Comfort Systems USA, Inc.
MX ˙ BMV ˙ US1999081045
SecurityMX:FIX / Comfort Systems USA, Inc.
InstitutionGsa Capital Partners Llp
Latest Disclosed Ownership1,343 shares
Latest Disclosed Value $ 1,852
Gsa Capital Partners Llp reports 340.33% increase in ownership of FIX / Comfort Systems USA, Inc.

On May 8, 2026 - Gsa Capital Partners Llp filed a 13F-HR form disclosing ownership of 1,343 shares of Comfort Systems USA, Inc. (MX:FIX) valued at $1,852 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 305 shares of Comfort Systems USA, Inc..

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 1,343 1,038 340.33 2 0.1152
2026-02-06 2025-12-31 13F COMFORT SYS USA COM 199908104 305 305 0 0.0246
2025-11-07 2025-09-30 13F COMFORT SYS USA COM 199908104 0 -549 -100.00 0 0.0000
2025-07-22 2025-06-30 13F COMFORT SYS USA COM 199908104 549 -4,809 -89.75 0 -100.00 0.0206
2025-05-08 2025-03-31 13F COMFORT SYS USA COM 199908104 5,358 3,890 264.99 2 0.1561
2025-02-07 2024-12-31 13F COMFORT SYS USA COM 199908104 1,468 -243 -14.20 1 0.0461
2024-11-05 2024-09-30 13F COMFORT SYS USA COM 199908104 1,711 -475 -21.73 1 0.0504
2024-08-15 2024-06-30 13F COMFORT SYS USA COM 199908104 2,186 2,186 1 0.0465
2024-02-16 2023-12-31 13F COMFORT SYS USA COM 199908104 0 -9,232 -100.00 0 -100.00
2023-11-15 2023-09-30 13F COMFORT SYS USA COM 199908104 9,232 3,876 72.37 2 0.1348
2023-08-14 2023-06-30 13F COMFORT SYS USA COM 199908104 5,356 -10,198 -65.57 1 -100.00 0.0878
2023-05-12 2023-03-31 13F COMFORT SYS USA COM 199908104 15,554 15,554 2 0.2246
2023-02-13 2022-12-31 13F COMFORT SYS USA COM 199908104 0 -10,403 -100.00 0 -100.00
2022-11-14 2022-09-30 13F COMFORT SYS USA COM 199908104 10,403 954 10.10 1,013 28.88 0.1343
2022-08-09 2022-06-30 13F COMFORT SYS USA COM 199908104 9,449 4,288 83.08 786 71.24 0.1180
2022-05-11 2022-03-31 13F COMFORT SYS USA COM 199908104 5,161 5,161 459 0.0616
2022-02-14 2021-12-31 13F COMFORT SYS USA COM 199908104 0 -2,860 -100.00 0 -100.00
2021-11-12 2021-09-30 13F COMFORT SYS USA COM 199908104 2,860 -7,295 -71.84 204 -74.50 0.0208
2021-08-05 2021-06-30 13F COMFORT SYS USA COM 199908104 10,155 3,205 46.12 800 53.85 0.0900
2021-05-10 2021-03-31 13F COMFORT SYS USA COM 199908104 6,950 6,950 520 0.0863
2021-02-03 2020-12-31 13F COMFORT SYS USA COM 199908104 0 -24,983 -100.00 0 -100.00
2020-11-06 2020-09-30 13F COMFORT SYS USA COM 199908104 24,983 24,983 1,287 0.2146
2020-05-12 2020-03-31 13F COMFORT SYS USA COM 199908104 0 -22,229 -100.00 0 -100.00
2020-02-12 2019-12-31 13F COMFORT SYS USA COM 199908104 22,229 22,229 1,108 0.1290
2019-11-12 2019-09-30 13F COMFORT SYS USA COM 199908104 0 -26,753 -100.00 0 -100.00
2019-08-06 2019-06-30 13F COMFORT SYS USA COM 199908104 26,753 -10,865 -28.88 1,364 -30.80 0.1528
2019-05-15 2019-03-31 13F COMFORT SYS USA COM 199908104 37,618 21,636 135.38 1,971 182.38 0.1997
2019-02-12 2018-12-31 13F COMFORT SYS USA COM 199908104 15,982 8,269 107.21 698 60.46 0.0805
2018-11-13 2018-09-30 13F COMFORT SYS USA COM 199908104 7,713 -26,440 -77.42 435 -72.19 0.0240
2018-08-09 2018-06-30 13F COMFORT SYS USA COM 199908104 34,153 34,153 1,564 0.0776
2018-05-11 2018-03-31 13F COMFORT SYS USA COM 199908104 0 -44,396 -100.00 0 -100.00
2018-02-14 2017-12-31 13F COMFORT SYS USA COM 199908104 44,396 -14,079 -24.08 1,938 -7.18 0.1179
2017-11-20 2017-09-30 13F COMFORT SYS USA COM 199908104 58,475 23,694 68.12 2,088 61.86 0.1423
2017-08-11 2017-06-30 13F COMFORT SYS USA COM 199908104 34,781 -47,738 -57.85 1,290 -57.34 0.0842
2017-05-15 2017-03-31 13F COMFORT SYS USA COM 199908104 82,519 -12,710 -13.35 3,024 -4.64 0.1623
2017-02-14 2016-12-31 13F COMFORT SYS USA COM 199908104 95,229 -44,705 -31.95 3,171 -22.68 0.1896
2016-11-14 2016-09-30 13F COMFORT SYS USA COM 199908104 139,934 34,578 32.82 4,101 19.53 0.2204
2016-08-04 2016-06-30 13F COMFORT SYS USA COM 199908104 105,356 28,686 37.41 3,431 40.85 0.1897
2016-05-11 2016-03-31 13F COMFORT SYS USA COM 199908104 76,670 4,277 5.91 2,436 18.42 0.1553
2016-02-09 2015-12-31 13F COMFORT SYS USA COM 199908104 72,393 29,999 70.76 2,057 77.94 0.1007
2015-11-13 2015-09-30 13F COMFORT SYS USA COM 199908104 42,394 -25,359 -37.43 1,156 -25.66 0.0568
2015-08-14 2015-06-30 13F COMFORT SYS USA COM 199908104 67,753 36,028 113.56 1,555 133.13 0.0597
2015-05-14 2015-03-31 13F COMFORT SYS USA COM 199908104 31,725 12,042 61.18 667 97.92 0.0265
2015-02-05 2014-12-31 13F COMFORT SYS USA COM 199908104 19,683 47 0.24 337 26.69 0.0235
2014-11-06 2014-09-30 13F COMFORT SYS USA COM 199908104 19,636 -25,413 -56.41 266 -69.57 0.0140
2014-02-12 2013-12-31 13F COMFORT SYS USA COM 199908104 45,049 6,597 17.16 874 35.29 0.0690
2013-11-14 2013-09-30 13F COMFORT SYS USA COM 199908104 38,452 26,800 230.00 646 271.26 0.0511
2013-08-13 2013-06-30 13F COMFORT SYS USA COM 199908104 11,652 11,652 174 0.0206
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.