← Super investors
MTZ
Mastec Inc
3 super-investor ownerscombined $686Mlargest position 4.9%
1 NEW1 TRIM
Cohort owners over time
2025Q3 → 2026Q1How many of the cohort members held this stock each quarter.
Now: 2
Peak: 2
Owners (3) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Stephen Mandel | 3.9% | — 1q | $493M | 1,531,050 |
| 2 | Daniel Loeb | 4.9% | 3q | $103M | 320,000 |
| 3 | Joel Greenblatt | 0.1% | 38q | $90M | 279,778 |
Recent activity (2)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Daniel Loeb | TRIM | 4.9% | -65% | $103M | May 15, 2026 |
| Stephen Mandel | NEW | 3.9% | +100% | $493M | May 15, 2026 |
Long US equity 13F-HR filings only. CUSIP 576323109. Not investment advice.