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Stock brief · the live tape
MTZMasTec, Inc.
Industrials
$241.00
▼ $46.42 (-16.2%) · 30dclose Friday, August 28, 2026
Disclosed flow leans to the sell side.
2 members · 7 disclosed trades · 29 insider filings
The Hill
▲ 2▼ 5
2 buys · 5 sellsThe Boardroom
▲ 17▼ 12
17 buys · 12 sells · 29 filingsFeeding Time13F lens lands with fund ingestion
What is behind it
Recent Signal Scores, decayed50
Events counted, 90d17
Net congressional flowmixed
The tape
Price with a twin dot per disclosed trade: filled at the trade, hollow at the filing. The dashed gap is what the market did in between, not anyone’s return.
trade (congress)filingtrade (insider)call legput leg
The cost of chasing
Each rail runs from their trade to their filing. The hatched part is the move a copier missed to the disclosure lag; the solid part is what copying at the filing kept.
Mullin+2.4-20.9
Mullin+12.6+6.6
Mullin+12.6+6.6
McClain+12.6+24.8
McClain+12.6+24.8
McClain+18.0+24.8
McClain+47.9+32.7
Median copy kept +24.8% from the filing vs +12.6% from the trade date; the lag took -12.2 pts. The S&P returned +16.7% over the same windows. Numbers describe the window shown; they are not a forecast.
Who is behind it
Congress members with a disclosed position, biggest first. Click through to their dossier.
Markwayne MullinSenateFiled this one in 26dsold$98KLisa C. McClainHouse · Financial Services · Education & WorkforceFiled this one in 22dmixed$32K
Committee overlap is a fact, not an accusation. An option leg behind a share buy reads very differently from a plain purchase, so it is called out but never scored as intent.
The boardroom
Scheduled 10b5-1 sales are usually noise, set on autopilot months ago. The unscheduled ones are the tell.
Campbell C RobertDirectorUnscheduled
Csiszar Ernst NDirectorUnscheduled
Csiszar Ernst NDirectorUnscheduled
Palomarez Javier AlbertoDirectorUnscheduled
Palomarez Javier AlbertoDirectorUnscheduled
Miranda Manuel BenitoDirectorUnscheduled
Parker Ava LDirectorUnscheduled
Parker Ava LDirectorUnscheduled
JOHNSON JULIA LDirectorUnscheduled
Dwyer Robert JDirectorUnscheduled
Dwyer Robert JDirectorUnscheduled
Spiro AlexDirectorUnscheduled
MAS JORGEDirectorUnscheduled
MAS JOSE RAMONCEO, DirectorUnscheduled
MAS JOSE RAMONCEO, DirectorUnscheduled
MAS JORGEDirectorUnscheduled
Csiszar Ernst NDirectorUnscheduled
Palomarez Javier AlbertoDirectorUnscheduled
Campbell C RobertDirectorUnscheduled
Parker Ava LDirectorUnscheduled
Parker Ava LDirectorUnscheduled
Dwyer Robert JDirectorUnscheduled
Dwyer Robert JDirectorUnscheduled
Csiszar Ernst NDirectorUnscheduled
Csiszar Ernst NDirectorUnscheduled
JOHNSON JULIA LDirectorUnscheduled
Palomarez Javier AlbertoDirectorUnscheduled
Campbell C RobertDirectorUnscheduled
Love Timothy MichaelCAOUnscheduled
The forward book
Every disclosed option leg on this ticker: what was filed, and where the strike sits versus today.
No disclosed option legs on MTZ yet. They plot here the day they file.
A call and a put are shown as filed. We do not infer whether a leg is a hedge or a leveraged bet, because the filing does not say. Read the strike and expiry, not an implied intent.
The fund book
Tracked 13F holders and how their position moved, quarter over quarter.
13F fund positions on MTZ light up when fund ingestion lands. Quarter-end marks, up to 45 days lagged, never live holdings.
Cross-check
When different sources file on the same name inside a window. Overlap like this is rare.
No convergence: MTZ is not showing congress and insider filings together in the last 90 days.
Sources file on different clocks; an overlap like this is rare.
⚠️ Public information, sourced from STOCK Act, Form 4 and 13F filings. Ranges use midpoints. Price paths between a trade and its filing are market moves, not anyone’s return. Not financial advice.