MasTec, Inc.
US ˙ NYSE ˙ US5763231090

SecurityMTZ / MasTec, Inc.
InstitutionNavellier & Associates Inc
Latest Disclosed Ownership21,409 shares
Latest Disclosed Value $ 6,888,132
Navellier & Associates Inc reports 1,000.72% increase in ownership of MTZ / MasTec, Inc.

On May 7, 2026 - Navellier & Associates Inc filed a 13F-HR form disclosing ownership of 21,409 shares of MasTec, Inc. (US:MTZ) valued at $6,888,132 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 1,945 shares of MasTec, Inc.. This represents a change in shares of 1,000.72% during the quarter. The current value of the position is $7,790,521 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F MasTec COM 576323109 21,409 19,464 1,000.72 6,888 1,532.23 0.7179
2026-02-03 2025-12-31 13F MasTec com 576323109 1,945 0 0.00 423 2.18 0.0474
2025-11-06 2025-09-30 13F MasTec COM 576323109 1,945 0 0.00 414 24.77 0.0420
2025-08-07 2025-06-30 13F MasTec COM 576323109 1,945 0 0.00 331 18.64 0.0411
2025-05-06 2025-03-31 13F MasTec COM 576323109 1,945 0 0.00 279 5.68 0.0386
2025-02-03 2024-12-31 13F MasTec COM 576323109 1,945 0 0.00 265 10.46 0.0317
2024-11-12 2024-09-30 13F MasTec COM 576323109 1,945 0 0.00 239 14.90 0.0325
2024-08-08 2024-06-30 13F MasTec COM 576323109 1,945 1,945 208 0.0244
2020-05-13 2020-03-31 13F Mastec COM 576323109 0 -4,340 -100.00 0 -100.00
2020-02-12 2019-12-31 13F Mastec COM 576323109 4,340 -2 -0.05 278 -1.42 0.0448
2019-10-16 2019-09-30 13F Mastec COM 576323109 4,342 40 0.93 282 27.03 0.0467
2019-07-17 2019-06-30 13F Mastec COM 576323109 4,302 4,302 222 0.0343
2018-05-21 2018-03-31 13F Mastec COM 576323109 0 -8,690 -100.00 0 -100.00
2018-02-12 2017-12-31 13F Mastec COM 576323109 8,690 -46,560 -84.27 425 -83.42 0.0795
2017-11-14 2017-09-30 13F Mastec COM 576323109 55,250 1,203 2.23 2,564 5.08 0.4980
2017-08-24 2017-06-30 13F Mastec COM 576323109 54,047 -5,539 -9.30 2,440 2.26 0.3646
2017-04-21 2017-03-31 13F Mastec COM 576323109 59,586 44,274 289.15 2,386 307.17 0.3477
2017-02-13 2016-12-31 13F Mastec COM 576323109 15,312 15,312 586 0.0969
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.