Quanta Services, Inc.
MX ˙ BMV ˙ US74762E1029
SecurityMX:PWR / Quanta Services, Inc.
InstitutionCalamos Wealth Management LLC
Latest Disclosed Ownership4,362 shares
Latest Disclosed Value $ 2,394,825
Calamos Wealth Management LLC reports 7.51% decrease in ownership of PWR / Quanta Services, Inc.

On May 4, 2026 - Calamos Wealth Management LLC filed a 13F-HR form disclosing ownership of 4,362 shares of Quanta Services, Inc. (MX:PWR) valued at $2,394,825 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 4,716 shares of Quanta Services, Inc.. This represents a change in shares of -7.51% during the quarter.

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)
2026-05-04 2026-03-31 13F QUANTA SVCS COM 74762E102 4,362 -354 -7.51 2,395 20.30 0.0824
2026-01-29 2025-12-31 13F QUANTA SVCS COM 74762E102 4,716 1,183 33.48 1,990 35.93 0.0686
2025-10-20 2025-09-30 13F QUANTA SVCS COM 74762E102 3,533 18 0.51 1,464 10.24 0.0528
2025-07-29 2025-06-30 13F QUANTA SVCS COM 74762E102 3,515 97 2.84 1,329 53.00 0.0562
2025-04-29 2025-03-31 13F QUANTA SVCS COM 74762E102 3,418 -209 -5.76 869 -24.26 0.0433
2025-01-24 2024-12-31 13F QUANTA SVCS COM 74762E102 3,627 13 0.36 1,146 6.41 0.0573
2024-11-12 2024-09-30 13F QUANTA SVCS COM 74762E102 3,614 0 0.00 1,078 17.32 0.0552
2024-07-25 2024-06-30 13F QUANTA SVCS COM 74762E102 3,614 5 0.14 918 -2.03 0.0489
2024-05-08 2024-03-31 13F QUANTA SVCS COM 74762E102 3,609 -477 -11.67 938 6.36 0.0526
2024-01-31 2023-12-31 13F QUANTA SVCS COM 74762E102 4,086 -139 -3.29 882 11.52 0.0555
2023-10-26 2023-09-30 13F QUANTA SVCS COM 74762E102 4,225 -34 -0.80 790 -5.50 0.0599
2023-07-28 2023-06-30 13F QUANTA SVCS COM 74762E102 4,259 -3 -0.07 837 17.75 0.0613
2023-05-04 2023-03-31 13F QUANTA SVCS COM 74762E102 4,262 -56 -1.30 710 15.45 0.0556
2023-01-26 2022-12-31 13F QUANTA SVCS COM 74762E102 4,318 -118 -2.66 615 8.85 0.0478
2022-10-24 2022-09-30 13F QUANTA SVCS COM 74762E102 4,436 -96 -2.12 565 -0.53 0.0485
2022-08-01 2022-06-30 13F QUANTA SVCS COM 74762E102 4,532 -134 -2.87 568 -7.49 0.0504
2022-05-03 2022-03-31 13F QUANTA SVCS COM 74762E102 4,666 -760 -14.01 614 -1.29 0.0459
2022-02-01 2021-12-31 13F QUANTA SVCS COM 74762E102 5,426 48 0.89 622 1.63 0.0455
2021-10-26 2021-09-30 13F QUANTA SVCS COM 74762E102 5,378 -1,649 -23.47 612 -3.77 0.0495
2021-07-22 2021-06-30 13F QUANTA SVCS COM 74762E102 7,027 409 6.18 636 9.28 0.0495
2021-04-12 2021-03-31 13F QUANTA SVCS COM 74762E102 6,618 315 5.00 582 28.19 0.0480
2021-01-27 2020-12-31 13F QUANTA SVCS COM 74762E102 6,303 110 1.78 454 38.84 0.0414
2020-10-26 2020-09-30 13F QUANTA SVCS COM 74762E102 6,193 6,193 327 0.0374
2019-04-12 2019-03-31 13F QUANTA SERVICES COMMON STOCK 74762E102 0 -67,886 -100.00 0 -100.00
2019-01-24 2018-12-31 13F QUANTA SERVICES COMMON STOCK 74762E102 67,886 67,886 2,043 0.3076
2016-04-25 2016-03-31 13F QUANTA SERVICES COMMON STOCK 74762E102 0 -24,481 -100.00 0 -100.00
2016-02-05 2015-12-31 13F QUANTA SERVICES COMMON STOCK 74762E102 24,481 -9,840 -28.67 496 -40.31 0.0988
2015-11-10 2015-09-30 13F QUANTA SERVICES COMMON STOCK 74762E102 34,321 9,703 39.41 831 17.21 0.1995
2015-08-17 2015-06-30 13F QUANTA SERVICES COMMON STOCK 74762E106 24,618 24,618 709 0.1675
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.