MasTec, Inc.
US ˙ NYSE ˙ US5763231090

SecurityMTZ / MasTec, Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership47,588 shares
Latest Disclosed Value $ 15,310,963
Strs Ohio reports 3,093.83% increase in ownership of MTZ / MasTec, Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 47,588 shares of MasTec, Inc. (US:MTZ) valued at $15,310,963 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 1,490 shares of MasTec, Inc.. This represents a change in shares of 3,093.83% during the quarter. The current value of the position is $17,832,651 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)
2026-04-24 2026-03-31 13F MASTEC COM_STK 576323109 47,588 46,098 3,093.83 15,311 4,639.94 0.0607
2026-02-02 2025-12-31 13F MASTEC COM_STK 576323109 1,490 3 0.20 324 2.22 0.0012
2025-10-30 2025-09-30 13F MASTEC COM_STK 576323109 1,487 -7,040 -82.56 316 -78.25 0.0012
2025-08-04 2025-06-30 13F MASTEC COM_STK 576323109 8,527 -747 -8.05 1,453 34.29 0.0054
2025-05-28 2025-03-31 13F MASTEC COM_STK 576323109 9,274 -1,493 -13.87 1,082 -26.14 0.0045
2025-05-28 2024-12-31 13F MASTEC COM_STK 576323109 10,767 -1,613 -13.03 1,466 -3.81 0.0058
2024-11-01 2024-09-30 13F MASTEC COM_STK 576323109 12,380 1,238 11.11 1,524 27.77 0.0059
2024-08-05 2024-06-30 13F MASTEC COM_STK 576323109 11,142 11,142 1,192 0.0047
2024-01-30 2023-12-31 13F MASTEC COM 576323109 0 -17,859 -100.00 0 -100.00
2023-10-26 2023-09-30 13F/A-1 MASTEC COM 576323109 17,859 4,137 30.15 1 0.00 0.0057
2023-10-26 2023-09-30 13F MASTEC COM 576323109 17,859 1
2023-07-31 2023-06-30 13F MASTEC COM 576323109 13,722 -4,936 -26.46 2 0.00 0.0068
2023-08-02 2023-03-31 13F/A-2 MASTEC COM 576323109 18,658 -224 -1.19 2 0.00 0.0076
2023-08-02 2023-03-31 13F/A-1 MASTEC COM 576323109 18,658 2
2023-04-27 2023-03-31 13F MASTEC COM 576323109 18,658 -224 2 0.0091
2023-01-26 2022-12-31 13F MASTEC COM 576323109 18,882 4,543 31.68 2 -99.89 0.0073
2022-10-27 2022-09-30 13F MASTEC COM 576323109 14,339 810 5.99 910 -6.09 0.0043
2022-07-25 2022-06-30 13F MASTEC COM 576323109 13,529 713 5.56 969 -13.17 0.0044
2022-04-21 2022-03-31 13F MASTEC COM 576323109 12,816 -1,744 -11.98 1,116 -16.90 0.0041
2022-01-24 2021-12-31 13F MASTEC COM 576323109 14,560 -3,515 -19.45 1,343 -13.86 0.0047
2021-10-22 2021-09-30 13F MASTEC COM 576323109 18,075 1,761 10.79 1,559 -9.88 0.0059
2021-07-26 2021-06-30 13F MASTEC COM 576323109 16,314 10,214 167.44 1,730 202.98 0.0062
2021-04-23 2021-03-31 13F MASTEC COM 576323109 6,100 1,200 24.49 571 70.96 0.0021
2021-01-25 2020-12-31 13F MASTEC COM 576323109 4,900 2,100 75.00 334 183.05 0.0013
2020-12-14 2020-09-30 13F MASTEC COM 576323109 2,800 -1,700 -37.78 118 -41.29 0.0005
2020-07-23 2020-06-30 13F MASTEC COM 576323109 4,500 2,700 150.00 201 246.55 0.0009
2020-04-23 2020-03-31 13F MASTEC COM 576323109 1,800 -22,300 -92.53 58 -96.25 0.0003
2020-01-24 2019-12-31 13F MASTEC COM 576323109 24,100 16,500 217.11 1,546 213.59 0.0065
2019-10-21 2019-09-30 13F/A-1 MASTEC COM 576323109 7,600 2,500 49.02 493 88.17 0.0022
2019-10-21 2019-09-30 13F MASTEC COM 576323109 7,600 -16,500 493 2,182.0453
2019-07-25 2019-06-30 13F MASTEC COM 576323109 5,100 -300 -5.56 262 1.16 0.0012
2019-04-19 2019-03-31 13F MASTEC COM 576323109 5,400 1,100 25.58 259 48.85 0.0012
2019-01-23 2018-12-31 13F MASTEC COM 576323109 4,300 700 19.44 174 8.75 0.0009
2018-10-19 2018-09-30 13F MASTEC COM 576323109 3,600 -2,900 -44.62 160 -51.37 0.0007
2018-08-06 2018-06-30 13F MASTEC COM 576323109 6,500 -400 -5.80 329 1.54 0.0014
2018-04-20 2018-03-31 13F MASTEC COM 576323109 6,900 600 9.52 324 5.19 0.0014
2018-01-23 2017-12-31 13F MASTEC COM 576323109 6,300 -300 -4.55 308 0.65 0.0013
2017-10-23 2017-09-30 13F MASTEC COM 576323109 6,600 0 0.00 306 3.03 0.0013
2017-07-26 2017-06-30 13F MASTEC COM 576323109 6,600 1,500 29.41 297 45.59 0.0013
2017-04-26 2017-03-31 13F MASTEC COM 576323109 5,100 0 0.00 204 4.62 0.0009
2017-01-24 2016-12-31 13F MASTEC COM 576323109 5,100 -117,000 -95.82 195 -94.63 0.0009
2016-10-27 2016-09-30 13F MASTEC COM 576323109 122,100 -77,900 -38.95 3,631 -18.66 0.0162
2016-07-26 2016-06-30 13F MASTEC COM 576323109 200,000 -50,000 -20.00 4,464 -11.78 0.0198
2016-04-25 2016-03-31 13F/A-1 MASTEC COM 576323109 250,000 -350,000 -58.33 5,060 -51.48 0.0227
2016-01-28 2015-12-31 13F MASTEC COM 576323109 600,000 -321,222 -34.87 10,428 -28.49 0.0466
2015-10-21 2015-09-30 13F MASTEC COM 576323109 921,222 -625,200 -40.43 14,582 -52.54 0.0694
2015-08-04 2015-06-30 13F MASTEC COM 576323109 1,546,422 300,000 24.07 30,727 27.74 0.1349
2015-04-27 2015-03-31 13F/A-1 MASTEC COM 576323109 1,246,422 53,683 4.50 24,055 -10.80 0.1061
2015-04-21 2015-03-31 13F MASTEC COM 576323109 1,246,422 24,055
2015-01-23 2014-12-31 13F MASTEC COM 576323109 1,192,739 188,539 18.78 26,968 -12.30 0.1169
2014-10-29 2014-09-30 13F/A-1 MASTEC COM 576323109 1,004,200 232,400 30.11 30,749 29.27 0.1358
2014-10-20 2014-09-30 13F MASTEC COM 576323109 1,004,200 30,749
2014-07-24 2014-06-30 13F MASTEC COM 576323109 771,800 764,300 10,190.67 23,787 7,196.63 0.1060
2014-04-28 2014-03-31 13F MASTEC COM 576323109 7,500 4,900 188.46 326 283.53 0.0015
2014-01-30 2013-12-31 13F MASTEC COM 576323109 2,600 -1,600 -38.10 85 -33.07 0.0004
2013-10-24 2013-09-30 13F MASTEC COM 576323109 4,200 -2,700 -39.13 127 -44.05 0.0006
2013-08-12 2013-06-30 13F MASTEC COM 576323109 6,900 6,900 227 0.0010
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.