StockSEC filings
MASTEC INC (MTZ): Insider Trades and Fund Holdings
What insiders and tracked funds have reported about MASTEC INC in SEC filings.
0Insider buys, 12 months
$0Bought by insiders, 12 months
$0Sold by insiders, 12 months
5Tracked funds holding
Tracked funds that report MTZ
From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.
| Fund | Shares | Value | Change |
|---|---|---|---|
| Lone Pine Capital | 1,345,157 | $559.7M | ▼ −12.1% |
| Coatue Management | 517,250 | $215.2M | ▼ −11.4% |
| Third Point | 290,000 | $120.7M | ▼ −9.4% |
| Soros Fund Management | 8,275 | $3.44M | ▲ +110.5% |
| Bridgewater Associates | 6,969 | $2.90M | ▼ −82.6% |
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →