Comfort Systems USA, Inc.
MX ˙ BMV ˙ US1999081045
SecurityMX:FIX / Comfort Systems USA, Inc.
InstitutionMoody Aldrich Partners Llc
Latest Disclosed Ownership277 shares
Latest Disclosed Value $ 381,980
Moody Aldrich Partners Llc reports 2.46% decrease in ownership of FIX / Comfort Systems USA, Inc.

On April 20, 2026 - Moody Aldrich Partners Llc filed a 13F-HR form disclosing ownership of 277 shares of Comfort Systems USA, Inc. (MX:FIX) valued at $381,980 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 284 shares of Comfort Systems USA, Inc.. This represents a change in shares of -2.46% 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)
2026-04-20 2026-03-31 13F COMFORT SYS USA COM 199908104 277 -7 -2.46 382 43.77 0.0689
2026-01-30 2025-12-31 13F COMFORT SYS USA COM 199908104 284 0 0.00 265 13.25 0.0495
2025-10-21 2025-09-30 13F COMFORT SYS USA COM 199908104 284 284 234 0.0445
2025-04-29 2025-03-31 13F COMFORT SYS USA COM 199908104 0 -928 -100.00 0 -100.00
2025-01-23 2024-12-31 13F COMFORT SYS USA COM 199908104 928 -2 -0.22 394 8.26 0.0729
2024-10-22 2024-09-30 13F COMFORT SYS USA COM 199908104 930 -3 -0.32 363 28.27 0.0660
2024-07-24 2024-06-30 13F COMFORT SYS USA COM 199908104 933 -15,833 -94.44 284 -94.69 0.0553
2024-04-30 2024-03-31 13F COMFORT SYS USA COM 199908104 16,766 -5,463 -24.58 5,327 16.52 0.9061
2024-01-26 2023-12-31 13F COMFORT SYS USA COM 199908104 22,229 -2,349 -9.56 4,572 9.15 0.8224
2023-11-08 2023-09-30 13F COMFORT SYS USA COM 199908104 24,578 996 4.22 4,188 8.16 0.7935
2023-07-28 2023-06-30 13F COMFORT SYS USA COM 199908104 23,582 -31,123 -56.89 3,872 -51.50 0.7521
2023-04-27 2023-03-31 13F COMFORT SYS USA COM 199908104 54,705 -2,121 -3.73 7,985 22.10 1.6116
2023-01-24 2022-12-31 13F COMFORT SYS USA COM 199908104 56,826 -1,462 -2.51 6,540 15.27 1.3251
2022-10-18 2022-09-30 13F COMFORT SYS USA COM 199908104 58,288 -123 -0.21 5,673 16.80 1.1679
2022-07-18 2022-06-30 13F COMFORT SYS USA COM 199908104 58,411 -8,717 -12.99 4,857 -18.71 0.9542
2022-05-10 2022-03-31 13F COMFORT SYS USA COM 199908104 67,128 7,167 11.95 5,975 0.71 0.8404
2022-02-02 2021-12-31 13F COMFORT SYS USA COM 199908104 59,961 -10,998 -15.50 5,933 17.23 0.8269
2021-10-29 2021-09-30 13F COMFORT SYS USA COM 199908104 70,959 -27,946 -28.26 5,061 -35.06 0.6422
2021-08-04 2021-06-30 13F COMFORT SYS USA COM 199908104 98,905 -1,314 -1.31 7,793 4.00 1.0950
2021-05-10 2021-03-31 13F COMFORT SYS USA COM 199908104 100,219 46,173 85.43 7,493 163.28 1.0807
2021-02-16 2020-12-31 13F COMFORT SYS USA COM 199908104 54,046 43 0.08 2,846 2.30 0.4593
2020-11-12 2020-09-30 13F COMFORT SYS USA COM 199908104 54,003 1,312 2.49 2,782 29.58 0.5820
2020-07-30 2020-06-30 13F COMFORT SYS USA COM 199908104 52,691 7,688 17.08 2,147 30.52 0.4565
2020-05-07 2020-03-31 13F COMFORT SYS USA COM 199908104 45,003 -126 -0.28 1,645 -26.89 0.4965
2020-02-07 2019-12-31 13F COMFORT SYS USA COM 199908104 45,129 704 1.58 2,250 14.50 0.4624
2019-11-12 2019-09-30 13F COMFORT SYS USA COM 199908104 44,425 44,425 1,965 0.5226
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.