Position in MTZ
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$155,796,579
+$75,368,014 QoQ
Shares Held
374,457
+49.8% QoQ
Ownership
0.466%
of shares outstanding
% of Portfolio
0.51%
of 13F equity value
Holder Rank
#36
of 910 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority
Sole 92%
Shared 0%
None 8%
Common Shares in MTZ Over Time
Shares Held
Position Value (USD)
Position in Engineering & Construction
Industrials · as of Jun 30, 2026WESTFIELD CAPITAL MANAGEMENT CO LP holds $1,655,511,536 across 8 Engineering & Construction names. MTZ ranks #4 (9.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | FIX |
Comfort Systems USA Inc
|
355,433 | $704,450,434 | |
| 2 | APG |
APi Group Corp
|
6,154,301 | $260,634,647 | |
| 3 | PWR |
Quanta Services, Inc.
|
331,489 | $238,685,339 | |
| 4 | MTZ |
Mastec Inc
This page
|
374,457 | $155,796,579 | |
| 5 | LGN |
Legence Corp.
|
1,341,963 | $114,375,506 | |
| 6 | PRIM |
Primoris Services Corp
|
737,493 | $73,100,306 | |
| 7 | DY |
Dycom Industries Inc
|
141,978 | $71,782,657 | |
| 8 | ECG |
Everus Construction Group, Inc.
|
221,067 | $36,686,068 |
All Filings in MTZ
Export CSV
2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $155,796,579 | 374,457 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $80,428,565 | 249,980 | Shares | Sole | 2026-05-11 | |
| No filing history on record for this holder in this stock. | ||||||