2026-08-17
AI summary pending
View Full Filing (SEC EDGAR)Mastec Inc
$251.13+1%
+$10.6B
Net Activity
+67.32% total shares
Institutions Holding
916
Popularity Rank
#540
Avg Weight
0.32%
Total Value
$25.7B
Market Cap
$19.8B
916 institutions currently hold MTZ, with 509 net buyers and 375 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
375
Net Buying Institutions
509
Top 5 by Value
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Across its top 20 institutional holders, MTZ's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 11/100, avg. turnover score 37/100).
MTZ ranks #540 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
MTZ is a top-conviction position for Hill City Capital, LP — at 20.9% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in MTZ belongs to BlackRock, Inc., but the position matters far more to Hill City Capital, LP, who has 20.9% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
BlackRock has added to its MTZ position for two straight quarters, increasing it by $1.6B to reach $3.2B today.
Nomura Asset Management International Inc. has trimmed its MTZ position for two straight quarters, cutting it by $93.6M while still holding $24.3M.
MTZ is up 1% today, and institutions have been net buyers of $10.6B this quarter — today's price move and the underlying institutional flow are pointing the same direction.
MTZ posted net income of $494.3M over the trailing twelve months, and currently trades at a P/E of 40.0.
+$4.6B
Total Buy Value
$2.7B
Total Sell Value
509
Net Buyers
375
Net Sellers
MTZ
Q2 2026
Top 5 Institutional Movers
MTZ does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Sell (Full) | Markwayne Mullin Senate | 2026-02-04 | $15K–$50K |
| Sell (Full) | Markwayne Mullin Senate | 2025-12-18 | $15K–$50K |
| Sell (Full) | Markwayne Mullin Senate | 2025-12-18 | $15K–$50K |
| Buy | Markwayne Mullin Senate | 2025-02-03 | $1K–$15K |
| Buy | Markwayne Mullin Senate | 2025-01-02 | $15K–$50K |
| Buy | Markwayne Mullin Senate | 2025-01-02 | $15K–$50K |
No Form 144 planned sale filings in the last 90 days
3
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Jose Ramon Mas | 13D/A | 2026-08-13 | 7.7% |
| Jorge Mas | 13D/A | 2026-08-13 | 14.8% |
| BlackRock, Inc. | 13G/A | 2026-07-29 | 8.1% |
6
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)MasTec (MTZ) signed an underwriting agreement on August 6, 2026 to issue $650 million of 5.850% senior notes due September 30, 2036, with the deal expected to close on August 17, 2026. The company plans to use the proceeds to repay most or all of its $600 million term loan and to cover related fees, with any leftovers going toward general corporate purposes. This 8-K is a standard disclosure of a material financing agreement.
View Full Filing (SEC EDGAR)MasTec (MTZ) filed an 8-K on July 31, 2026, but it's a routine paperwork filing — the company is just adding supporting exhibits to the record: a legal opinion from Holland & Knight LLP (Exhibit 5.1), the firm's consent (Exhibit 23.1), and the cover page in XBRL format. There are no new financial statements or operating results in this one.
View Full Filing (SEC EDGAR)MasTec (ticker: MTZ) filed this 8-K on July 24, 2026, covering its earnings release (Item 2.02), a change in directors or officers (Item 5.02), and Regulation FD disclosure (Item 7.01). That said, the excerpt only contains the section headers — no actual financial figures, no executive names, and no details on what changed.
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)On July 7, 2026, MasTec Inc. (MTZ) and its subsidiary MasTec North America entered into a new $700 million delayed draw term loan agreement with Bank of America as administrative agent. The loan consists of a $400 million three-tranche and a $300 million four-year tranche, and the proceeds will finance part of an acquisition and related expenses. The same day, the company also amended its existing credit facility.
View Full Filing (SEC EDGAR)576323109
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Access MTZ's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/MTZCLI
npx alphasmo stocks get MTZ