Comfort Systems USA, Inc.
MX ˙ BMV ˙ US1999081045
SecurityMX:FIX / Comfort Systems USA, Inc.
InstitutionAllianz Asset Management GmbH
Latest Disclosed Ownership119,449 shares
Latest Disclosed Value $ 164,718,975
Allianz Asset Management GmbH reports 31.47% increase in ownership of FIX / Comfort Systems USA, Inc.

On May 11, 2026 - Allianz Asset Management GmbH filed a 13F-HR form disclosing ownership of 119,449 shares of Comfort Systems USA, Inc. (MX:FIX) valued at $164,718,975 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 90,856 shares of Comfort Systems USA, Inc.. This represents a change in shares of 31.47% 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.

Upgrade to unlock premium data and export to Excel .

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 SYS USA COM 199908104 119,449 28,593 31.47 164,719 94.26 0.1727
2026-02-11 2025-12-31 13F COMFORT SYS USA COM 199908104 90,856 13,183 16.97 84,795 32.30 0.0858
2025-11-04 2025-09-30 13F COMFORT SYS USA COM 199908104 77,673 -16,222 -17.28 64,094 27.30 0.0716
2025-07-28 2025-06-30 13F COMFORT SYS USA COM 199908104 93,895 2,230 2.43 50,347 70.40 0.0603
2025-05-05 2025-03-31 13F COMFORT SYS USA COM 199908104 91,665 38,940 73.85 29,546 32.15 0.0387
2025-02-03 2024-12-31 13F COMFORT SYS USA COM 199908104 52,725 -593 -1.11 22,359 7.43 0.0298
2024-11-13 2024-09-30 13F COMFORT SYS USA COM 199908104 53,318 2,195 4.29 20,813 33.87 0.0291
2024-08-13 2024-06-30 13F COMFORT SYS USA COM 199908104 51,123 18,765 57.99 15,548 51.24 0.0230
2024-05-14 2024-03-31 13F COMFORT SYS USA COM 199908104 32,358 15,805 95.48 10,280 202.00 0.0159
2024-02-12 2023-12-31 13F COMFORT SYS USA COM 199908104 16,553 -315 -1.87 3,404 18.44 0.0056
2023-11-13 2023-09-30 13F COMFORT SYS USA COM 199908104 16,868 12,865 321.38 2,874 337.44 0.0048
2023-08-14 2023-06-30 13F COMFORT SYS USA COM 199908104 4,003 -1,300 -24.51 657 -15.12 0.0012
2023-05-11 2023-03-31 13F COMFORT SYS USA COM 199908104 5,303 5,303 774 0.0014
2022-05-13 2022-03-31 13F COMFORT SYS USA COM 199908104 0 -8,356 -100.00 0 -100.00
2022-02-11 2021-12-31 13F COMFORT SYS USA COM 199908104 8,356 816 10.82 827 53.72 0.0006
2021-11-10 2021-09-30 13F COMFORT SYS USA COM 199908104 7,540 0 0.00 538 -9.43 0.0004
2021-08-16 2021-06-30 13F COMFORT SYS USA COM 199908104 7,540 0 0.00 594 5.32 0.0005
2021-05-13 2021-03-31 13F COMFORT SYS USA COM 199908104 7,540 0 0.00 564 42.07 0.0005
2021-02-16 2020-12-31 13F COMFORT SYS USA COM 199908104 7,540 -597 -7.34 397 -5.25 0.0004
2020-11-13 2020-09-30 13F COMFORT SYS USA COM 199908104 8,137 -10,472 -56.27 419 -44.72 0.0005
2020-08-14 2020-06-30 13F COMFORT SYS USA COM 199908104 18,609 -21,039 -53.06 758 -47.69 0.0009
2020-05-14 2020-03-31 13F COMFORT SYS USA COM 199908104 39,648 -31,264 -44.09 1,449 -59.01 0.0019
2020-02-13 2019-12-31 13F COMFORT SYS USA COM 199908104 70,912 -89,852 -55.89 3,535 -50.28 0.0032
2019-11-13 2019-09-30 13F COMFORT SYS USA COM 199908104 160,764 -283,904 -63.85 7,110 -68.64 0.0070
2019-08-08 2019-06-30 13F COMFORT SYS USA COM 199908104 444,668 46,836 11.77 22,673 8.78 0.0211
2019-05-13 2019-03-31 13F COMFORT SYS USA COM 199908104 397,832 371,558 1,414.17 20,843 1,717.18 0.0207
2019-04-02 2018-12-31 13F/A-1 COMFORT SYS USA COM 199908104 26,274 1,010 4.00 1,147 -19.51 0.0013
2019-02-13 2018-12-31 13F COMFORT SYS USA COM 199908104 26,274 1,010 1,147
2019-04-09 2018-09-30 13F/A-1 COMFORT SYS USA COM 199908104 25,264 -944 -3.60 1,425 18.75 0.0013
2018-11-13 2018-09-30 13F COMFORT SYS USA COM 199908104 25,264 -944 1,425
2019-04-09 2018-06-30 13F/A-1 COMFORT SYS USA COM 199908104 26,208 -590,943 -95.75 1,200 -95.29 0.0012
2018-08-13 2018-06-30 13F COMFORT SYS USA COM 199908104 26,208 -590,943 1,200
2019-04-09 2018-03-31 13F/A-2 COMFORT SYS USA COM 199908104 617,151 -202,866 -24.74 25,458 -28.88 0.0244
2018-05-23 2018-03-31 13F/A-1 COMFORT SYS USA COM 199908104 617,151 0 25,458 0.0243
2018-05-14 2018-03-31 13F COMFORT SYS USA COM 199908104 617,151 -202,866 25,458
2019-04-17 2017-12-31 13F/A-1 COMFORT SYS USA COM 199908104 820,017 -26,354 -3.11 35,794 18.46 0.0283
2018-02-13 2017-12-31 13F COMFORT SYS USA COM 199908104 820,017 -26,354 35,794
2019-04-17 2017-09-30 13F/A-1 COMFORT SYS USA COM 199908104 846,371 -305,771 -26.54 30,216 -29.30 0.0262
2017-11-13 2017-09-30 13F COMFORT SYS USA COM 199908104 846,371 -305,771 30,216
2019-04-17 2017-06-30 13F/A-1 COMFORT SYS USA COM 199908104 1,152,142 -288,006 -20.00 42,736 -19.03 0.0413
2017-08-14 2017-06-30 13F COMFORT SYS USA COM 199908104 1,152,142 -288,006 42,736
2019-04-17 2017-03-31 13F/A-1 COMFORT SYS USA COM 199908104 1,440,148 -84,667 -5.55 52,782 3.95 0.0518
2017-05-15 2017-03-31 13F COMFORT SYS USA COM 199908104 1,440,148 -84,667 52,782
2019-04-17 2016-12-31 13F/A-2 COMFORT SYS USA COM 199908104 1,524,815 218,560 16.73 50,776 32.68 0.0457
2017-03-14 2016-12-31 13F/A-1 COMFORT SYS USA COM 199908104 1,524,815 0 50,776 0.0456
2017-02-13 2016-12-31 13F COMFORT SYS USA COM 199908104 1,524,815 50,776
2019-04-17 2016-09-30 13F/A-1 COMFORT SYS USA COM 199908104 1,306,255 1,128,820 636.19 38,270 562.23 0.0374
2016-11-14 2016-09-30 13F COMFORT SYS USA COM 199908104 1,306,255 1,128,820 38,270
2017-01-24 2016-06-30 13F/A-1 COMFORT SYS USA COM 199908104 177,435 -31,931 -15.25 5,779 -13.12 0.0062
2016-08-12 2016-06-30 13F COMFORT SYS USA COM 199908104 177,435 5,779
2016-05-13 2016-03-31 13F COMFORT SYS USA COM 199908104 209,366 130,860 166.69 6,652 198.16 0.0076
2017-01-24 2015-12-31 13F/A-1 COMFORT SYS USA COM 199908104 78,506 -1,453 -1.82 2,231 2.34 0.0025
2016-02-16 2015-12-31 13F COMFORT SYS USA COM 199908104 78,506 2,231
2017-01-24 2015-09-30 13F/A-2 COMFORT SYS USA COM 199908104 79,959 79,959 2,180 0.0026
2015-11-20 2015-09-30 13F/A-1 COMFORT SYS USA COM 199908104 79,959 0 2,180 0.0023
2015-11-13 2015-09-30 13F COMFORT SYS USA COM 199908104 79,959 2,180 0.0023
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.