3 tracked superinvestors hold MASTEC INC (MTZ), worth $783M combined, led by Stephen Mandel. Smart money is trimming MTZ as of the latest 13F filings.
Current price
$384.72
+120.9%
1Y
MasTec, Inc., an infrastructure construction company, provides engineering, building, installation, maintenance, and upgrade services for communications, energy, utility, and other infrastructure primarily in the United States and Canada. It operates through Communications, Clean Energy and Infrastructure, Oil and Gas, Power Delivery, and Other segments. The company builds underground and…
Market cap
$32.9B
P/E
82.66
Div yield
0.0%
Revenue YoY
16.2%
Analyst target
$425
Snapshot for context. For deep analysis use a stock screener — this page is about who owns it.
Superinvestors holding
3
tracked 13F / N-PORT funds
Combined value
$783M
disclosed long exposure
Tier-1 conviction
3
concentrated holders
Net this quarter
-1
1 buying · 2 selling
Smart money is net reducing MTZ: 2 funds trimmed versus 1 adding. 1 opened a brand-new position.
MASTEC INC (MTZ) is a genuine cross-fund conviction name: 3 concentrated Tier-1 superinvestors hold it, alongside 0 other tracked funds, for $783M of combined disclosed exposure.
The largest position belongs to Stephen Mandel at 3.9% of their book — no single tracked manager treats it as an outsized, top-weighted bet.
This quarter 1 fund opened a brand-new position (Stephen Mandel), with 0 adding and 2 trimming — a net reduction signal.
| Investor | Move | % of their portfolio | Position value |
|---|---|---|---|
| New buy | 3.9% | $493M | |
| Trimmed | 0.6% | $188M | |
| Trimmed | 4.9% | $103M |
Tier badge = signal quality: 1 concentrated conviction · 2 quant/multi (context) · 3 retail & diversified. Only Tier 1 holdings feed the consensus signal.
Which superinvestors own MTZ?
3 tracked funds hold MASTEC INC (MTZ), the largest being Stephen Mandel (Lone Pine Capital) at 3.9% of its 13F portfolio. 3 of them are concentrated Tier-1 conviction managers.
Is smart money buying or selling MTZ?
In the most recent 13F quarter, 1 tracked fund added or opened MTZ and 2 trimmed it, including 1 brand-new position.
How much MTZ do tracked funds hold?
Combined disclosed long exposure to MTZ across tracked superinvestors is $783M as of the Mar 2026 filings.
Holdings aggregated from the latest SEC 13F & N-PORT filings via FMP · Mar 2026 quarter. Long equity positions only, reported with up to a 45-day delay — for activity between filings see real-time moves. Not financial advice.