How many institutional investors hold MTZ?

9 tracked institutional investors disclosed a position in MTZ (MASTEC INC) in their most recent 13F filing.

Who is the largest institutional holder of MTZ?

Steve Mandel, Lone Pine Capital, holds the largest disclosed position in MTZ, valued at $560M.

Where does this MTZ ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

MTZ — MASTEC INC

Name: MASTEC INC (MTZ) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Public company

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying MTZ?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence

Institutional Conviction

Net distribution · 1 buying vs 4 selling last quarter

Macro Tailwind

Macro conditions are mixed for this sector

Why? — Evidence & Confidence ▾

Of 5 tracked investors who changed their MTZ position last quarter, 1 bought and 4 sold (20% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime).

Supporting evidence

+1 tracked investor added or increased positions last quarter (George Soros)
+9 tracked investors reported holding MTZ at their latest filing
+Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource

Contradicting evidence — always shown

−4 tracked investors reduced or exited last quarter (4 reduced, 0 sold out)
−13F data is disclosed up to 45 days after quarter end — positions may have changed since

Know the limits

· 13F disclosure lag (up to 45 days)
· Tracked investors are a sample, not the whole market
· Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.

About MASTEC INC (MTZ)

MASTEC INC (MTZ) appears in the most recent 13F filings of 9 tracked institutional investors. The largest disclosed position is held by Steve Mandel (Lone Pine Capital), valued at $560M. Across recent filings, tracked investors recorded 9 new positions, 6 increased, 10 reduced, and 3 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in MTZ

/100

Mixed Activity

Added / Increased15

Reduced10

Exited3

BearishBullish

Crowded Trade Score™

How many top investors track MTZ

/100

Popular Trade

9investors

This stock has strong institutional presence.

UndiscoveredCrowded

151015+

MTZ Ownership Composition

How MASTEC INC is held across tracked investor types, based on reported 13F positions.

Dominant Type

Growth & Innovation

66% of tracked value

Institutions

tracked investors

Total Reported

$1.2B

combined 13F value

Growth & Innovation66.5%
Multi-Strategy / Quant22.5%
Activist10.4%
Macro0.7%

Growth & Innovation(2)

66.5%

Multi-Strategy / Quant(3)

22.5%

Activist(1)

10.4%

Macro(3)

0.7%

Tracked investors currently reporting MTZ

Investor	Firm	Shares	Market value	% of portfolio	As of
Steve Mandel	Lone Pine Capital	1.3M	$559.7M	3.42%	Jun 30, 2026
Izzy Englander	Millennium Management	47.1K	$19.6M	0.01%	Jun 30, 2026
Philippe Laffont	Coatue Management	517.3K	$215.2M	0.44%	Jun 30, 2026
Ken Griffin	Citadel Advisors	405.4K	$168.7M	0.02%	Jun 30, 2026
Daniel Loeb	Third Point LLC	290K	$120.7M	2.58%	Jun 30, 2026
Steve Cohen	Point72 Asset Management	177.5K	$73.9M	0.08%	Jun 30, 2026
Paul Tudor Jones	Tudor Investment Corp	3.5K	$1.5M	0.00%	Jun 30, 2026
Ray Dalio	Bridgewater Associates	7K	$2.9M	0.01%	Jun 30, 2026
George Soros	Soros Fund Management	8.3K	$3.4M	0.04%	Jun 30, 2026

Steve MandelJun 30, 2026
Lone Pine Capital
Shares
1.3M
Value
$559.7M
% Portfolio
3.42%
Izzy EnglanderJun 30, 2026
Millennium Management
Shares
47.1K
Value
$19.6M
% Portfolio
0.01%
Philippe LaffontJun 30, 2026
Coatue Management
Shares
517.3K
Value
$215.2M
% Portfolio
0.44%
Ken GriffinJun 30, 2026
Citadel Advisors
Shares
405.4K
Value
$168.7M
% Portfolio
0.02%
Daniel LoebJun 30, 2026
Third Point LLC
Shares
290K
Value
$120.7M
% Portfolio
2.58%
Steve CohenJun 30, 2026
Point72 Asset Management
Shares
177.5K
Value
$73.9M
% Portfolio
0.08%
Paul Tudor JonesJun 30, 2026
Tudor Investment Corp
Shares
3.5K
Value
$1.5M
% Portfolio
0.00%
Ray DalioJun 30, 2026
Bridgewater Associates
Shares
7K
Value
$2.9M
% Portfolio
0.01%
George SorosJun 30, 2026
Soros Fund Management
Shares
8.3K
Value
$3.4M
% Portfolio
0.04%

Recent activity

Investor	Action	Δ %	Current value	Filing date
Steve Mandel	New	—	$492.6M	May 15, 2026
Steve Mandel	Reduced	-12.14%	$559.7M	Aug 14, 2026
Daniel Loeb	New	—	$154.3M	Nov 14, 2025
Daniel Loeb	Increased	27.59%	$201.1M	Feb 17, 2026
Daniel Loeb	Reduced	-65.41%	$103M	May 15, 2026
Daniel Loeb	Reduced	-9.38%	$120.7M	Aug 14, 2026
George Soros	New	—	$3.2M	Feb 13, 2026
George Soros	Reduced	-73.27%	$1.3M	May 15, 2026
George Soros	Increased	110.51%	$3.4M	Aug 14, 2026
Ken Griffin	New	—	$38.7K	Nov 14, 2025
Ken Griffin	Increased	14.44%	$45.3K	Feb 17, 2026
Ray Dalio	New	—	$5.2M	Aug 13, 2025
Ray Dalio	Sold	-100.00%	$0	Nov 13, 2025
Ray Dalio	New	—	$2.3K	Feb 13, 2026
Ray Dalio	Increased	274.28%	$12.9M	May 15, 2026
Ray Dalio	Reduced	-82.64%	$2.9M	Aug 14, 2026
Steve Cohen	Increased	57.73%	$94.1M	Nov 14, 2024
Steve Cohen	Reduced	-3.95%	$100M	Feb 14, 2025
Steve Cohen	Reduced	-71.94%	$24M	Jul 21, 2025
Steve Cohen	Increased	334.67%	$152.6M	Aug 14, 2025
Steve Cohen	Reduced	-26.50%	$140.1M	Nov 14, 2025
Steve Cohen	Sold	-100.00%	$0	Feb 17, 2026
Philippe Laffont	New	—	$147.4M	May 15, 2026
Philippe Laffont	Reduced	-13.91%	$187.8M	May 15, 2026
Philippe Laffont	Reduced	-11.37%	$215.2M	Aug 14, 2026
Paul Tudor Jones	New	—	$2.2M	Aug 14, 2024
Paul Tudor Jones	Sold	-100.00%	$0	Nov 14, 2024
Steve Cohen	New	—	$51.8M	Sep 16, 2024

Steve Mandel
New
$492.6MMay 15, 2026
Steve Mandel
Reduced
$559.7M(-12.14%)Aug 14, 2026
Daniel Loeb
New
$154.3MNov 14, 2025
Daniel Loeb
Increased
$201.1M(27.59%)Feb 17, 2026
Daniel Loeb
Reduced
$103M(-65.41%)May 15, 2026
Daniel Loeb
Reduced
$120.7M(-9.38%)Aug 14, 2026
George Soros
New
$3.2MFeb 13, 2026
George Soros
Reduced
$1.3M(-73.27%)May 15, 2026
George Soros
Increased
$3.4M(110.51%)Aug 14, 2026
Ken Griffin
New
$38.7KNov 14, 2025
Ken Griffin
Increased
$45.3K(14.44%)Feb 17, 2026
Ray Dalio
New
$5.2MAug 13, 2025
Ray Dalio
Sold
$0(-100.00%)Nov 13, 2025
Ray Dalio
New
$2.3KFeb 13, 2026
Ray Dalio
Increased
$12.9M(274.28%)May 15, 2026
Ray Dalio
Reduced
$2.9M(-82.64%)Aug 14, 2026
Steve Cohen
Increased
$94.1M(57.73%)Nov 14, 2024
Steve Cohen
Reduced
$100M(-3.95%)Feb 14, 2025
Steve Cohen
Reduced
$24M(-71.94%)Jul 21, 2025
Steve Cohen
Increased
$152.6M(334.67%)Aug 14, 2025
Steve Cohen
Reduced
$140.1M(-26.50%)Nov 14, 2025
Steve Cohen
Sold
$0(-100.00%)Feb 17, 2026
Philippe Laffont
New
$147.4MMay 15, 2026
Philippe Laffont
Reduced
$187.8M(-13.91%)May 15, 2026
Philippe Laffont
Reduced
$215.2M(-11.37%)Aug 14, 2026
Paul Tudor Jones
New
$2.2MAug 14, 2024
Paul Tudor Jones
Sold
$0(-100.00%)Nov 14, 2024
Steve Cohen
New
$51.8MSep 16, 2024

Frequently asked questions

How many institutional investors hold MTZ?: 9 tracked institutional investors disclosed a position in MTZ (MASTEC INC) in their most recent 13F filing.
Who is the largest institutional holder of MTZ?: Steve Mandel, Lone Pine Capital, holds the largest disclosed position in MTZ, valued at $560M.
Did institutional ownership of MTZ increase or decrease?: Across recent 13F filings, tracked investors recorded 9 new positions, 6 increased, 10 reduced, and 3 fully exited MTZ.
Where does this MTZ ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.