Comfort Systems USA (FIX)
Comfort Systems USA on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on NYSE, classified by the SEC as electrical work.
758K
Short interest
settlement 2026-10-15
2.0
Days to cover
-0.6 days vs prior
46.9%
Short share of volume
2026-11-02
894
Fails to deliver
settlement 2026-09-24
Thu 18 Feb
Next earnings
estimated date
-$43.2M
Insider flow, 90 days
0 buys, 4 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in FIX is 757,613 shares, down 100,199 shares over the last month. Over the last 48 readings it ranged from 536,221 shares (31 October 2024) to 1,109,009 shares (15 May 2025). At the reported average volume of 386K shares a day that is 2.0 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/fix" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 757,613 | -10.9% | 385,889 | 1.96 |
| 2026-09-30 | 849,979 | -0.9% | 325,655 | 2.61 |
| 2026-09-15 | 857,812 | -5.8% | 304,182 | 2.82 |
| 2026-08-31 | 910,248 | -0.5% | 412,116 | 2.21 |
| 2026-08-14 | 915,049 | +31.5% | 378,680 | 2.42 |
| 2026-07-31 | 695,921 | -17.1% | 621,477 | 1.12 |
| 2026-07-15 | 839,258 | +12.4% | 434,788 | 1.93 |
| 2026-06-30 | 746,501 | -5.1% | 617,687 | 1.21 |
| 2026-06-15 | 786,903 | -4.7% | 462,637 | 1.70 |
| 2026-05-29 | 825,373 | -8.2% | 433,080 | 1.91 |
| 2026-05-15 | 898,803 | +18.1% | 383,894 | 2.34 |
| 2026-04-30 | 760,735 | +0.0% | 450,774 | 1.69 |
| 2026-04-15 | 760,531 | +22.4% | 335,079 | 2.27 |
| 2026-03-31 | 621,334 | -7.1% | 454,739 | 1.37 |
| 2026-03-13 | 669,099 | +2.5% | 439,698 | 1.52 |
| 2026-02-27 | 652,846 | +1.0% | 566,488 | 1.15 |
| 2026-02-13 | 646,648 | -11.8% | 398,528 | 1.62 |
| 2026-01-30 | 732,808 | -8.6% | 356,546 | 2.06 |
| 2026-01-15 | 801,544 | +3.4% | 451,648 | 1.77 |
| 2025-12-31 | 775,068 | -2.7% | 1,047,727 | 1.00 |
| 2025-12-15 | 796,621 | +8.4% | 470,195 | 1.69 |
| 2025-11-28 | 734,974 | +12.1% | 709,866 | 1.04 |
| 2025-11-14 | 655,811 | +17.4% | 380,467 | 1.72 |
| 2025-10-31 | 558,433 | -9.8% | 477,913 | 1.17 |
| 2025-10-15 | 619,281 | -6.9% | 303,578 | 2.04 |
| 2025-09-30 | 665,142 | -9.1% | 400,087 | 1.66 |
| 2025-09-15 | 732,031 | +6.0% | 407,683 | 1.80 |
| 2025-08-29 | 690,937 | -10.9% | 367,531 | 1.88 |
| 2025-08-15 | 775,816 | +12.4% | 399,064 | 1.94 |
| 2025-07-31 | 690,283 | -11.3% | 490,023 | 1.41 |
| 2025-07-15 | 778,081 | +2.4% | 306,454 | 2.54 |
| 2025-06-30 | 759,630 | +13.2% | 385,786 | 1.97 |
| 2025-06-13 | 671,090 | +13.2% | 339,045 | 1.98 |
| 2025-05-30 | 592,614 | -46.6% | 312,929 | 1.89 |
| 2025-05-15 | 1,109,009 | +43.0% | 398,675 | 2.78 |
| 2025-04-30 | 775,494 | -6.6% | 494,096 | 1.57 |
| 2025-04-15 | 830,338 | -3.7% | 558,243 | 1.49 |
| 2025-03-31 | 862,079 | +18.6% | 556,516 | 1.55 |
| 2025-03-14 | 726,707 | -29.2% | 618,991 | 1.17 |
| 2025-02-28 | 1,027,070 | +38.5% | 776,581 | 1.32 |
| 2025-02-14 | 741,352 | +2.5% | 494,957 | 1.50 |
| 2025-01-31 | 723,039 | +8.8% | 590,689 | 1.22 |
| 2025-01-15 | 664,762 | -10.7% | 383,611 | 1.73 |
| 2024-12-31 | 744,739 | +17.4% | 301,974 | 2.47 |
| 2024-12-13 | 634,341 | -2.8% | 270,442 | 2.35 |
| 2024-11-29 | 652,618 | -3.9% | 351,558 | 1.86 |
| 2024-11-15 | 679,062 | +26.6% | 350,054 | 1.94 |
| 2024-10-31 | 536,221 | +40.3% | 398,358 | 1.35 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of FIX volume is 46.9%, down 4.1 points over the last five sessions. Over the last 30 readings it ranged from 25.5% (20 October 2026) to 64.9% (14 October 2026). The latest reading is 4.4 points below the 30-session average of 51.3%, on 203K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 95K | 203K | 46.9% | 189 |
| 2026-10-30 | 145K | 272K | 53.1% | 424 |
| 2026-10-29 | 114K | 229K | 49.7% | 57 |
| 2026-10-28 | 175K | 318K | 54.8% | 0 |
| 2026-10-27 | 116K | 217K | 53.5% | 62 |
| 2026-10-26 | 167K | 327K | 51.0% | 8,589 |
| 2026-10-23 | 273K | 628K | 43.6% | 18,574 |
| 2026-10-22 | 111K | 333K | 33.3% | 1,961 |
| 2026-10-21 | 66K | 209K | 31.4% | 552 |
| 2026-10-20 | 61K | 241K | 25.5% | 34 |
| 2026-10-19 | 76K | 153K | 49.9% | 84 |
| 2026-10-16 | 61K | 144K | 42.5% | 48 |
| 2026-10-15 | 116K | 350K | 33.2% | 52 |
| 2026-10-14 | 120K | 185K | 64.9% | 105 |
| 2026-10-13 | 99K | 187K | 52.9% | 134 |
| 2026-10-12 | 68K | 110K | 61.5% | 9 |
| 2026-10-09 | 59K | 98K | 59.8% | 902 |
| 2026-10-08 | 82K | 142K | 57.9% | 2 |
| 2026-10-07 | 110K | 185K | 59.4% | 2 |
| 2026-10-06 | 90K | 212K | 42.3% | 0 |
| 2026-10-05 | 49K | 103K | 48.3% | 396 |
| 2026-10-02 | 58K | 112K | 52.2% | 26 |
| 2026-10-01 | 73K | 126K | 58.0% | 21 |
| 2026-09-30 | 65K | 101K | 64.9% | 69 |
| 2026-09-29 | 74K | 127K | 58.5% | 506 |
| 2026-09-28 | 91K | 152K | 59.9% | 397 |
| 2026-09-25 | 60K | 105K | 57.2% | 129 |
| 2026-09-24 | 58K | 91K | 63.8% | 69 |
| 2026-09-23 | 58K | 114K | 50.9% | 59 |
| 2026-09-22 | 77K | 132K | 58.1% | 16 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 24 September 2026, the fails-to-deliver balance in FIX is 894 shares, up 893 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (23 September 2026) to 16,637 shares (15 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-24 | 894 | $1625.90 | $1.5M |
| 2026-09-23 | 1 | $1625.13 | $2K |
| 2026-09-21 | 60 | $1651.37 | $99K |
| 2026-08-17 | 7 | $1774.06 | $12K |
| 2026-08-13 | 121 | $1738.82 | $210K |
| 2026-07-10 | 8 | $1781.42 | $14K |
| 2026-07-09 | 5 | $1684.94 | $8K |
| 2026-07-06 | 15,510 | $1741.30 | $27.0M |
| 2026-07-02 | 44 | $1865.15 | $82K |
| 2026-07-01 | 5 | $1981.95 | $10K |
| 2026-06-29 | 6 | $1854.23 | $11K |
| 2026-06-25 | 615 | $1954.47 | $1.2M |
| 2026-06-24 | 102 | $1908.07 | $195K |
| 2026-06-22 | 21 | $1967.41 | $41K |
| 2026-06-16 | 2 | $1952.02 | $4K |
| 2026-06-15 | 16,637 | $1877.61 | $31.2M |
| 2026-06-12 | 469 | $1843.42 | $865K |
| 2026-06-09 | 61 | $1852.03 | $113K |
| 2026-05-29 | 53 | $1855.15 | $98K |
| 2026-05-15 | 241 | $2042.36 | $492K |
| 2026-05-14 | 649 | $2034.63 | $1.3M |
| 2026-04-27 | 2 | $1726.12 | $3K |
| 2026-04-20 | 55 | $1650.47 | $91K |
| 2026-04-17 | 19 | $1605.97 | $31K |
| 2026-04-06 | 4 | $1417.19 | $6K |
| 2026-03-25 | 448 | $1461.52 | $655K |
| 2026-03-24 | 9 | $1408.25 | $13K |
| 2026-03-23 | 2 | $1356.75 | $3K |
| 2026-03-19 | 57 | $1423.00 | $81K |
| 2026-02-23 | 1,047 | $1462.23 | $1.5M |
Insider trades
SEC Form 4, newest first. JSONInsiders at FIX reported 4 open-market sells worth $43.2M in the last 90 days and no open-market buys. Latest filing: Lane Brian E. (CHIEF EXECUTIVE OFF.) on 2026-08-26.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Sell | 16K | $1608.21 | $25.8M | 145K |
| 2026-08-17 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sell | 3K | $1859.65 | $4.7M | 30K |
| 2026-08-11 | MYERS FRANKLIN | Director | Sell | 4K | $1693.92 | $6.8M | 8K |
| 2026-08-10 | MYERS FRANKLIN | Director | Sell | 4K | $1690.47 | $5.9M | 59K |
| 2026-06-24 | MYERS FRANKLIN | Director | Sell | 7K | $1954.47 | $13.1M | 62K |
| 2026-05-27 | Hardy Rhoman J | Director | Sell | 342 | $1900.08 | $650K | 2K |
| 2026-05-21 | MYERS FRANKLIN | Director | Gift | 273 | $0.00 | $0 | 69K |
| 2026-05-18 | Hardy Rhoman J | Director | Grant | 105 | $0.00 | $0 | 2K |
| 2026-05-18 | Wallis-Lage Cindy L. | Director | Grant | 105 | $0.00 | $0 | 6K |
| 2026-05-18 | Kapoor Gaurav | Director | Grant | 105 | $0.00 | $0 | 832 |
| 2026-05-18 | Skidmore Constance Ellen | Director | Grant | 105 | $0.00 | $0 | 13K |
| 2026-05-18 | Mercado, Pablo G. | Director | Grant | 105 | $0.00 | $0 | 3K |
| 2026-05-18 | SANDBROOK WILLIAM J | Director | Grant | 105 | $0.00 | $0 | 8K |
| 2026-05-18 | MYERS FRANKLIN | Director | Grant | 105 | $0.00 | $0 | 69K |
| 2026-05-18 | BULLS HERMAN E | Director | Grant | 105 | $0.00 | $0 | 30K |
| 2026-05-18 | ANDERSON DARCY | Director | Grant | 105 | $0.00 | $0 | 18K |
| 2026-05-11 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Sell | 1K | $2000.37 | $2.2M | 13K |
| 2026-05-11 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sell | 1K | $2020.96 | $2.0M | 33K |
| 2026-05-08 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sell | 4K | $1948.17 | $7.8M | 34K |
| 2026-05-07 | MYERS FRANKLIN | Director | Sell | 5K | $1902.57 | $8.6M | 69K |
| 2026-05-07 | MYERS FRANKLIN | Director | Gift | 256 | $0.00 | $0 | 73K |
| 2026-05-07 | MYERS FRANKLIN | Director | Gift | 205 | $0.00 | $0 | 74K |
| 2026-05-07 | MYERS FRANKLIN | Director | Gift | 51 | $0.00 | $0 | 74K |
| 2026-05-05 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Sell | 11K | $1969.84 | $21.9M | 161K |
| 2026-04-30 | Mercado, Pablo G. | Director | Sell | 500 | $1779.78 | $890K | 3K |
| 2026-04-29 | SANDBROOK WILLIAM J | Director | Sell | 2K | $1732.67 | $2.6M | 8K |
| 2026-04-01 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Tax withholding | 87 | $1429.60 | $124K | 14K |
| 2026-04-01 | Eslicker Rachel R. | SVP & GENERAL COUNSEL | Tax withholding | 43 | $1429.60 | $61K | 608 |
| 2026-04-01 | Eslicker Rachel R. | SVP & GENERAL COUNSEL | Tax withholding | 25 | $1429.60 | $36K | 651 |
| 2026-04-01 | Eslicker Rachel R. | SVP & GENERAL COUNSEL | Tax withholding | 31 | $1429.60 | $44K | 676 |
| 2026-04-01 | Reed Terrence | SVP & CHRO | Tax withholding | 93 | $1429.60 | $133K | 3K |
| 2026-04-01 | Reed Terrence | SVP & CHRO | Tax withholding | 82 | $1429.60 | $117K | 3K |
| 2026-04-01 | Reed Terrence | SVP & CHRO | Tax withholding | 98 | $1429.60 | $140K | 3K |
| 2026-04-01 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Tax withholding | 2K | $1429.60 | $2.2M | 172K |
| 2026-04-01 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Tax withholding | 941 | $1429.60 | $1.3M | 174K |
| 2026-04-01 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Tax withholding | 1K | $1429.60 | $1.6M | 175K |
| 2026-04-01 | Trent T McKenna | PRESIDENT/CHIEF OPERATING OFF. | Tax withholding | 341 | $1429.60 | $487K | 22K |
| 2026-04-01 | Trent T McKenna | PRESIDENT/CHIEF OPERATING OFF. | Tax withholding | 210 | $1429.60 | $300K | 23K |
| 2026-04-01 | Trent T McKenna | PRESIDENT/CHIEF OPERATING OFF. | Tax withholding | 266 | $1429.60 | $380K | 23K |
| 2026-04-01 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Tax withholding | 145 | $1429.60 | $207K | 14K |
| 2026-04-01 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Tax withholding | 87 | $1429.60 | $124K | 14K |
| 2026-04-01 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Tax withholding | 500 | $1429.60 | $715K | 38K |
| 2026-04-01 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Tax withholding | 297 | $1429.60 | $425K | 38K |
| 2026-04-01 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Tax withholding | 284 | $1429.60 | $406K | 39K |
| 2026-03-23 | Eslicker Rachel R. | SVP & GENERAL COUNSEL | Grant | 217 | $0.00 | $0 | 707 |
| 2026-03-23 | Reed Terrence | SVP & CHRO | Tax withholding | 56 | $1408.25 | $79K | 3K |
| 2026-03-23 | Reed Terrence | SVP & CHRO | Grant | 188 | $0.00 | $0 | 3K |
| 2026-03-23 | Reed Terrence | SVP & CHRO | Grant | 275 | $0.00 | $0 | 3K |
| 2026-03-23 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Tax withholding | 910 | $1408.25 | $1.3M | 176K |
| 2026-03-23 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Grant | 2K | $0.00 | $0 | 177K |
| 2026-03-23 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Grant | 3K | $0.00 | $0 | 174K |
| 2026-03-23 | Trent T McKenna | PRESIDENT/CHIEF OPERATING OFF. | Tax withholding | 204 | $1408.25 | $287K | 23K |
| 2026-03-23 | Trent T McKenna | PRESIDENT/CHIEF OPERATING OFF. | Grant | 520 | $0.00 | $0 | 23K |
| 2026-03-23 | Trent T McKenna | PRESIDENT/CHIEF OPERATING OFF. | Grant | 1K | $0.00 | $0 | 23K |
| 2026-03-23 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Tax withholding | 84 | $1408.25 | $118K | 14K |
| 2026-03-23 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Grant | 220 | $0.00 | $0 | 14K |
| 2026-03-23 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Grant | 194 | $0.00 | $0 | 14K |
| 2026-03-23 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Tax withholding | 300 | $1408.25 | $422K | 39K |
| 2026-03-23 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Grant | 764 | $0.00 | $0 | 39K |
| 2026-03-23 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Grant | 597 | $0.00 | $0 | 38K |
| 2026-03-03 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Sell | 2K | $1382.15 | $3.2M | 14K |
| 2026-03-03 | Reed Terrence | SVP & CHRO | Sell | 1K | $1397.33 | $1.6M | 3K |
| 2026-03-03 | ANDERSON DARCY | Director | Sell | 5K | $1369.74 | $6.2M | 18K |
| 2026-02-25 | Lane Brian E. | PRESIDENT/CHIEF EXECUTIVE OFF. | Sell | 9K | $1453.12 | $13.6M | 172K |
| 2026-02-25 | MYERS FRANKLIN | Director | Sell | 9K | $1472.56 | $12.7M | 74K |
| 2026-02-24 | Skidmore Constance Ellen | Director | Sell | 1K | $1425.00 | $1.4M | 13K |
| 2026-02-24 | SANDBROOK WILLIAM J | Director | Sell | 3K | $1443.32 | $3.6M | 9K |
| 2026-02-24 | Reed Terrence | SVP & CHRO | Sell | 671 | $1457.17 | $978K | 4K |
| 2026-02-23 | Mercado, Pablo G. | Director | Sell | 500 | $1405.00 | $703K | 4K |
| 2026-02-23 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sell | 9K | $1434.97 | $12.9M | 38K |
| 2026-02-23 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Exercise or conversion | 9K | $42.50 | $383K | 47K |
| 2025-12-04 | Howell Laura Finley | SVP & GENERAL COUNSEL | Sell | 1K | $996.16 | $996K | 8K |
| 2025-12-03 | MYERS FRANKLIN | Director | Gift | 270 | $0.00 | $0 | 83K |
| 2025-12-01 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Gift | 2K | $0.00 | $0 | 38K |
| 2025-12-01 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sell | 4K | $958.88 | $4.2M | 40K |
| 2025-12-01 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Tax withholding | 3K | $955.73 | $3.1M | 44K |
| 2025-11-24 | Lane Brian E. | PRESIDENT/CHIEF EXECUTIVE OFF. | Sell | 7K | $947.98 | $6.8M | 181K |
| 2025-11-14 | BULLS HERMAN E | Director | Gift | 800 | $0.00 | $0 | 30K |
| 2025-10-31 | ANDERSON DARCY | Director | Sell | 4K | $958.72 | $3.8M | 23K |
| 2025-10-29 | Mercado, Pablo G. | Director | Sell | 3K | $1005.41 | $2.5M | 4K |
| 2025-10-29 | MYERS FRANKLIN | Director | Sell | 5K | $1006.68 | $5.0M | 83K |
| 2025-10-29 | BULLS HERMAN E | Director | Sell | 2K | $1013.62 | $2.0M | 31K |
| 2025-09-10 | SANDBROOK WILLIAM J | Director | Sell | 800 | $733.56 | $587K | 12K |
| 2025-09-09 | SANDBROOK WILLIAM J | Director | Sell | 100 | $706.00 | $71K | 12K |
| 2025-09-09 | SANDBROOK WILLIAM J | Director | Sell | 600 | $708.97 | $425K | 13K |
| 2025-08-27 | BULLS HERMAN E | Director | Sell | 3K | $710.00 | $2.1M | 33K |
| 2025-08-25 | SANDBROOK WILLIAM J | Director | Sell | 700 | $689.58 | $483K | 13K |
| 2025-08-22 | Mercado, Pablo G. | Director | Sell | 1K | $695.88 | $750K | 7K |
| 2025-08-12 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Sell | 1K | $704.50 | $964K | 16K |
| 2025-08-08 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sell | 8K | $692.60 | $5.8M | 47K |
| 2025-08-08 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Exercise or conversion | 6K | $42.50 | $234K | 56K |
| 2025-08-08 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Exercise or conversion | 3K | $36.25 | $106K | 50K |
| 2025-08-07 | Lane Brian E. | PRESIDENT/CHIEF EXECUTIVE OFF. | Sell | 10K | $691.74 | $6.9M | 188K |
| 2025-08-06 | MYERS FRANKLIN | Director, CHAIRMAN OF THE BOARD | Sell | 5K | $683.57 | $3.1M | 100K |
| 2025-08-05 | MYERS FRANKLIN | Director, CHAIRMAN OF THE BOARD | Gift | 25 | $0.00 | $0 | 105K |
| 2025-08-05 | MYERS FRANKLIN | Director, CHAIRMAN OF THE BOARD | Gift | 72 | $0.00 | $0 | 105K |
| 2025-07-31 | Trent T McKenna | EVP & CHIEF OPERATING OFFICER | Sell | 4K | $716.63 | $3.2M | 22K |
| 2025-06-09 | BULLS HERMAN E | Director | Sell | 3K | $500.01 | $1.3M | 36K |
| 2025-06-06 | ANDERSON DARCY | Director | Sell | 8K | $506.82 | $4.1M | 27K |
| 2025-06-02 | MYERS FRANKLIN | Director,Other | Gift | 500 | $0.00 | $0 | 105K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON31 Form 144 notices on file for FIX worth $173.7M at the prices reported; 4 in the last 90 days worth $43.2M. Latest: BRIAN E LANE filed on 2026-08-26 to sell 16,024 shares ($25.8M) from 2026-08-26.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-26 | BRIAN E LANEOfficer, Director | 16K | $25.8M | 0.046% | 2026-08-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | GEORGE WILLIAM IIIOfficer | 3K | $4.7M | 0.007% | 2026-08-17 | Raymond James & Associates, Inc. |
| 2026-08-11 | Franklin MyersDirector | 4K | $6.7M | 0.011% | 2026-08-11 | BNY Pershing |
| 2026-08-10 | MYERS FRANKLINDirector | 4K | $5.9M | 0.010% | 2026-08-10 | FIDELITY BROKERAGE SERVICES LLC |
| 2026-05-22 | Hardy Rhoman JDirector | 342 | $628K | 0.001% | 2026-05-22 | Fidelity Brokerage Services LLC |
| 2026-05-11 | GEORGE WILLIAM IIIOfficer | 1K | $2.0M | 0.003% | 2026-05-11 | Raymond James & Associates |
| 2026-05-11 | Shaeff JulieOfficer | 1K | $2.2M | 0.003% | 2026-05-11 | Raymond James & Associates |
| 2026-05-08 | GEORGE WILLIAM IIIOfficer | 4K | $7.8M | 0.011% | 2026-05-08 | Raymond James & Associates |
| 2026-05-07 | MYERS FRANKLINDirector | 5K | $8.7M | 0.013% | 2026-05-07 | Fidelity Brokerage Services LLC |
| 2026-05-05 | BRIAN E LANEOfficer, Director | 11K | $21.9M | 0.032% | 2026-05-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-30 | Mercado, Pablo G.Director | 500 | $863K | 0.001% | 2026-04-28 | Fidelity Brokerage Services LLC |
| 2026-04-29 | SANDBROOK WILLIAM JDirector | 2K | $2.6M | 0.004% | 2026-04-29 | RBC CAPITAL MARKETS LLC |
| 2026-03-10 | Howell Laura FinleyOfficer | 723 | $1000K | 0.002% | 2026-03-10 | Rockefeller Capital Management |
| 2026-03-03 | Shaeff JulieOfficer | 2K | $3.2M | 0.007% | 2026-03-03 | Raymond James & Associates |
| 2026-03-03 | Reed TerrenceOfficer | 1K | $1.6M | 0.003% | 2026-03-03 | Fidelity Brokerage Services LLC |
| 2026-03-03 | ANDERSON DARCYDirector | 5K | $6.2M | 0.013% | 2026-03-03 | BofA Securities, Inc. |
| 2026-02-25 | Howell Laura FinleyOfficer | 690 | $1.0M | 0.002% | 2026-02-25 | Rockefeller Capital Management |
| 2026-02-25 | BRIAN E LANEOfficer, Director | 9K | $13.6M | 0.027% | 2026-02-25 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-24 | Reed TerrenceOfficer | 671 | $949K | 0.002% | 2026-02-27 | Raymond James & Associates |
| 2026-02-24 | MYERS FRANKLINDirector | 9K | $12.2M | 0.024% | 2026-02-24 | Fidelity Brokerage Services LLC |
| 2026-02-24 | SANDBROOK WILLIAM JDirector | 3K | $3.6M | 0.007% | 2026-02-24 | RBC CAPITAL MARKETS LLC |
| 2026-02-23 | GEORGE WILLIAM IIIOfficer | 9K | $12.9M | 0.026% | 2026-02-23 | Raymond James & Associates |
| 2026-02-23 | Mercado, Pablo G.Director | 500 | $709K | 0.001% | 2026-02-23 | Fidelity Brokerage Services LLC |
| 2026-02-23 | Constance E. SkidmoreDirector | 1K | $1.4M | 0.003% | 2026-02-24 | Merrill Lynch Wealth Management |
| 2025-12-04 | Howell Laura FinleyOfficer | 1K | $996K | 0.003% | 2025-12-04 | Stifel Nicolaus & Company Inc |
| 2025-12-01 | GEORGE WILLIAM IIIOfficer | 4K | $4.2M | 0.012% | 2025-12-01 | Raymond James & Associates |
| 2025-11-24 | BRIAN E LANEOfficer, Director | 7K | $6.8M | 0.020% | 2025-11-24 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-31 | ANDERSON DARCYDirector | 4K | $3.8M | 0.011% | 2025-10-31 | BofA Securities, Inc. |
| 2025-10-29 | Mercado, Pablo G.Director | 3K | $2.5M | 0.007% | 2025-10-29 | Fidelity Brokerage Services LLC |
| 2025-10-29 | MYERS FRANKLINDirector | 5K | $5.1M | 0.014% | 2025-10-29 | FIDELITY BROKERAGE SERVICES LLC |
| 2025-10-29 | BULLS HERMAN EDirector | 2K | $2.0M | 0.034% | 2025-10-29 | Charles Schwab & Co |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON3 holders report 5% or more of FIX in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 8.3% of the class (2,917,000 shares), filed 2026-01-21 for an event on 2025-12-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-05-06 | 13G/Ano. 1 | Abigail P. Johnsonindividual | 1.4M | 4.1% | 2026-03-31 |
| 2026-05-06 | 13G/Ano. 1 | FMR LLCparent holding company | 1.4M | 4.1% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 1.9M | 5.4% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Capital Managementinvestment adviser | 2.6M | 7.5% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 19 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-13 | 13G/Ano. 2 | Capital World Investorsinvestment adviser | 1.6M | 4.7% | 2025-12-31 |
| 2026-01-21 | 13G/Ano. 5 | BlackRock, Inc.parent holding company | 2.9M | 8.3% | 2025-12-31 |
13F holders
Tracked managers holding FIX at their latest 13F. JSON10 of the 30 tracked managers held FIX at their latest 13F, $3.04B in total at quarter-end prices. AQR Capital Management is the largest at $2.08B (0.7% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 6 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 1.1M | $2.08B | 0.73% | -57K |
| Point72 Asset Management | 2026-06-30 | 180K | $356.2M | 0.39% | -40K |
| Renaissance Technologies | 2026-06-30 | 76K | $150.9M | 0.21% | +20K |
| D. E. Shaw & Co. | 2026-06-30 | 67K | $133.0M | 0.06% | -653 |
| Bridgewater Associates | 2026-06-30 | 49K | $96.1M | 0.39% | -38K |
| Citadel Advisors | 2026-06-30 | 47K | $92.9M | 0.01% | +23K |
| Millennium Management | 2026-06-30 | 36K | $72.2M | 0.03% | -67K |
| Coatue Management | 2026-06-30 | 18K | $35.3M | 0.07% | new |
| Two Sigma Investments | 2026-06-30 | 7K | $13.4M | 0.01% | -2K |
| Fisher Asset Management | 2026-06-30 | 311 | $617K | 0.00% | +2 |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q3 FY 2026 (quarter ended 2026-09-30) Comfort Systems USA reported revenue of $3.77B, up 53.7% from the same quarter a year earlier, and net income of $489.0M (13.91 diluted EPS). In FY 2025 it generated $1.19B of operating cash flow and spent $216.0M on buybacks and $68.8M on dividends. As of 2026-09-30, cash was $2.16B against $49.6M of debt.
- Cash
- $2.16B
- Debt
- $49.6M
- Equity
- $3.34B
- Total assets
- $9.81B
- Shares outstanding
- 34,985,904
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q3 FY 2026 | 2026-09-30 | $3.77B | $489.0M | 13.0% | 13.91 |
| Q2 FY 2026 | 2026-06-30 | $3.27B | $441.6M | 13.5% | 12.53 |
| Q1 FY 2026 | 2026-03-31 | $2.87B | $370.4M | 12.9% | 10.51 |
| Q4 FY 2025derived | 2025-12-31 | n/a | $330.8M | n/a | n/a |
| Q3 FY 2025 | 2025-09-30 | $2.45B | $291.6M | 11.9% | 8.25 |
| Q2 FY 2025 | 2025-06-30 | $2.17B | $230.8M | 10.6% | 6.53 |
| Q1 FY 2025 | 2025-03-31 | $1.83B | $169.3M | 9.2% | 4.75 |
| Q4 FY 2024derived | 2024-12-31 | $1.87B | $145.9M | 7.8% | n/a |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | n/a | $1.02B | $1.19B | $154.9M | $216.0M | $68.8M |
| FY 2024 | 2024-12-31 | $7.03B | $522.4M | $849.1M | $111.1M | $57.9M | $42.8M |
| FY 2023 | 2023-12-31 | $5.21B | $323.4M | $639.6M | $94.8M | $21.2M | $30.4M |
| FY 2022 | 2022-12-31 | $4.14B | $245.9M | $301.5M | $48.4M | $38.2M | $20.1M |
| FY 2021 | 2021-12-31 | $3.07B | $143.3M | $180.2M | $22.3M | $27.1M | $17.4M |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-09-30; shares outstanding as of 2026-10-16 from the cover page.
What this page is
Comfort Systems USA in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Comfort Systems USA (FIX), SEC CIK 1035983, listed on NYSE, classified by the SEC as electrical work. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-24.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-08-26.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-05-06.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-09-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-10-22.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-26.JSON and CSV
- Company record
- EDGAR filing index for CIK 1035983Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as electrical work
Other company pages
- CLColgate-Palmolive
- CLFCleveland-Cliffs
- CLSCelestica
- CLSKCleanSpark
- CLXClorox
- CMCanadian Imperial Bank of Commerce
- CMCSAComcast
- CMECME Group
- CMGChipotle Mexican Grill
- CMICummins
- CMSCMS Energy
- CNCCentene
- CNHCNH Industrial
- CNICanadian National Railway
- CNMCore & Main
- CNPCenterPoint Energy
- CNQCanadian Natural Resources
- COFCapital One Financial
- COHRCoherent
- COINCoinbase Global
- COMPCompass
Datasets
Frequently Asked Questions
How much of FIX is sold short?
757,613 shares were held short at the 2026-10-15 settlement, 2.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is FIX's daily short volume?
On 2026-11-02, 95,379 of the 203,155 FIX shares reported to FINRA were sold short, 46.9% of the day's reported volume. Short volume is a flow for one day, not a position.
Does FIX have fails to deliver?
The SEC's latest file shows 894 FIX shares failed to deliver at settlement 2026-09-24. Fails are reported per settlement date and published twice a month with a lag.
Are FIX insiders buying or selling?
Insiders at FIX reported 4 open-market sells worth $43.2M in the last 90 days and no open-market buys. Latest filing: Lane Brian E. (CHIEF EXECUTIVE OFF.) on 2026-08-26.
Have FIX insiders filed to sell?
31 Form 144 notices on file for FIX worth $173.7M at the prices reported; 4 in the last 90 days worth $43.2M. Latest: BRIAN E LANE filed on 2026-08-26 to sell 16,024 shares ($25.8M) from 2026-08-26.
Who owns 5% or more of FIX?
3 holders report 5% or more of FIX in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 8.3% of the class (2,917,000 shares), filed 2026-01-21 for an event on 2025-12-31.
What did FIX report last quarter?
In Q3 FY 2026 (quarter ended 2026-09-30) Comfort Systems USA reported revenue of $3.77B, up 53.7% from the same quarter a year earlier, and net income of $489.0M (13.91 diluted EPS). In FY 2025 it generated $1.19B of operating cash flow and spent $216.0M on buybacks and $68.8M on dividends. As of 2026-09-30, cash was $2.16B against $49.6M of debt.
Which tracked 13F managers own FIX?
10 of the 30 tracked 13F managers held FIX shares at their latest filing, $3.04B in all. The largest: Cliff Asness's AQR Capital Management (1.1M shares, $2.08B), Steve Cohen's Point72 Asset Management (180K shares, $356.2M), Renaissance Technologies (76K shares, $150.9M), D. E. Shaw & Co. (67K shares, $133.0M), Ray Dalio's Bridgewater Associates (49K shares, $96.1M), Ken Griffin's Citadel Advisors (47K shares, $92.9M). The table above lists all 10.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.