Comfort Systems USA, Inc.
MX ˙ BMV ˙ US1999081045
SecurityMX:FIX / Comfort Systems USA, Inc.
InstitutionPnc Financial Services Group, Inc.
Latest Disclosed Ownership4,072 shares
Latest Disclosed Value $ 5,615,354
Pnc Financial Services Group, Inc. reports 10.38% increase in ownership of FIX / Comfort Systems USA, Inc.

On May 8, 2026 - Pnc Financial Services Group, Inc. filed a 13F-HR form disclosing ownership of 4,072 shares of Comfort Systems USA, Inc. (MX:FIX) valued at $5,615,354 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 3,689 shares of Comfort Systems USA, Inc.. This represents a change in shares of 10.38% 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)
2026-05-08 2026-03-31 13F COMFORT SYS USA COM 199908104 4,072 383 10.38 5,615 63.13 0.0005
2026-02-06 2025-12-31 13F COMFORT SYS USA COM 199908104 3,689 -1,395 -27.44 3,443 -17.95 0.0019
2025-11-07 2025-09-30 13F COMFORT SYS USA COM 199908104 5,084 -560 -9.92 4,195 38.63 0.0025
2025-08-08 2025-06-30 13F COMFORT SYS USA COM 199908104 5,644 112 2.02 3,026 69.71 0.0020
2025-05-09 2025-03-31 13F COMFORT SYS USA COM 199908104 5,532 -919 -14.25 1,783 -34.81 0.0009
2025-02-07 2024-12-31 13F COMFORT SYS USA COM 199908104 6,451 9 0.14 2,735 8.79 0.0018
2024-11-08 2024-09-30 13F COMFORT SYS USA COM 199908104 6,442 600 10.27 2,514 41.55 0.0016
2024-08-09 2024-06-30 13F COMFORT SYS USA COM 199908104 5,842 -210 -3.47 1,777 -7.60 0.0012
2024-05-10 2024-03-31 13F COMFORT SYS USA COM 199908104 6,052 -1,384 -18.61 1,923 25.70 0.0013
2024-03-22 2023-12-31 13F/A-1 COMFORT SYS USA COM 199908104 7,436 -991 -11.76 1,529 6.48 0.0012
2024-02-09 2023-12-31 13F COMFORT SYS USA COM 199908104 7,436 -991 1,529 0.0012
2023-11-13 2023-09-30 13F COMFORT SYS USA COM 199908104 8,427 -1,593 -15.90 1,436 -12.71 0.0012
2023-08-11 2023-06-30 13F COMFORT SYS USA COM 199908104 10,020 -2,548 -20.27 1,645 -10.31 0.0014
2023-05-15 2023-03-31 13F COMFORT SYS USA COM 199908104 12,568 900 7.71 1,834 36.66 0.0016
2023-02-10 2022-12-31 13F COMFORT SYS USA COM 199908104 11,668 -1,240 -9.61 1,343 6.85 0.0013
2022-11-10 2022-09-30 13F COMFORT SYS USA COM 199908104 12,908 -1,096 -7.83 1,256 7.90 0.0013
2022-08-12 2022-06-30 13F COMFORT SYS USA COM 199908104 14,004 92 0.66 1,164 -5.98 0.0011
2022-05-12 2022-03-31 13F COMFORT SYS USA COM 199908104 13,912 -567 -3.92 1,238 -13.61 0.0011
2022-02-11 2021-12-31 13F COMFORT SY Common Stock 199908104 14,479 325 2.30 1,433 42.02 0.0012
2021-11-05 2021-09-30 13F COMFORT SY Common Stock 199908104 14,154 1,448 11.40 1,009 0.80 0.0009
2021-08-06 2021-06-30 13F COMFORT SY Common Stock 199908104 12,706 -1,995 -13.57 1,001 -8.92 0.0009
2021-05-07 2021-03-31 13F COMFORT SY Common Stock 199908104 14,701 -260 -1.74 1,099 39.82 0.0011
2021-02-12 2020-12-31 13F COMFORT SY Common Stock 199908104 14,961 -1,606 -9.69 786 -7.96 0.0008
2020-11-06 2020-09-30 13F COMFORT SY Common Stock 199908104 16,567 206 1.26 854 28.23 0.0011
2020-08-28 2020-06-30 13F/A-1 COMFORT SY Common Stock 199908104 16,361 413 2.59 666 14.43 0.0009
2020-08-07 2020-06-30 13F COMFORT SY Common Stock 199908104 16,361 413 666 138.2872
2020-05-08 2020-03-31 13F COMFORT SY Common Stock 199908104 15,948 4,850 43.70 582 5.24 0.0007
2020-02-07 2019-12-31 13F COMFORT SY Common Stock 199908104 11,098 -84,215 -88.36 553 -86.88 0.0005
2019-11-08 2019-09-30 13F COMFORT SY Common Stock 199908104 95,313 -30,592 -24.30 4,216 -34.34 0.0042
2019-08-09 2019-06-30 13F COMFORT SY Common Stock 199908104 125,905 -19,047 -13.14 6,421 -15.46 0.0063
2019-05-10 2019-03-31 13F COMFORT SY Common Stock 199908104 144,952 -5,289 -3.52 7,595 15.71 0.0076
2019-02-08 2018-12-31 13F COMFORT SY Common Stock 199908104 150,241 -12,970 -7.95 6,564 -28.70 0.0073
2018-11-09 2018-09-30 13F COMFORT SY Common Stock 199908104 163,211 -1,841 -1.12 9,206 21.79 0.0087
2018-08-10 2018-06-30 13F COMFORT SY Common Stock 199908104 165,052 -23,518 -12.47 7,559 -2.80 0.0075
2018-05-11 2018-03-31 13F COMFORT SY Common Stock 199908104 188,570 -1,785 -0.94 7,777 -6.41 0.0077
2018-02-09 2017-12-31 13F COMFORT SY Common Stock 199908104 190,355 13,726 7.77 8,310 31.78 0.0081
2017-11-13 2017-09-30 13F COMFORT SY Common Stock 199908104 176,629 9,792 5.87 6,306 1.89 0.0065
2017-08-11 2017-06-30 13F COMFORT SY 199908104 166,837 1,098 0.66 6,189 1.88 0.0067
2017-05-12 2017-03-31 13F COMFORT SY Common Stock 199908104 165,739 -35,088 -17.47 6,075 -9.18 0.0067
2017-02-10 2016-12-31 13F COMFORT SY Common Stock 199908104 200,827 5,897 3.03 6,689 17.06 0.0076
2016-11-04 2016-09-30 13F COMFORT SY Common Stock 199908104 194,930 9,480 5.11 5,714 -5.40 0.0066
2016-08-05 2016-06-30 13F COMFORT SY Common Stock 199908104 185,450 9,711 5.53 6,040 8.20 0.0071
2016-05-06 2016-03-31 13F COMFORT SY Common Stock 199908104 175,739 32,930 23.06 5,582 37.56 0.0065
2016-02-05 2015-12-31 13F COMFORT SYS USA COM 199908104 142,809 -850 -0.59 4,058 3.63 0.0048
2015-11-06 2015-09-30 13F COMFORT SYS USA COM 199908104 143,659 26,472 22.59 3,916 45.63 0.0047
2015-08-05 2015-06-30 13F COMFORT SYS USA COM 199908104 117,187 110,857 1,751.30 2,689 1,921.80 0.0030
2015-05-08 2015-03-31 13F COMFORT SYS USA COM 199908104 6,330 0 0.00 133 23.15 0.0001
2015-02-06 2014-12-31 13F/A-1 COMFORT SYS USA COM 199908104 6,330 0 0.00 108 25.58 0.0001
2015-02-06 2014-12-31 13F COMFORT SYS USA COM 199908104 6,330 108
2014-11-07 2014-09-30 13F COMFORT SYS USA COM 199908104 6,330 -400 -5.94 86 -18.87 0.0001
2014-08-08 2014-06-30 13F COMFORT SYS USA COM 199908104 6,730 800 13.49 106 17.78 0.0001
2014-05-09 2014-03-31 13F COMFORT SYS USA COM 199908104 5,930 130 2.24 90 -19.64 0.0001
2014-02-07 2013-12-31 13F COMFORT SYS USA COM 199908104 5,800 -2,214 -27.63 112 -17.04 0.0001
2013-11-01 2013-09-30 13F COMFORT SYS USA COM 199908104 8,014 1,014 14.49 135 29.81 0.0002
2013-08-02 2013-06-30 13F COMFORT SYS USA COM 199908104 7,000 7,000 104 0.0002
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.