Quanta Services, Inc.
US ˙ NYSE ˙ US74762E1029

SecurityPWR / Quanta Services, Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership1,914 shares
Latest Disclosed Value $ 793
Shell Asset Management Co reports 54.56% decrease in ownership of PWR / Quanta Services, Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 1,914 shares of Quanta Services, Inc. (US:PWR) valued at $793,200 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 4,212 shares of Quanta Services, Inc.. This represents a change in shares of -54.56% during the quarter. The current value of the position is $1,376,491 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.

Upgrade to unlock premium data and export to Excel .

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)
2025-11-07 2025-09-30 13F QUANTA SVCS COM 74762E102 1,914 -2,298 -54.56 1 -100.00 0.0796
2025-07-23 2025-06-30 13F QUANTA SVCS COM 74762E102 4,212 1,699 67.61 2 0.0550
2025-05-14 2025-03-31 13F QUANTA SVCS COM 74762E102 2,513 -193 -7.13 1 0.0303
2025-02-14 2024-12-31 13F QUANTA SVCS COM 74762E102 2,706 -531 -16.40 1 0.0374
2024-11-07 2024-09-30 13F QUANTA SVCS COM 74762E102 3,237 -43 -1.31 1 0.0425
2024-07-25 2024-03-31 13F QUANTA SVCS COM 74762E102 3,280 -2,935 -47.22 1 -100.00 0.0379
2024-02-14 2023-12-31 13F QUANTA SVCS COM 74762E102 6,215 -1,677 -21.25 1 0.00 0.0619
2023-11-08 2023-09-30 13F QUANTA SVCS COM 74762E102 7,892 -168 -2.08 1 0.00 0.0610
2023-07-28 2023-06-30 13F QUANTA SVCS COM 74762E102 8,060 -1,669 -17.15 2 0.00 0.0624
2023-05-15 2023-03-31 13F QUANTA SVCS COM 74762E102 9,729 -54 -0.55 2 0.00 0.0673
2023-02-07 2022-12-31 13F QUANTA SVCS COM 74762E102 9,783 -1,834 -15.79 1 -99.93 0.0611
2022-11-14 2022-09-30 13F QUANTA SVCS COM 74762E102 11,617 -3,167 -21.42 1,480 -20.13 0.0577
2022-08-09 2022-06-30 13F QUANTA SVCS COM 74762E102 14,784 -3,593 -19.55 1,853 -23.40 0.0548
2022-05-04 2022-03-31 13F QUANTA SVCS COM 74762E102 18,377 -9,959 -35.15 2,419 -25.55 0.0571
2022-02-09 2021-12-31 13F QUANTA SVCS COM 74762E102 28,336 4,137 17.10 3,249 17.97 0.0667
2021-11-04 2021-09-30 13F QUANTA SVCS COM 74762E102 24,199 -1,040 -4.12 2,754 20.47 0.0618
2021-08-12 2021-06-30 13F QUANTA SVCS COM 74762E102 25,239 1,370 5.74 2,286 8.86 0.0443
2021-05-10 2021-03-31 13F QUANTA SVCS COM 74762E102 23,869 -140 -0.58 2,100 21.46 0.0420
2021-02-16 2020-12-31 13F QUANTA SVCS COM 74762E102 24,009 -2,061 -7.91 1,729 25.47 0.0357
2020-11-13 2020-09-30 13F QUANTA SVCS COM 74762E102 26,070 0 0.00 1,378 34.70 0.0320
2020-08-10 2020-06-30 13F QUANTA SVCS COM 74762E102 26,070 -298 -1.13 1,023 22.22 0.0255
2020-05-11 2020-03-31 13F QUANTA SVCS COM 74762E102 26,368 -401 -1.50 837 -23.21 0.0233
2020-02-13 2019-12-31 13F QUANTA SVCS COM 74762E102 26,769 -689 -2.51 1,090 5.01 0.0235
2019-11-12 2019-09-30 13F QUANTA SVCS COM 74762E102 27,458 -238 -0.86 1,038 -1.89 0.0237
2019-08-12 2019-06-30 13F QUANTA SVCS COM 74762E102 27,696 -631 -2.23 1,058 -1.03 0.0234
2019-05-09 2019-03-31 13F QUANTA SVCS COM 74762E102 28,327 0 0.00 1,069 25.32 0.0236
2019-02-13 2018-12-31 13F QUANTA SVCS COM 74762E102 28,327 -2,400 -7.81 853 -16.86 0.0213
2018-11-13 2018-09-30 13F QUANTA SVCS COM 74762E102 30,727 0 0.00 1,026 0.00 0.0202
2018-08-10 2018-06-30 13F QUANTA SVCS COM 74762E102 30,727 -1,639 -5.06 1,026 -7.73 0.0210
2018-05-14 2018-03-31 13F QUANTA SVCS COM 74762E102 32,366 0 0.00 1,112 -12.16 0.0221
2018-02-09 2017-12-31 13F QUANTA SVCS COM 74762E102 32,366 0 0.00 1,266 4.63 0.0251
2017-10-20 2017-09-30 13F/A-1 QUANTA SVCS COM 74762E102 32,366 32,366 1,210 0.0269
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.