MTZ · CUSIP 576323109
MASTEC INC
Reported by 2 of 79 curated managers in Q2 2026, in the holdings snapshot last exported 2026-08-24.
- Managers holding
- 2
- Average portfolio weight
- 3.0%
- Combined reported value
- $680.3M
- Research group
- 79
2 of the 79 superinvestors Shameless Cloning tracks reported MASTEC INC (MTZ) in their Q2 2026 13F filings, worth $680.3M combined, at an average 3.0% of their portfolios. The largest positions by portfolio weight belong to Stephen Mandel (3.4%), Daniel Loeb (2.6%).
Reporting managers
This is a historical 13F snapshot, not a live shareholder register. The count covers all matched managers; dashboard rankings use only those with at least 95% coverage. Reported value is measured at filing quarter-end, not at today's price.
| Manager / SEC filer | % of portfolio | Reported value |
|---|---|---|
| Stephen MandelLONE PINE CAPITAL LLC | 3.4% | $559.7M |
| Daniel LoebThird Point LLC | 2.6% | $120.7M |