Lee Ainslie	Maverick Capital	0.01%	24,581	$1.2M	2026Q1	New
Richard Pzena	Pzena Investment Management	0.00%	19,088	$920K	2026Q1	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 SNY 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.