DOSSIER · 13F Holders · Q2 2026Industrials · Water, Sewer, Pipeline, Comm & Power Line Construction
MTZ

MASTEC INC

938 institutions still hold MASTEC INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 576323109·Water, Sewer, Pipeline, Comm & Power Line Construction·938 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$13.8B
visible holders
Holders
938
filers reporting
Concentration
23.10%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

MasTec's institutional base shows a sharp split between its largest and smallest holders this quarter. Assenagon Asset Management, still the top holder at 43.2% of MTZ's $124.5 million in tracked institutional value, cut its stake nearly in half — shares down 49.4% (255,222 to 129,199), a $28.4 million reduction that was easily the largest sale among MTZ's 44 institutional holders. Community Trust & Investment Co, the second-largest holder at 24.7% of the book, trimmed a similar 32.9% of its shares. Both sales came during a quarter when MTZ's share price rose roughly 29%, meaning the two largest holders used the rally to take real profits rather than simply watch their stakes appreciate. Underneath that selling, a different pattern emerged: PensionDanmark nearly doubled its position (93.7% more shares), CoreCap Advisors grew its stake 200-fold (from 5 shares to 1,001), and four new holders — including Veracity Capital LLC and Fulton Bank — opened fresh positions. The stock's biggest institutional owners are cashing in gains that its smaller and newer holders are just beginning to build.

MasTec (MTZ) carries $124.5 million in tracked institutional value across 44 holders as of the quarter ended June 30, 2026, and the data implies the stock's share price rose roughly 29% over the quarter — a backdrop that makes this quarter's ownership shifts more legible than a simple price move would explain on its own.

The top two holders sold into the rally
Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$3.2B7.6M0.05%Q2 2026
02
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$1.2B2.8M0.03%Q2 2026
03
Vanguard Portfolio Management
CIK 0002100121· Index
$1.2B2.8M0.05%Q2 2026
04
STATE STREET CORP
CIK 0000093751
$934M2.2M0.03%Q2 2026
05
Hill City Capital, LP
CIK 0001837343
$897M2.2M20.94%Q2 2026
06
JPMORGAN CHASE & CO
CIK 0000019617
$567M1.3M0.03%Q2 2026
07
LONE PINE CAPITAL LLC
CIK 0001061165
$560M1.3M3.42%Q2 2026
08
BANK OF AMERICA CORP /DE/
CIK 0000070858
$556M1.3M0.04%Q2 2026
09
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$553M1.3M0.33%Q2 2026
10
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$530M1.3M0.03%Q2 2026
11
Invesco Ltd.
CIK 0000914208
$516M1.2M0.04%Q2 2026
12
VICTORY CAPITAL MANAGEMENT INC
CIK 0001040188
$503M1.2M0.28%Q2 2026
13
Hood River Capital Management LLC
CIK 0001578177
$488M1.2M3.54%Q2 2026
14
FMR LLC
CIK 0000315066
$370M890K0.02%Q2 2026
15
PECONIC PARTNERS LLC
CIK 0001050464
$348M1.6M8.27%Q4 2025
16
AMERIPRISE FINANCIAL INC
CIK 0000820027
$306M735K0.06%Q2 2026
17
Bank of New York Mellon Corp
CIK 0001390777
$281M674K0.05%Q2 2026
18
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
CIK 0001705339
$275M660K0.33%Q2 2026
19
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$274M658K0.10%Q2 2026
20
MORGAN STANLEY
CIK 0000895421
$272M654K0.01%Q2 2026
Page 1 of 47
918 more holders available. Log in →
Insiders at MASTEC INC
Parker Ava LJohnson Julia LCsiszar Ernst NPalomarez Javier AlbertoCampbell C RobertDwyer Robert JLove Timothy MichaelDe Cardenas Alberto