Comfort Systems USA, Inc.
MX ˙ BMV ˙ US1999081045
SecurityMX:FIX / Comfort Systems USA, Inc.
InstitutionSaturna Capital CORP
Latest Disclosed Ownership1,950 shares
Latest Disclosed Value $ 2,688,341
Saturna Capital CORP reports 13.56% decrease in ownership of FIX / Comfort Systems USA, Inc.

On May 11, 2026 - Saturna Capital CORP filed a 13F-HR form disclosing ownership of 1,950 shares of Comfort Systems USA, Inc. (MX:FIX) valued at $2,688,341 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 2,256 shares of Comfort Systems USA, Inc.. This represents a change in shares of -13.56% 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)
2026-05-11 2026-03-31 13F Comfort Systems USA COM 199908104 1,950 -306 -13.56 2,688 27.70 0.0377
2026-02-11 2025-12-31 13F Comfort Systems USA Common Stock 199908104 2,256 10 0.45 2,106 13.60 0.0279
2026-02-11 2025-12-31 13F Comfort Systems USA Common Stock 199908104 2,256 2,106
2026-02-11 2025-12-31 13F Comfort Systems USA Common Stock 199908104 2,256 2,106
2026-02-11 2025-12-31 13F Comfort Systems USA Common Stock 199908104 2,256 2,106
2026-02-11 2025-12-31 13F Comfort Systems USA Common Stock 199908104 2,256 2,106
2025-11-14 2025-09-30 13F Comfort Systems USA Common Stock 199908104 2,246 -205 -8.36 1,854 41.02 0.0239
2025-08-12 2025-06-30 13F Comfort Systems USA Common Stock 199908104 2,451 0 0.00 1,315 66.33 0.0178
2025-05-02 2025-03-31 13F Comfort Systems USA Common Stock 199908104 2,451 -1,048 -29.95 790 -46.73 0.0118
2025-02-07 2024-12-31 13F Comfort Systems USA Common Stock 199908104 3,499 191 5.77 1,484 14.87 0.0201
2024-11-05 2024-09-30 13F Comfort Systems USA Common Stock 199908104 3,308 -2,568 -43.70 1,291 -27.76 0.0169
2024-07-31 2024-06-30 13F Comfort Systems USA Common Stock 199908104 5,876 -2,183 -27.09 1,787 -30.20 0.0237
2024-05-13 2024-03-31 13F Comfort Systems USA Common Stock 199908104 8,059 -1,500 -15.69 2,560 30.21 0.0353
2024-02-06 2023-12-31 13F Comfort Systems USA Common Stock 199908104 9,559 -55 -0.57 1,966 20.02 0.0306
2023-11-15 2023-09-30 13F Comfort Systems USA Common Stock 199908104 9,614 0 0.00 1,638 3.80 0.0290
2023-08-04 2023-06-30 13F Comfort Systems USA Common Stock 199908104 9,614 0 0.00 1,579 12.47 0.0273
2023-05-15 2023-03-31 13F Comfort Systems USA Common Stock 199908104 9,614 514 5.65 1,403 34.00 0.0272
2023-02-09 2022-12-31 13F Comfort Systems USA Common Stock 199908104 9,100 0 0.00 1,047 18.17 0.0225
2022-11-10 2022-09-30 13F Comfort Systems USA Common Stock 199908104 9,100 0 0.00 886 17.04 0.0216
2022-08-12 2022-06-30 13F Comfort Systems USA Common Stock 199908104 9,100 0 0.00 757 -6.54 0.0179
2022-05-10 2022-03-31 13F Comfort Systems USA Common Stock 199908104 9,100 100 1.11 810 -8.99 0.0163
2022-02-09 2021-12-31 13F Comfort Systems USA Common Stock 199908104 9,000 0 0.00 890 38.63 0.0160
2021-11-08 2021-09-30 13F Comfort Systems USA Common Stock 199908104 9,000 0 0.00 642 -9.45 0.0129
2021-08-11 2021-06-30 13F Comfort Systems USA Common Stock 199908104 9,000 0 0.00 709 5.35 0.0145
2021-05-14 2021-03-31 13F Comfort Systems USA Common Stock 199908104 9,000 0 0.00 673 41.98 0.0150
2021-02-12 2020-12-31 13F Comfort Systems USA Common Stock 199908104 9,000 9,000 474 0.0107
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.