Comfort Systems USA, Inc.
MX ˙ BMV ˙ US1999081045
SecurityMX:FIX / Comfort Systems USA, Inc.
InstitutionFisher Asset Management, LLC
Latest Disclosed Ownership309 shares
Latest Disclosed Value $ 426,877
Fisher Asset Management, LLC reports 16.60% increase in ownership of FIX / Comfort Systems USA, Inc.

On May 5, 2026 - Fisher Asset Management, LLC filed a 13F-HR form disclosing ownership of 309 shares of Comfort Systems USA, Inc. (MX:FIX) valued at $426,877 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 265 shares of Comfort Systems USA, Inc.. This represents a change in shares of 16.60% 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)
2026-05-05 2026-03-31 13F COMFORT SYS USA COM 199908104 309 44 16.60 427 72.47 0.0001
2026-02-09 2025-12-31 13F COMFORT SYS USA COM 199908104 265 -118 -30.81 248 -21.84 0.0001
2025-11-12 2025-09-30 13F COMFORT SYS USA COM 199908104 383 383 316 0.0001
2023-12-12 2023-06-30 13F/A-1 COMFORT SYS USA COM 199908104 0 -4,410 -100.00 0 -100.00
2023-08-08 2023-06-30 13F COMFORT SYS USA COM 199908104 0 -4,410 0
2023-12-12 2023-03-31 13F/A-1 COMFORT SYS USA COM 199908104 4,410 -4,474 -50.36 644 64,200.00 0.0004
2023-05-01 2023-03-31 13F COMFORT SYS USA COM 199908104 5,531 -3,353 1 0.0005
2023-02-03 2022-12-31 13F COMFORT SYS USA COM 199908104 8,884 -30,701 -77.56 1 -99.97 0.0007
2022-11-08 2022-09-30 13F COMFORT SYS USA COM 199908104 39,585 -11,348 -22.28 3,853 -9.02 0.0029
2022-08-09 2022-06-30 13F COMFORT SYS USA COM 199908104 50,933 -4,574 -8.24 4,235 -14.29 0.0030
2022-05-05 2022-03-31 13F COMFORT SYS USA COM 199908104 55,507 5,669 11.37 4,941 0.20 0.0029
2022-02-02 2021-12-31 13F COMFORT SYS USA COM 199908104 49,838 15,789 46.37 4,931 103.09 0.0028
2021-10-26 2021-09-30 13F COMFORT SYS USA COM 199908104 34,049 7,441 27.97 2,428 15.84 0.0015
2021-07-27 2021-06-30 13F COMFORT SYS USA COM 199908104 26,608 -145 -0.54 2,096 4.80 0.0013
2021-04-27 2021-03-31 13F COMFORT SYS USA COM 199908104 26,753 -239 -0.89 2,000 40.75 0.0014
2021-01-29 2020-12-31 13F COMFORT SYS USA COM 199908104 26,992 -8,257 -23.42 1,421 -21.75 0.0011
2020-11-12 2020-09-30 13F/A-1 COMFORT SYS USA COM 199908104 35,249 -14,299 -28.86 1,816 -10.05 0.0016
2020-11-10 2020-09-30 13F COMFORT SYS USA COM 199908104 35,249 -14,299 1,816 1,542.0972
2020-08-07 2020-06-30 13F COMFORT SYS USA COM 199908104 49,548 -8,037 -13.96 2,019 -4.09 0.0020
2020-04-28 2020-03-31 13F COMFORT SYS USA COM 199908104 57,585 -4,061 -6.59 2,105 -31.50 0.0026
2020-02-12 2019-12-31 13F COMFORT SYS USA COM 199908104 61,646 -4,110 -6.25 3,073 5.67 0.0031
2019-10-29 2019-09-30 13F COMFORT SYS USA COM 199908104 65,756 -3,834 -5.51 2,908 -18.04 0.0032
2019-07-30 2019-06-30 13F COMFORT SYS USA COM 199908104 69,590 10,725 18.22 3,548 15.05 0.0039
2019-04-22 2019-03-31 13F/A-1 COMFORT SYS USA COM 199908104 58,865 -3,624 -5.80 3,084 12.97 0.0036
2019-04-22 2019-03-31 13F COMFORT SYS USA COM 199908104 62,489 0 2,730
2019-01-25 2018-12-31 13F COMFORT SYS USA COM 199908104 62,489 3,187 5.37 2,730 -18.39 0.0037
2018-10-23 2018-09-30 13F COMFORT SYS USA COM 199908104 59,302 -18,962 -24.23 3,345 -6.67 0.0041
2018-07-09 2018-06-30 13F COMFORT SYS USA COM 199908104 78,264 -18,994 -19.53 3,584 -10.67 0.0047
2018-05-10 2018-03-31 13F/A-2 COMFORT SYS USA COM 199908104 97,258 -7,421 -7.09 4,012 -12.19 0.0053
2018-04-20 2018-03-31 13F/A-1 COMFORT SYS USA COM 199908104 141,874 44,616 5,852 0.0071
2018-04-19 2018-03-31 13F COMFORT SYS USA COM 199908104 141,874 37,195 5,852
2018-01-24 2017-12-31 13F COMFORT SYS USA COM 199908104 104,679 8,654 9.01 4,569 33.28 0.0060
2017-10-17 2017-09-30 13F COMFORT SYS USA COM 199908104 96,025 8,028 9.12 3,428 4.99 0.0048
2017-07-12 2017-06-30 13F COMFORT SYS USA COM 199908104 87,997 20,367 30.12 3,265 31.71 0.0049
2017-04-24 2017-03-31 13F COMFORT SYS USA COM 199908104 67,630 23,666 53.83 2,479 69.33 0.0040
2017-01-10 2016-12-31 13F COMFORT SYS USA COM 199908104 43,964 -46,658 -51.49 1,464 -44.88 0.0025
2016-10-11 2016-09-30 13F COMFORT SYS USA COM 199908104 90,622 -28,128 -23.69 2,656 -33.20 0.0047
2016-07-12 2016-06-30 13F COMFORT SYS USA COM 199908104 118,750 -23,215 -16.35 3,976 -14.64 0.0074
2016-04-18 2016-03-31 13F COMFORT SYS USA COM 199908104 141,965 83 0.06 4,658 15.53 0.0089
2016-01-14 2015-12-31 13F COMFORT SYS USA COM 199908104 141,882 23,673 20.03 4,032 25.14 0.0078
2015-10-20 2015-09-30 13F COMFORT SYS USA COM 199908104 118,209 118,209 3,222 0.0067
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.