MASTEC INC · CUSIP 576323109 · CIK 1586986
As of 2026-06-30, Electron Capital Partners, LLC reported 620.19K MTZ (shares), valued at $258.04M, or 10.30% of its reported non-derivative portfolio. Filed 2026-08-14.
Verify history & sources →Shares decreased 13.02%; reported value increased 12.48%, and weight changed -0.48 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 10.30% | 620,190 | SEC filing ↗Filed Aug 14, 2026 |
| Q1 2026 | 10.78% | 713,013 | SEC filing ↗Filed May 15, 2026 |
| Q4 2025 | 8.12% | 804,303 | SEC filing ↗Filed Feb 19, 2026Amended |
| Q3 2025 | 7.90% | 819,091 | SEC filing ↗Filed Nov 14, 2025 |
| Q2 2025 | 6.81% | 747,333 | SEC filing ↗Filed Aug 14, 2025 |
| Q1 2025 | 6.13% | 732,829 | SEC filing ↗Filed May 15, 2025 |
| Q4 2024 | 8.15% | 1,036,909 | SEC filing ↗Filed Feb 14, 2025 |
| Q3 2024 | 7.50% | 1,266,569 | SEC filing ↗Filed Nov 14, 2024 |
| Q2 2024 | 7.88% | 1,432,335 | SEC filing ↗Filed Aug 15, 2024Amended |
| Q1 2024 | 7.03% | 1,720,076 | SEC filing ↗Filed May 15, 2024 |
| Q4 2023 | 6.07% | 1,725,209 | SEC filing ↗Filed Feb 14, 2024Amended |
| Q3 2023 | 5.43% | 1,486,335 | SEC filing ↗Filed Nov 14, 2023 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | 5.43% | 1,486,335 | $106.97M | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Nov 14, 2023 |
| Q4 2023 | 6.07% | 1,725,209 | $130.63M | Shares increased 16.07%; reported value increased 22.12%, and weight changed +0.64 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 14, 2024 |
| Q1 2024 | 7.03% | 1,720,076 | $160.40M | Shares decreased 0.30%; reported value increased 22.78%, and weight changed +0.96 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2024 |
| Q2 2024 | 7.88% | 1,432,335 | $153.25M | Shares decreased 16.73%; reported value decreased 4.46%, and weight changed +0.85 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 15, 2024 |
| Q3 2024 | 7.50% | 1,266,569 | $155.91M | Shares decreased 11.57%; reported value increased 1.74%, and weight changed -0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2024 |
| Q4 2024 | 8.15% | 1,036,909 | $141.16M | Shares decreased 18.13%; reported value decreased 9.46%, and weight changed +0.65 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 14, 2025 |
| Q1 2025 | 6.13% | 732,829 | $85.53M | Shares decreased 29.33%; reported value decreased 39.41%, and weight changed -2.02 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2025 |
| Q2 2025 | 6.81% | 747,333 | $127.37M | Shares increased 1.98%; reported value increased 48.92%, and weight changed +0.68 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2025 |
| Q3 2025 | 7.90% | 819,091 | $174.31M | Shares increased 9.60%; reported value increased 36.86%, and weight changed +1.09 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2025 |
| Q4 2025 | 8.12% | 804,303 | $174.83M | Shares decreased 1.81%; reported value increased 0.30%, and weight changed +0.22 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 19, 2026 |
| Q1 2026 | 10.78% | 713,013 | $229.40M | Shares decreased 11.35%; reported value increased 31.21%, and weight changed +2.66 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2026 |
| Q2 2026 | 10.30% | 620,190 | $258.04M | Shares decreased 13.02%; reported value increased 12.48%, and weight changed -0.48 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2026 |
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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.