641 hedge funds and large institutions have $12.1B invested in MasTec in 2025 Q3 according to their latest regulatory filings, with 138 funds opening new positions, 202 increasing their positions, 219 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

1.56% more ownership

Funds ownership: 70.75%72.31% (+1.6%)

4% less call options, than puts

Call options by funds: $116M | Put options by funds: $121M

8% less repeat investments, than reductions

Existing positions increased: 202 | Existing positions reduced: 219

Holders
641
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
18
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$116M
Puts
$121M
Net Calls
Net Calls Change

Top Sellers

1 -$106M
2 -$89.6M
3 -$64.6M
4
Millennium Management
Millennium Management
New York
-$52M
5
Jane Street
Jane Street
New York
-$51.4M
Name Holding Trade Value Shares
Change
Change in
Stake
HS
301
HighVista Strategies
Massachusetts
$1.43M
CWIG
302
Chung Wu Investment Group
Texas
$1.41M
SOADOR
303
State of Alaska Department of Revenue
Alaska
$1.4M
O
304
Ossiam
France
$1.39M
Massachusetts Financial Services
305
Massachusetts Financial Services
Massachusetts
$1.38M
NYLIM
306
New York Life Investment Management
New York
$1.36M
PCM
307
Polymer Capital Management
New York
$1.36M
Neuberger Berman Group
308
Neuberger Berman Group
New York
$1.35M
LTAS
309
Linden Thomas Advisory Services
North Carolina
$1.3M
Federated Hermes
310
Federated Hermes
Pennsylvania
$1.29M
IWM
311
IHT Wealth Management
Illinois
$1.27M
LP
312
LMR Partners
United Kingdom
$1.27M
WLG
313
Williamson Legacy Group
Indiana
$1.26M
VPIM
314
Vanguard Personalized Indexing Management
California
$1.25M
Alyeska Investment Group
315
Alyeska Investment Group
Illinois
$1.24M
BJL
316
Brighton Jones LLC
Washington
$1.21M
SG Americas Securities
317
SG Americas Securities
New York
$1.2M
KIM
318
Kestra Investment Management
Texas
$1.18M
MFG
319
Merit Financial Group
Georgia
$1.13M
Public Employees Retirement Association of Colorado
320
Public Employees Retirement Association of Colorado
Colorado
$1.13M
QCG
321
Quadrant Capital Group
Ohio
$1.12M
KCM
322
KRS Capital Management
Michigan
$1.11M
DFCM
323
Dark Forest Capital Management
Puerto Rico
$1.08M
AS
324
Altshuler Shaham
Israel
$1.07M
CIS
325
Custom Index Systems
New York
$1.02M