Comfort Systems USA, Inc.
US ˙ NYSE ˙ US1999081045

SecurityFIX / Comfort Systems USA, Inc.
InstitutionVerition Fund Management LLC
Latest Disclosed Ownership9,589 shares
Latest Disclosed Value $ 13,223,135
Verition Fund Management LLC reports 53.32% decrease in ownership of FIX / Comfort Systems USA, Inc.

On May 15, 2026 - Verition Fund Management LLC filed a 13F-HR form disclosing ownership of 9,589 shares of Comfort Systems USA, Inc. (US:FIX) valued at $13,223,135 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 20,544 shares of Comfort Systems USA, Inc.. This represents a change in shares of -53.32% during the quarter. The current value of the position is $17,740,034 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.

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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 COMFORT SYS USA COM 199908104 9,589 -10,955 -53.32 13,223 -31.03 0.0857
2026-02-13 2025-12-31 13F COMFORT SYS USA COM 199908104 20,544 8,696 73.40 19,174 96.12 0.0753
2025-11-14 2025-09-30 13F COMFORT SYS USA COM 199908104 11,848 7,163 152.89 9,777 289.17 0.0404
2025-08-14 2025-06-30 13F COMFORT SYS USA COM 199908104 4,685 -2,817 -37.55 2,512 3.89 0.0112
2025-05-15 2025-03-31 13F COMFORT SYS USA COM 199908104 7,502 3,654 94.96 2,418 48.25 0.0113
2025-02-14 2024-12-31 13F COMFORT SYS USA COM 199908104 3,848 55 1.45 1,632 10.20 0.0065
2024-11-14 2024-09-30 13F COMFORT SYS USA COM 199908104 3,793 -7,281 -65.75 1,481 -56.04 0.0075
2024-08-14 2024-06-30 13F COMFORT SYS USA COM 199908104 11,074 11,074 3,368 0.0184
2024-05-14 2024-03-31 13F COMFORT SYS USA COM 199908104 0 -1,027 -100.00 0 -100.00
2024-02-14 2023-12-31 13F COMFORT SYS USA COM 199908104 1,027 1,027 211 0.0017
2023-05-15 2023-03-31 13F COMFORT SYS USA COM 199908104 0 -1,904 -100.00 0 -100.00
2023-02-14 2022-12-31 13F COMFORT SYS USA COM 199908104 1,904 -1,007 -34.59 219 -22.61 0.0034
2023-01-18 2022-09-30 13F/A-1 COMFORT SYS USA COM 199908104 2,911 2,911 283 0.0032
2022-11-14 2022-09-30 13F COMFORT SYS USA COM 199908104 2,911 2,911 283 0.0026
2021-11-15 2021-09-30 13F COMFORT SYS USA COM 199908104 0 -3,658 -100.00 0 -100.00
2021-08-16 2021-06-30 13F COMFORT SYS USA COM 199908104 3,658 -2,126 -36.76 288 -5.57 0.0026
2021-02-16 2020-12-31 13F COMFORT SYS USA COM 199908104 5,784 5,784 305 0.0027
2020-05-15 2020-03-31 13F COMFORT SYS USA COM 199908104 0 -5,283 -100.00 0 -100.00
2020-02-14 2019-12-31 13F COMFORT SYS USA COM 199908104 5,283 5,283 263 0.0048
2019-08-14 2019-06-30 13F COMFORT SYS USA COM 199908104 0 -8,204 -100.00 0 -100.00
2019-05-15 2019-03-31 13F COMFORT SYS USA COM 199908104 8,204 8,204 430 0.0168
2019-02-14 2018-12-31 13F COMFORT SYS USA COM 199908104 0 -15,132 -100.00 0 -100.00
2018-11-14 2018-09-30 13F COMFORT SYS USA COM 199908104 15,132 3,357 28.51 853 58.26 0.0305
2018-08-15 2018-06-30 13F COMFORT SYS USA COM 199908104 11,775 11,775 539 0.0329
2017-05-12 2017-03-31 13F COMFORT SYS USA COM 199908104 0 -10,030 -100.00 0 -100.00
2017-02-14 2016-12-31 13F COMFORT SYS USA COM 199908104 10,030 -7,011 -41.14 334 -33.07 0.0288
2016-11-15 2016-09-30 13F COMFORT SYS USA COM 199908104 17,041 927 5.75 499 59.94 0.0536
2014-02-14 2013-12-31 13F COMFORT SYS USA COM 199908104 16,114 16,114 312 0.0555
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.