Which superinvestors hold Mueller Industries Inc (MLI)?

Per the latest SEC 13F filings, 3 superinvestors hold Mueller Industries Inc (MLI): Ray Dalio, Jeremy Grantham, Polen Capital. Combined value held is about $9.5M, with Ray Dalio the largest holder.

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Mueller Industries Inc

MLI

Held by 3 superinvestors.

Price$63.45

Holders3

Total value$9.5M

SEC 10-K · fundamentals

Business quality

as of 2025-12-27

Valuation basis: trailing twelve months to 2026-06-27 — latest 10-K plus unaudited 10-Q filings.

Revenue growth: +10.9%
Net margin: 18.3%
ROE: 23.8%
FCF margin: 16.4%

Revenue $2.40B → $4.18B · 6y

What makes a business high quality

Valuation · value band

Valuation

Recent stock split — per-share valuation is paused until the next filing restates the share count.

SEC 13F · holders

Superinvestors Holding This Security

3 holders · $9.5M combined · this quarter +0 opened / -0 exited

This quarter2 added1 trimmed

Holders 2 → 3 · last 8q

Investor	Value	Shares	Weight (prev→now)
Ray Dalio	$7.8M	63,177	0.0% → 0.0% ▲
Jeremy Grantham	$1.4M	11,451	0.0% → 0.0% ▼
Polen Capital	$317,923	5,172	0.0% → 0.0% ▲

Ray Dalio
Value$7.8MWeight (prev→now)0.0% → 0.0% ▲
Jeremy Grantham
Value$1.4MWeight (prev→now)0.0% → 0.0% ▼
Polen Capital
Value$317,923Weight (prev→now)0.0% → 0.0% ▲

SEC 13F · notes

Written summary

Mueller Industries Inc (MLI) is held by 3 of the superinvestors tracked on Compounder, with a combined $9.5M in reported 13F value. The largest position belongs to Ray Dalio, where it makes up 0.0% of the portfolio.

Other notable holders by value include Jeremy Grantham (0.0% of its book) and Polen Capital (0.0% of its book).

Over the latest quarter, 0 of the tracked filers opened a new position in MLI, 2 added to existing ones, 1 trimmed, and 0 sold out entirely.

Holder counts and values reflect the most recent SEC Form 13F filings, through the quarter ended 2026-06-30. Source: SEC EDGAR. A 13F shows only long US-listed positions and can lag the real portfolio by up to 45 days, so this is disclosed long ownership, not a complete picture.

How to read a 13F

SEC 13F · co-ownership

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Also on

Sources· SEC EDGAR 13F as of 2026-06-30 · filed 2026-08-14

Educational data only — not investment advice. 13F positions are self-reported and can lag up to 45 days.

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