MTZ
Mastec Inc
2 of the 83 super-investors we track hold MTZ, worth a combined $680M per their latest 13F filings. The largest position: Stephen Mandel at 3.4% of their portfolio. No cohort buying or selling was filed on the name this quarter. Conviction score: 16 of 100 (how strongly the cohort backs it) — ranked #700 of 742 stocks. Conviction easing: 1 fewer super-investor hold it than in 2026Q1.
Why super-investors own MTZ
MTZ is held by 2 super-investors in our cohort, with a combined position value of $680M. The highest-conviction owner is Stephen Mandel at 3.4% of their portfolio.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q4 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (2) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Stephen Mandel | 3.4% | 2q | $560M | 1,345,157 |
| 2 | Daniel Loeb | 2.6% | 4q | $121M | 290,000 |
Owners of MTZ also hold
Congress is trading MTZ
Congress tracker →- Markwayne Mullinsold$15,001 - $50,000 · 2026-02-04
- Markwayne Mullinsold$15,001 - $50,000 · 2025-12-18
- Markwayne Mullinsold$15,001 - $50,000 · 2025-12-18
- Lisa McClainsold$1,001 - $15,000 · 2025-10-31
- Lisa McClainbought$1,001 - $15,000 · 2025-10-30
- Lisa McClainsold$1,001 - $15,000 · 2025-10-30
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Long US equity 13F-HR filings only. CUSIP 576323109. Not investment advice.