Quanta Services, Inc.
MX ˙ BMV ˙ US74762E1029
SecurityMX:PWR / Quanta Services, Inc.
InstitutionRobeco Institutional Asset Management B.V.
Latest Disclosed Ownership53,896 shares
Latest Disclosed Value $ 29,589,982
Robeco Institutional Asset Management B.V. reports 31.30% decrease in ownership of PWR / Quanta Services, Inc.

On April 21, 2026 - Robeco Institutional Asset Management B.V. filed a 13F-HR form disclosing ownership of 53,896 shares of Quanta Services, Inc. (MX:PWR) valued at $29,589,982 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 78,455 shares of Quanta Services, Inc.. This represents a change in shares of -31.30% 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)
2026-04-21 2026-03-31 13F QUANTA SVCS COM 74762E102 53,896 -24,559 -31.30 29,590 -10.64 0.0422
2026-01-23 2025-12-31 13F QUANTA SVCS COM 74762E102 78,455 -16,234 -17.14 33,113 -15.62 0.0472
2025-10-22 2025-09-30 13F QUANTA SVCS COM 74762E102 94,689 -5,584 -5.57 39,241 3.51 0.0568
2025-07-18 2025-06-30 13F QUANTA SVCS COM 74762E102 100,273 -6,427 -6.02 37,911 39.78 0.0613
2025-04-23 2025-03-31 13F QUANTA SVCS COM 74762E102 106,700 -12,844 -10.74 27,121 -28.22 0.0527
2025-01-23 2024-12-31 13F QUANTA SVCS COM 74762E102 119,544 -22,356 -15.75 37,782 -10.70 0.0716
2024-10-29 2024-09-30 13F QUANTA SVCS COM 74762E102 141,900 -16,602 -10.47 42,307 5.05 0.0840
2024-07-23 2024-06-30 13F QUANTA SVCS COM 74762E102 158,502 3,606 2.33 40,274 0.08 0.0867
2024-04-24 2024-03-31 13F QUANTA SVCS COM 74762E102 154,896 -4,353 -2.73 40,242 17.10 0.0874
2024-02-14 2023-12-31 13F/A-1 QUANTA SVCS COM 74762E102 159,249 -77,050 -32.61 34,366 -22.26 0.0833
2024-02-08 2023-12-31 13F QUANTA SVCS COM 74762E102 149,552 -86,747 159 0.0298
2023-10-24 2023-09-30 13F QUANTA SVCS COM 74762E102 236,299 -6,115 -2.52 44,204 -7.18 0.1181
2023-07-24 2023-06-30 13F QUANTA SVCS COM 74762E102 242,414 109,239 82.03 47,622 114.59 0.1249
2023-05-04 2023-03-31 13F QUANTA SVCS COM 74762E102 133,175 4,703 3.66 22,192 21.22 0.0605
2023-02-07 2022-12-31 13F QUANTA SVCS COM 74762E102 128,472 -40,123 -23.80 18,307 -14.76 0.0528
2022-12-01 2022-09-30 13F/A-1 QUANTA SVCS COM 74762E102 168,595 168,573 766,240.91 21,477 715,800.00 0.0694
2022-10-27 2022-09-30 13F QUANTA SVCS COM 74762E102 188,595 188,573 24,025 0.0766
2022-12-01 2022-06-30 13F/A-1 QUANTA SVCS COM 74762E102 22 22 3 0.0000
2022-07-27 2022-06-30 13F QUANTA SVCS COM 74762E102 22 22 3 0.0000
2022-12-01 2022-03-31 13F/A-1 QUANTA SVCS COM 74762E102 0 -50 -100.00 0 -100.00
2022-04-25 2022-03-31 13F QUANTA SVCS COM 74762E102 0 -50 0
2022-12-01 2021-12-31 13F/A-1 QUANTA SVCS COM 74762E102 50 0 0.00 6 0.00 0.0000
2022-01-31 2021-12-31 13F QUANTA SVCS COM 74762E102 50 0 6 0.0000
2022-12-01 2021-09-30 13F/A-1 QUANTA SVCS COM 74762E102 50 0 0.00 6 20.00 0.0000
2021-10-20 2021-09-30 13F QUANTA SVCS COM 74762E102 50 0 6 0.0000
2022-12-01 2021-06-30 13F/A-1 QUANTA SVCS COM 74762E102 50 50 5 0.0000
2021-07-28 2021-06-30 13F QUANTA SVCS COM 74762E102 50 50 5 0.0000
2021-01-19 2019-12-31 13F/A-1 QUANTA SVCS COM 74762E102 0 -12,630 -100.00 0 -100.00
2021-01-19 2019-09-30 13F/A-1 QUANTA SVCS COM 74762E102 12,630 -13,984 -52.54 477 -53.05 0.0017
2019-10-17 2019-09-30 13F QUANTA SVCS COM 74762E102 12,630 -13,984 477 1,681.6212
2021-01-19 2019-06-30 13F/A-1 QUANTA SVCS COM 74762E102 26,614 26,614 110.72 1,016 113.00 0.0036
2019-07-19 2019-06-30 13F QUANTA SVCS COM 74762E102 26,614 26,614 1,016 3,582.6818
2021-01-19 2018-12-31 13F/A-1 QUANTA SVCS COM 74762E102 0 -26,193 -100.00 0 -100.00
2021-01-19 2018-09-30 13F/A-1 QUANTA SVCS COM 74762E102 26,193 0 0.00 874 -0.11 0.0035
2018-10-25 2018-09-30 13F QUANTA SVCS COM 74762E102 26,193 0 874
2021-01-19 2018-06-30 13F/A-1 QUANTA SVCS COM 74762E102 26,193 0 0.00 875 -2.78 0.0040
2018-08-03 2018-06-30 13F QUANTA SVCS COM 74762E102 26,193 0 875
2021-01-19 2018-03-31 13F/A-1 QUANTA SVCS COM 74762E102 26,193 0 0.00 900 -12.11 0.0042
2018-05-07 2018-03-31 13F QUANTA SVCS COM 74762E102 26,193 0 900 4,208.8790
2021-01-19 2017-12-31 13F/A-1 QUANTA SVCS COM 74762E102 26,193 0 0.00 1,024 4.60 0.0053
2018-01-25 2017-12-31 13F QUANTA SVCS COM 74762E102 26,193 0 1,024
2021-01-19 2017-09-30 13F/A-1 QUANTA SVCS COM 74762E102 26,193 -158,004 -85.78 979 -83.86 0.0061
2017-10-17 2017-09-30 13F QUANTA SVCS COM 74762E102 26,193 26,193 979 6,065.2484
2021-01-19 2017-06-30 13F/A-1 QUANTA SVCS COM 74762E102 184,197 -94,586 -33.93 6,064 -41.38 0.0391
2021-01-19 2017-03-31 13F/A-1 QUANTA SVCS COM 74762E102 278,783 23,719 9.30 10,345 16.39 0.0689
2017-05-15 2017-03-31 13F QUANTA SVCS COM 74762E102 278,783 23,719 10,345 68,710.8653
2017-02-09 2016-12-31 13F QUANTA SVCS COM 74762E102 255,064 -6,483 -2.48 8,888 21.42 0.0695
2016-11-07 2016-09-30 13F QUANTA SVCS COM 74762E102 261,547 0 0.00 7,320 21.05 0.0541
2016-07-22 2016-06-30 13F QUANTA SVCS COM 74762E102 261,547 -91,541 -25.93 6,047 -24.08 0.0459
2016-05-16 2016-03-31 13F QUANTA SVCS COM 74762E102 353,088 168,893 91.69 7,965 113.54 0.0639
2016-02-08 2015-12-31 13F QUANTA SVCS COM 74762E102 184,195 184,195 -47.83 3,730 -53.17 0.0319
2015-11-12 2015-09-30 13F QUANTA SVCS COM 74762E102 0 -457,600 -100.00 0 -100.00
2015-08-17 2015-06-30 13F QUANTA SVCS COM 74762E102 457,600 457,600 0.00 13,188 0.1001
2015-04-24 2015-03-31 13F QUANTA SVCS COM 74762E102 0 -544,100 -100.00 0 -100.00
2015-02-12 2014-12-31 13F QUANTA SVCS COM 74762E102 544,100 -2,619 -0.48 15,447 -22.14 0.1108
2014-11-10 2014-09-30 13F QUANTA SVCS COM 74762E102 546,719 -29,315 -5.09 19,840 -0.40 0.1417
2014-08-13 2014-06-30 13F QUANTA SVCS COM 74762E102 576,034 56,932 10.97 19,919 3.99 0.1425
2014-05-07 2014-03-31 13F QUANTA SVCS COM 74762E102 519,102 44,000 9.26 19,155 27.75 0.1469
2014-02-04 2013-12-31 13F QUANTA SVCS COM 74762E102 475,102 368,919 347.44 14,994 413.49 0.1246
2013-11-12 2013-09-30 13F QUANTA SVCS COM 74762E102 106,183 2,365 2.28 2,920 6.26 0.0284
2013-08-27 2013-06-30 13F Quanta Services COM 74762E102 103,818 103,818 2,748 0.0278
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.