Quanta Services, Inc.
MX ˙ BMV ˙ US74762E1029
SecurityMX:PWR / Quanta Services, Inc.
InstitutionMAI Capital Management
Latest Disclosed Ownership14,712 shares
Latest Disclosed Value $ 8,077,386
MAI Capital Management reports 7.05% decrease in ownership of PWR / Quanta Services, Inc.

On May 15, 2026 - MAI Capital Management filed a 13F-HR form disclosing ownership of 14,712 shares of Quanta Services, Inc. (MX:PWR) valued at $8,077,386 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,828 shares of Quanta Services, Inc.. This represents a change in shares of -7.05% 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)
2026-05-15 2026-03-31 13F QUANTA SVCS COM 74762E102 14,712 -1,116 -7.05 8,077 20.91 0.0456
2026-02-13 2025-12-31 13F QUANTA SVCS COM 74762E102 15,828 -1,227 -7.19 6,680 -5.48 0.0384
2025-11-10 2025-09-30 13F QUANTA SVCS COM 74762E102 17,055 -539 -3.06 7,068 6.25 0.0440
2025-08-12 2025-06-30 13F QUANTA SVCS COM 74762E102 17,594 657 3.88 6,652 54.53 0.0460
2025-05-15 2025-03-31 13F QUANTA SVCS COM 74762E102 16,937 1,238 7.89 4,305 -13.24 0.0324
2025-02-14 2024-12-31 13F QUANTA SVCS COM 74762E102 15,699 8,539 119.26 4,962 132.47 0.0368
2024-11-07 2024-09-30 13F Quanta Services CS 74762E102 7,160 1,816 33.98 2,135 57.26 0.0203
2024-08-12 2024-06-30 13F Quanta Services CS 74762E102 5,344 -49 -0.91 1,358 -3.07 0.0133
2024-05-08 2024-03-31 13F Quanta Services CS 74762E102 5,393 -255 -4.51 1,401 14.94 0.0145
2024-02-09 2023-12-31 13F Quanta Services CS 74762E102 5,648 1,501 36.19 1,219 57.16 0.0160
2023-11-14 2023-09-30 13F Quanta Services CS 74762E102 4,147 -37 -0.88 776 -5.60 0.0115
2023-08-02 2023-06-30 13F Quanta Services CS 74762E102 4,184 -27 -0.64 822 17.12 0.0121
2023-05-10 2023-03-31 13F Quanta Services CS 74762E102 4,211 42 1.01 702 18.01 0.0111
2023-02-09 2022-12-31 13F Quanta Services CS 74762E102 4,169 -450 -9.74 594 1.02 0.0100
2022-11-15 2022-09-30 13F Quanta Services CS 74762E102 4,619 4,619 588 0.0110
2016-04-08 2016-03-31 13F Quanta Services CS 74762E102 0 0 0 0.0000
2016-01-27 2015-12-31 13F Quanta Services CS 74762E102 0 -10,801 -100.00 0 -100.00
2015-10-28 2015-09-30 13F Quanta Services CS 74762E102 10,801 -7,566 -41.19 261 -50.66 0.0197
2015-07-09 2015-06-30 13F Quanta Services CS 74762E102 18,367 -98,376 -84.27 529 -84.12 0.0349
2015-04-30 2015-03-31 13F Quanta Services CS 74762E102 116,743 32,736 38.97 3,331 39.66 0.2232
2015-01-20 2014-12-31 13F Quanta Services CS 74762E102 84,007 -13,144 -13.53 2,385 -32.36 0.1672
2014-10-16 2014-09-30 13F/A-1 Quanta Services CS 74762E102 97,151 -194 -0.20 3,526 4.75 0.3397
2014-10-16 2014-09-30 13F Quanta Services COM 74762E102 97,345 3,366
2014-07-28 2014-06-30 13F Quanta Services COM 74762E102 97,345 -1,397 -1.41 3,366 -7.63 0.3234
2014-04-28 2014-03-31 13F Quanta Services COM 74762E102 98,742 22,403 29.35 3,644 51.27 0.3668
2014-02-06 2013-12-31 13F Quanta Services COM 74762E102 76,339 9,296 13.87 2,409 30.64 0.2554
2013-10-28 2013-09-30 13F Quanta Services COM 74762E102 67,043 67,043 1,844 0.2396
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.