EMCOR Group Inc. vs Comfort Systems USA Inc.
Measured twinEME / FIXPrices through Oct 22, 2026
Why these are rivals: #2 and #3 by market value ($52B vs $32B) in Nasdaq's "Engineering & Construction" industry; SEC SIC 1731 / 1731 (same major group); #2 and #3 by market value ($52B vs $32B) with SEC SIC 1731 (Electrical Work).
The price gap between these two has a measured habit of closing. A 2 standard deviation gap becomes a paired paper idea.
- no divergence: z = -0.12 (needs |z| >= 2.0)
Business leadership
EME is the larger business
Annual revenue reported to the SEC. Scale, not market share.
| Year | EME | FIX | Larger |
|---|---|---|---|
| 2025 | $17.0B | $1.8B | EME |
| 2024 | $14.6B | $7.0B | EME |
| 2023 | $12.6B | $5.2B | EME |
| 2022 | $11.1B | $4.1B | EME |
| 2021 | $9.9B | $3.1B | EME |
| 2020 | $8.8B | $2.9B | EME |
EME led in every year with figures for both. Market value: EME $31.6B, FIX $51.5B.
Stock leadership
Neither is clearly ahead
Measured against the pair's own last 252 trading days.
The gap is 0.12 standard deviations, close to the usual relationship. 0 lead switches in the last year.
| Price change | 3 mo | 6 mo | 12 mo |
|---|---|---|---|
| EME | -11.3% | -24.4% | -4.3% |
| FIX | -26.2% | -27.9% | +54.3% |
Relationship
The gap has closed before
Only these tests can make a pair tradable on paper.
- Pass
- Aligned sessions: 2521 (needs >= 254)
- Pass
- Co-movement: daily return correlation, 252 sessions: 0.81 (needs >= 0.60)
- Pass
- Mean reversion: ADF t-statistic of the spread: -3.38 (needs <= -2.873 (5% critical value))
- Pass
- Speed: half-life of the spread, sessions: 29.43 (needs <= 63)
- Data
- Both stocks current
The twins over two years
Prices side by side, and the gap between them
EME EMCOR Group Inc. FIX Comfort Systems USA Inc.Price index, 100 = 2024-10-18. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
Spread z-score: EME relative to FIX, against the 252 sessions before each day. Above 0: EME ahead; below 0: FIX ahead. Lines at +/-2 (idea) and +/-4 (stop).
Data table (504 sessions)
| Date | EME index | FIX index | z | Ahead |
|---|---|---|---|---|
| 2026-10-22 | 145.55 | 306.41 | -0.12 | near the usual relationship |
| 2026-10-21 | 154.09 | 335.60 | -0.34 | near the usual relationship |
| 2026-10-20 | 154.82 | 334.60 | -0.30 | near the usual relationship |
| 2026-10-19 | 157.97 | 350.64 | -0.46 | near the usual relationship |
| 2026-10-16 | 159.05 | 344.65 | -0.33 | near the usual relationship |
| 2026-10-15 | 161.44 | 354.76 | -0.42 | near the usual relationship |
| 2026-10-14 | 164.27 | 369.23 | -0.55 | FIX ahead |
| 2026-10-13 | 171.03 | 389.58 | -0.63 | FIX ahead |
| 2026-10-12 | 171.72 | 392.31 | -0.65 | FIX ahead |
| 2026-10-09 | 173.99 | 410.90 | -0.84 | FIX ahead |
| 2026-10-08 | 171.52 | 408.68 | -0.89 | FIX ahead |
| 2026-10-07 | 172.93 | 417.05 | -0.96 | FIX ahead |
| 2026-10-06 | 181.72 | 435.40 | -0.93 | FIX ahead |
| 2026-10-05 | 171.73 | 410.28 | -0.92 | FIX ahead |
| 2026-10-02 | 173.36 | 413.85 | -0.92 | FIX ahead |
| 2026-10-01 | 169.49 | 403.62 | -0.92 | FIX ahead |
| 2026-09-30 | 166.28 | 396.15 | -0.93 | FIX ahead |
| 2026-09-29 | 167.94 | 398.78 | -0.91 | FIX ahead |
| 2026-09-28 | 168.71 | 397.16 | -0.88 | FIX ahead |
| 2026-09-25 | 167.98 | 397.31 | -0.91 | FIX ahead |
| 2026-09-24 | 165.72 | 393.59 | -0.93 | FIX ahead |
| 2026-09-23 | 165.69 | 389.40 | -0.89 | FIX ahead |
| 2026-09-22 | 166.73 | 389.22 | -0.86 | FIX ahead |
| 2026-09-21 | 166.99 | 391.00 | -0.88 | FIX ahead |
| 2026-09-18 | 165.31 | 395.50 | -0.99 | FIX ahead |
| 2026-09-17 | 160.72 | 376.96 | -0.90 | FIX ahead |
| 2026-09-16 | 162.97 | 380.17 | -0.88 | FIX ahead |
| 2026-09-15 | 162.10 | 377.64 | -0.88 | FIX ahead |
| 2026-09-14 | 165.23 | 379.08 | -0.81 | FIX ahead |
| 2026-09-11 | 172.05 | 404.95 | -0.94 | FIX ahead |
| 2026-09-10 | 164.92 | 381.00 | -0.86 | FIX ahead |
| 2026-09-09 | 166.24 | 386.82 | -0.90 | FIX ahead |
| 2026-09-08 | 170.40 | 394.81 | -0.88 | FIX ahead |
| 2026-09-04 | 166.21 | 385.67 | -0.89 | FIX ahead |
| 2026-09-03 | 163.38 | 378.45 | -0.89 | FIX ahead |
| 2026-09-02 | 161.82 | 373.65 | -0.88 | FIX ahead |
| 2026-09-01 | 162.04 | 372.27 | -0.86 | FIX ahead |
| 2026-08-31 | 161.89 | 370.17 | -0.85 | FIX ahead |
| 2026-08-28 | 163.13 | 363.73 | -0.74 | FIX ahead |
| 2026-08-27 | 170.81 | 386.78 | -0.82 | FIX ahead |
| 2026-08-26 | 168.29 | 386.95 | -0.89 | FIX ahead |
| 2026-08-25 | 163.06 | 374.09 | -0.89 | FIX ahead |
| 2026-08-24 | 168.58 | 385.52 | -0.88 | FIX ahead |
| 2026-08-21 | 171.16 | 396.52 | -0.94 | FIX ahead |
| 2026-08-20 | 173.53 | 400.67 | -0.93 | FIX ahead |
| 2026-08-19 | 177.59 | 406.20 | -0.90 | FIX ahead |
| 2026-08-18 | 181.72 | 416.51 | -0.91 | FIX ahead |
| 2026-08-17 | 190.10 | 450.54 | -1.07 | FIX ahead |
| 2026-08-14 | 184.31 | 424.88 | -0.95 | FIX ahead |
| 2026-08-13 | 183.20 | 413.77 | -0.87 | FIX ahead |
| 2026-08-12 | 183.67 | 416.44 | -0.89 | FIX ahead |
| 2026-08-11 | 180.03 | 404.28 | -0.86 | FIX ahead |
| 2026-08-10 | 178.37 | 401.12 | -0.87 | FIX ahead |
| 2026-08-07 | 180.04 | 405.84 | -0.89 | FIX ahead |
| 2026-08-06 | 178.17 | 410.40 | -0.99 | FIX ahead |
| 2026-08-05 | 181.20 | 416.01 | -0.98 | FIX ahead |
| 2026-08-04 | 180.69 | 425.31 | -1.09 | FIX ahead |
| 2026-08-03 | 180.15 | 424.14 | -1.10 | FIX ahead |
| 2026-07-31 | 175.75 | 414.26 | -1.11 | FIX ahead |
| 2026-07-30 | 176.83 | 406.63 | -1.02 | FIX ahead |
| 2026-07-29 | 148.21 | 364.03 | -1.30 | FIX ahead |
| 2026-07-28 | 155.56 | 389.50 | -1.39 | FIX ahead |
| 2026-07-27 | 163.70 | 414.43 | -1.44 | FIX ahead |
| 2026-07-24 | 164.16 | 415.19 | -1.44 | FIX ahead |
| 2026-07-23 | 169.50 | 438.56 | -1.54 | FIX ahead |
| 2026-07-22 | 166.43 | 428.96 | -1.53 | FIX ahead |
| 2026-07-21 | 167.56 | 424.75 | -1.47 | FIX ahead |
| 2026-07-20 | 163.98 | 410.06 | -1.43 | FIX ahead |
| 2026-07-17 | 164.01 | 400.93 | -1.34 | FIX ahead |
| 2026-07-16 | 165.30 | 402.50 | -1.34 | FIX ahead |
| 2026-07-15 | 169.64 | 415.94 | -1.37 | FIX ahead |
| 2026-07-14 | 170.75 | 425.13 | -1.44 | FIX ahead |
| 2026-07-13 | 168.58 | 414.82 | -1.40 | FIX ahead |
| 2026-07-10 | 172.30 | 420.58 | -1.38 | FIX ahead |
| 2026-07-09 | 172.66 | 426.65 | -1.44 | FIX ahead |
| 2026-07-08 | 169.48 | 403.54 | -1.30 | FIX ahead |
| 2026-07-07 | 169.34 | 403.18 | -1.31 | FIX ahead |
| 2026-07-06 | 173.51 | 429.43 | -1.47 | FIX ahead |
| 2026-07-02 | 170.73 | 417.04 | -1.43 | FIX ahead |
| 2026-07-01 | 177.27 | 446.70 | -1.56 | FIX ahead |
| 2026-06-30 | 182.90 | 474.67 | -1.69 | FIX ahead |
| 2026-06-29 | 179.49 | 466.71 | -1.71 | FIX ahead |
| 2026-06-26 | 175.89 | 444.08 | -1.61 | FIX ahead |
| 2026-06-25 | 190.12 | 483.20 | -1.65 | FIX ahead |
| 2026-06-24 | 186.71 | 468.09 | -1.61 | FIX ahead |
| 2026-06-23 | 184.82 | 456.98 | -1.57 | FIX ahead |
| 2026-06-22 | 191.49 | 494.93 | -1.75 | FIX ahead |
| 2026-06-18 | 184.38 | 471.19 | -1.72 | FIX ahead |
| 2026-06-17 | 182.37 | 462.66 | -1.71 | FIX ahead |
| 2026-06-16 | 183.98 | 458.38 | -1.65 | FIX ahead |
| 2026-06-15 | 185.63 | 467.50 | -1.71 | FIX ahead |
| 2026-06-12 | 181.39 | 449.68 | -1.67 | FIX ahead |
| 2026-06-11 | 178.85 | 441.50 | -1.66 | FIX ahead |
| 2026-06-10 | 171.18 | 411.81 | -1.58 | FIX ahead |
| 2026-06-09 | 182.43 | 438.65 | -1.59 | FIX ahead |
| 2026-06-08 | 181.56 | 443.56 | -1.67 | FIX ahead |
| 2026-06-05 | 180.16 | 441.62 | -1.69 | FIX ahead |
| 2026-06-04 | 186.32 | 458.55 | -1.73 | FIX ahead |
| 2026-06-03 | 185.03 | 443.08 | -1.63 | FIX ahead |
| 2026-06-02 | 182.32 | 451.04 | -1.78 | FIX ahead |
| 2026-06-01 | 183.13 | 428.19 | -1.57 | FIX ahead |
| 2026-05-29 | 182.22 | 437.85 | -1.69 | FIX ahead |
| 2026-05-28 | 186.99 | 444.30 | -1.66 | FIX ahead |
| 2026-05-27 | 188.49 | 447.16 | -1.67 | FIX ahead |
| 2026-05-26 | 189.85 | 451.11 | -1.69 | FIX ahead |
| 2026-05-22 | 187.09 | 437.86 | -1.64 | FIX ahead |
| 2026-05-21 | 187.16 | 439.56 | -1.67 | FIX ahead |
| 2026-05-20 | 188.03 | 439.60 | -1.67 | FIX ahead |
| 2026-05-19 | 188.29 | 437.20 | -1.66 | FIX ahead |
| 2026-05-18 | 193.32 | 444.13 | -1.63 | FIX ahead |
| 2026-05-15 | 201.24 | 477.26 | -1.77 | FIX ahead |
| 2026-05-14 | 204.97 | 489.14 | -1.82 | FIX ahead |
| 2026-05-13 | 203.42 | 487.29 | -1.85 | FIX ahead |
| 2026-05-12 | 203.84 | 482.90 | -1.82 | FIX ahead |
| 2026-05-11 | 205.29 | 486.89 | -1.85 | FIX ahead |
| 2026-05-08 | 203.12 | 467.59 | -1.74 | FIX ahead |
| 2026-05-07 | 203.65 | 465.11 | -1.72 | FIX ahead |
| 2026-05-06 | 207.99 | 481.75 | -1.80 | FIX ahead |
| 2026-05-05 | 205.68 | 471.15 | -1.77 | FIX ahead |
| 2026-05-04 | 200.61 | 453.12 | -1.73 | FIX ahead |
| 2026-05-01 | 199.12 | 447.15 | -1.72 | FIX ahead |
| 2026-04-30 | 196.52 | 440.74 | -1.73 | FIX ahead |
| 2026-04-29 | 183.67 | 412.93 | -1.76 | FIX ahead |
| 2026-04-28 | 190.37 | 411.75 | -1.61 | FIX ahead |
| 2026-04-27 | 195.14 | 429.67 | -1.70 | FIX ahead |
| 2026-04-24 | 191.72 | 413.40 | -1.63 | FIX ahead |
| 2026-04-23 | 192.43 | 424.85 | -1.74 | FIX ahead |
| 2026-04-22 | 189.54 | 413.01 | -1.70 | FIX ahead |
| 2026-04-21 | 184.69 | 400.96 | -1.70 | FIX ahead |
| 2026-04-20 | 183.17 | 402.38 | -1.76 | FIX ahead |
| 2026-04-17 | 177.65 | 395.28 | -1.83 | FIX ahead |
| 2026-04-16 | 174.60 | 384.63 | -1.81 | FIX ahead |
| 2026-04-15 | 177.11 | 394.92 | -1.88 | FIX ahead |
| 2026-04-14 | 179.44 | 395.29 | -1.84 | FIX ahead |
| 2026-04-13 | 179.00 | 389.86 | -1.81 | FIX ahead |
| 2026-04-10 | 176.85 | 381.48 | -1.78 | FIX ahead |
| 2026-04-09 | 176.40 | 377.08 | -1.76 | FIX ahead |
| 2026-04-08 | 173.93 | 365.27 | -1.70 | FIX ahead |
| 2026-04-07 | 165.39 | 341.26 | -1.64 | FIX ahead |
| 2026-04-06 | 166.95 | 343.46 | -1.64 | FIX ahead |
| 2026-04-02 | 166.68 | 339.41 | -1.61 | FIX ahead |
| 2026-04-01 | 167.40 | 342.13 | -1.64 | FIX ahead |
| 2026-03-31 | 162.72 | 330.27 | -1.62 | FIX ahead |
| 2026-03-30 | 154.52 | 304.92 | -1.51 | FIX ahead |
| 2026-03-27 | 161.52 | 327.34 | -1.64 | FIX ahead |
| 2026-03-26 | 160.07 | 325.40 | -1.67 | FIX ahead |
| 2026-03-25 | 168.55 | 352.22 | -1.80 | FIX ahead |
| 2026-03-24 | 167.78 | 350.03 | -1.81 | FIX ahead |
| 2026-03-23 | 164.12 | 337.27 | -1.76 | FIX ahead |
| 2026-03-20 | 159.77 | 324.94 | -1.74 | FIX ahead |
| 2026-03-19 | 165.59 | 345.98 | -1.87 | FIX ahead |
| 2026-03-18 | 162.57 | 340.81 | -1.90 | FIX ahead |
| 2026-03-17 | 160.57 | 341.16 | -1.98 | FIX ahead |
| 2026-03-16 | 160.12 | 338.67 | -1.98 | FIX ahead |
| 2026-03-13 | 156.46 | 327.00 | -1.95 | FIX ahead |
| 2026-03-12 | 156.59 | 329.01 | -1.99 | FIX ahead |
| 2026-03-11 | 158.72 | 337.05 | -2.06 | FIX ahead |
| 2026-03-10 | 159.43 | 331.37 | -1.99 | FIX ahead |
| 2026-03-09 | 158.50 | 328.69 | -2.00 | FIX ahead |
| 2026-03-06 | 155.55 | 306.33 | -1.79 | FIX ahead |
| 2026-03-05 | 158.46 | 322.90 | -1.96 | FIX ahead |
| 2026-03-04 | 163.28 | 342.57 | -2.11 | FIX ahead |
| 2026-03-03 | 162.27 | 333.18 | -2.04 | FIX ahead |
| 2026-03-02 | 162.16 | 344.46 | -2.22 | FIX ahead |
| 2026-02-27 | 159.70 | 342.33 | -2.29 | FIX ahead |
| 2026-02-26 | 164.45 | 344.45 | -2.21 | FIX ahead |
| 2026-02-25 | 176.71 | 347.42 | -1.95 | FIX ahead |
| 2026-02-24 | 177.81 | 351.72 | -2.00 | FIX ahead |
| 2026-02-23 | 177.78 | 338.55 | -1.84 | FIX ahead |
| 2026-02-20 | 179.13 | 350.20 | -1.98 | FIX ahead |
| 2026-02-19 | 177.09 | 328.96 | -1.76 | FIX ahead |
| 2026-02-18 | 172.58 | 316.01 | -1.71 | FIX ahead |
| 2026-02-17 | 175.76 | 320.39 | -1.71 | FIX ahead |
| 2026-02-13 | 176.49 | 320.44 | -1.71 | FIX ahead |
| 2026-02-12 | 172.55 | 311.35 | -1.70 | FIX ahead |
| 2026-02-11 | 178.19 | 320.60 | -1.70 | FIX ahead |
| 2026-02-10 | 171.70 | 304.07 | -1.64 | FIX ahead |
| 2026-02-09 | 171.08 | 307.43 | -1.73 | FIX ahead |
| 2026-02-06 | 168.46 | 294.64 | -1.61 | FIX ahead |
| 2026-02-05 | 158.17 | 274.94 | -1.60 | FIX ahead |
| 2026-02-04 | 156.17 | 268.19 | -1.56 | FIX ahead |
| 2026-02-03 | 164.09 | 289.79 | -1.71 | FIX ahead |
| 2026-02-02 | 161.25 | 281.71 | -1.67 | FIX ahead |
| 2026-01-30 | 158.84 | 273.53 | -1.62 | FIX ahead |
| 2026-01-29 | 160.97 | 280.56 | -1.69 | FIX ahead |
| 2026-01-28 | 160.30 | 279.99 | -1.72 | FIX ahead |
| 2026-01-27 | 157.86 | 277.91 | -1.78 | FIX ahead |
| 2026-01-26 | 155.79 | 270.05 | -1.72 | FIX ahead |
| 2026-01-23 | 153.00 | 268.58 | -1.81 | FIX ahead |
| 2026-01-22 | 154.91 | 271.04 | -1.81 | FIX ahead |
| 2026-01-21 | 156.19 | 274.94 | -1.86 | FIX ahead |
| 2026-01-20 | 151.58 | 271.77 | -1.98 | FIX ahead |
| 2026-01-16 | 153.98 | 268.23 | -1.85 | FIX ahead |
| 2026-01-15 | 150.33 | 261.30 | -1.86 | FIX ahead |
| 2026-01-14 | 145.62 | 252.22 | -1.86 | FIX ahead |
| 2026-01-13 | 147.78 | 257.01 | -1.90 | FIX ahead |
| 2026-01-12 | 145.60 | 248.64 | -1.83 | FIX ahead |
| 2026-01-09 | 142.43 | 241.99 | -1.82 | FIX ahead |
| 2026-01-08 | 138.46 | 232.67 | -1.78 | FIX ahead |
| 2026-01-07 | 143.47 | 247.91 | -1.95 | FIX ahead |
| 2026-01-06 | 144.56 | 247.91 | -1.94 | FIX ahead |
| 2026-01-05 | 144.04 | 247.24 | -1.96 | FIX ahead |
| 2026-01-02 | 140.75 | 240.37 | -1.96 | FIX ahead |
| 2025-12-31 | 134.83 | 223.52 | -1.82 | FIX ahead |
| 2025-12-30 | 136.05 | 226.79 | -1.87 | FIX ahead |
| 2025-12-29 | 137.36 | 227.68 | -1.86 | FIX ahead |
| 2025-12-26 | 138.20 | 230.84 | -1.92 | FIX ahead |
| 2025-12-24 | 137.98 | 229.46 | -1.92 | FIX ahead |
| 2025-12-23 | 137.90 | 231.20 | -1.99 | FIX ahead |
| 2025-12-22 | 137.05 | 227.71 | -1.96 | FIX ahead |
| 2025-12-19 | 134.75 | 225.31 | -2.02 | FIX ahead |
| 2025-12-18 | 135.07 | 219.99 | -1.89 | FIX ahead |
| 2025-12-17 | 131.46 | 211.67 | -1.85 | FIX ahead |
| 2025-12-16 | 137.65 | 231.95 | -2.14 | FIX ahead |
| 2025-12-15 | 137.54 | 231.95 | -2.17 | FIX ahead |
| 2025-12-12 | 137.45 | 231.82 | -2.21 | FIX ahead |
| 2025-12-11 | 140.96 | 245.47 | -2.43 | FIX ahead |
| 2025-12-10 | 138.19 | 244.61 | -2.58 | FIX ahead |
| 2025-12-09 | 137.47 | 235.57 | -2.42 | FIX ahead |
| 2025-12-08 | 138.67 | 236.98 | -2.44 | FIX ahead |
| 2025-12-05 | 137.44 | 239.85 | -2.61 | FIX ahead |
| 2025-12-04 | 140.03 | 240.61 | -2.56 | FIX ahead |
| 2025-12-03 | 134.88 | 227.36 | -2.48 | FIX ahead |
| 2025-12-02 | 133.64 | 224.12 | -2.49 | FIX ahead |
| 2025-12-01 | 133.95 | 230.21 | -2.69 | FIX ahead |
| 2025-11-28 | 135.56 | 233.98 | -2.78 | FIX ahead |
| 2025-11-26 | 134.60 | 232.54 | -2.84 | FIX ahead |
| 2025-11-25 | 133.47 | 229.21 | -2.85 | FIX ahead |
| 2025-11-24 | 132.86 | 226.34 | -2.85 | FIX ahead |
| 2025-11-21 | 128.17 | 214.13 | -2.77 | FIX ahead |
| 2025-11-20 | 128.51 | 209.85 | -2.65 | FIX ahead |
| 2025-11-19 | 133.52 | 222.85 | -2.86 | FIX ahead |
| 2025-11-18 | 135.45 | 220.58 | -2.73 | FIX ahead |
| 2025-11-17 | 134.75 | 220.30 | -2.81 | FIX ahead |
| 2025-11-14 | 136.61 | 217.85 | -2.67 | FIX ahead |
| 2025-11-13 | 136.41 | 214.95 | -2.62 | FIX ahead |
| 2025-11-12 | 141.79 | 233.07 | -3.01 | FIX ahead |
| 2025-11-11 | 141.24 | 228.61 | -2.95 | FIX ahead |
| 2025-11-10 | 144.65 | 233.30 | -2.98 | FIX ahead |
| 2025-11-07 | 143.11 | 228.78 | -2.96 | FIX ahead |
| 2025-11-06 | 144.08 | 229.39 | -2.99 | FIX ahead |
| 2025-11-05 | 148.86 | 236.57 | -3.03 | FIX ahead |
| 2025-11-04 | 144.25 | 228.95 | -3.08 | FIX ahead |
| 2025-11-03 | 148.44 | 234.15 | -3.10 | FIX ahead |
| 2025-10-31 | 148.94 | 231.25 | -3.03 | FIX ahead |
| 2025-10-30 | 142.81 | 230.71 | -3.46 | FIX ahead |
| 2025-10-29 | 171.24 | 242.05 | -2.30 | FIX ahead |
| 2025-10-28 | 165.61 | 234.94 | -2.37 | FIX ahead |
| 2025-10-27 | 166.36 | 233.86 | -2.32 | FIX ahead |
| 2025-10-24 | 164.91 | 235.11 | -2.49 | FIX ahead |
| 2025-10-23 | 153.45 | 197.59 | -1.56 | FIX ahead |
| 2025-10-22 | 146.10 | 189.38 | -1.64 | FIX ahead |
| 2025-10-21 | 152.06 | 198.63 | -1.73 | FIX ahead |
| 2025-10-20 | 154.31 | 200.40 | -1.70 | FIX ahead |
| 2025-10-17 | 151.85 | 198.29 | -1.77 | FIX ahead |
| 2025-10-16 | 151.46 | 200.89 | -1.94 | FIX ahead |
| 2025-10-15 | 152.21 | 200.49 | -1.89 | FIX ahead |
| 2025-10-14 | 148.57 | 199.24 | -2.09 | FIX ahead |
| 2025-10-13 | 149.21 | 202.61 | -2.24 | FIX ahead |
| 2025-10-10 | 146.28 | 195.45 | -2.11 | FIX ahead |
| 2025-10-09 | 150.05 | 199.91 | -2.11 | FIX ahead |
| 2025-10-08 | 153.18 | 202.28 | -2.05 | FIX ahead |
| 2025-10-07 | 148.34 | 195.56 | -2.06 | FIX ahead |
| 2025-10-06 | 147.66 | 197.69 | -2.25 | FIX ahead |
| 2025-10-03 | 144.23 | 195.91 | -2.43 | FIX ahead |
| 2025-10-02 | 145.52 | 199.50 | -2.57 | FIX ahead |
| 2025-10-01 | 144.34 | 199.82 | -2.72 | FIX ahead |
| 2025-09-30 | 143.15 | 197.63 | -2.74 | FIX ahead |
| 2025-09-29 | 141.19 | 192.03 | -2.63 | FIX ahead |
| 2025-09-26 | 141.18 | 192.64 | -2.71 | FIX ahead |
| 2025-09-25 | 137.74 | 187.26 | -2.72 | FIX ahead |
| 2025-09-24 | 138.09 | 189.55 | -2.88 | FIX ahead |
| 2025-09-23 | 142.09 | 192.61 | -2.79 | FIX ahead |
| 2025-09-22 | 144.54 | 196.78 | -2.89 | FIX ahead |
| 2025-09-19 | 139.29 | 191.05 | -3.04 | FIX ahead |
| 2025-09-18 | 138.61 | 191.45 | -3.19 | FIX ahead |
| 2025-09-17 | 135.92 | 182.72 | -2.92 | FIX ahead |
| 2025-09-16 | 136.42 | 186.13 | -3.17 | FIX ahead |
| 2025-09-15 | 138.57 | 187.30 | -3.12 | FIX ahead |
| 2025-09-12 | 138.64 | 180.51 | -2.70 | FIX ahead |
| 2025-09-11 | 141.05 | 183.19 | -2.71 | FIX ahead |
| 2025-09-10 | 139.82 | 180.13 | -2.65 | FIX ahead |
| 2025-09-09 | 137.31 | 169.93 | -2.16 | FIX ahead |
| 2025-09-08 | 136.99 | 171.45 | -2.34 | FIX ahead |
| 2025-09-05 | 137.83 | 169.16 | -2.11 | FIX ahead |
| 2025-09-04 | 141.18 | 173.38 | -2.15 | FIX ahead |
| 2025-09-03 | 138.25 | 167.81 | -2.02 | FIX ahead |
| 2025-09-02 | 136.73 | 167.32 | -2.16 | FIX ahead |
| 2025-08-29 | 136.64 | 168.46 | -2.29 | FIX ahead |
| 2025-08-28 | 139.56 | 174.84 | -2.54 | FIX ahead |
| 2025-08-27 | 137.52 | 170.00 | -2.40 | FIX ahead |
| 2025-08-26 | 136.39 | 169.42 | -2.50 | FIX ahead |
| 2025-08-25 | 134.25 | 165.54 | -2.44 | FIX ahead |
| 2025-08-22 | 134.49 | 165.13 | -2.42 | FIX ahead |
| 2025-08-21 | 134.63 | 166.21 | -2.54 | FIX ahead |
| 2025-08-20 | 133.36 | 163.12 | -2.44 | FIX ahead |
| 2025-08-19 | 133.80 | 163.80 | -2.50 | FIX ahead |
| 2025-08-18 | 135.08 | 166.63 | -2.65 | FIX ahead |
| 2025-08-15 | 133.47 | 163.06 | -2.55 | FIX ahead |
| 2025-08-14 | 134.38 | 165.22 | -2.69 | FIX ahead |
| 2025-08-13 | 135.92 | 168.15 | -2.84 | FIX ahead |
| 2025-08-12 | 139.41 | 172.11 | -2.86 | FIX ahead |
| 2025-08-11 | 135.47 | 166.05 | -2.80 | FIX ahead |
| 2025-08-08 | 136.25 | 165.68 | -2.72 | FIX ahead |
| 2025-08-07 | 136.09 | 166.31 | -2.86 | FIX ahead |
| 2025-08-06 | 137.14 | 165.36 | -2.68 | FIX ahead |
| 2025-08-05 | 137.74 | 165.60 | -2.68 | FIX ahead |
| 2025-08-04 | 138.67 | 167.45 | -2.81 | FIX ahead |
| 2025-08-01 | 137.67 | 166.52 | -2.89 | FIX ahead |
| 2025-07-31 | 138.29 | 168.44 | -3.07 | FIX ahead |
| 2025-07-30 | 140.90 | 168.36 | -2.78 | FIX ahead |
| 2025-07-29 | 140.22 | 164.70 | -2.51 | FIX ahead |
| 2025-07-28 | 139.21 | 165.96 | -2.82 | FIX ahead |
| 2025-07-25 | 139.96 | 164.95 | -2.66 | FIX ahead |
| 2025-07-24 | 127.56 | 134.80 | -0.72 | FIX ahead |
| 2025-07-23 | 126.43 | 131.22 | -0.41 | near the usual relationship |
| 2025-07-22 | 123.19 | 127.45 | -0.36 | near the usual relationship |
| 2025-07-21 | 123.52 | 130.51 | -0.73 | FIX ahead |
| 2025-07-18 | 124.64 | 132.73 | -0.87 | FIX ahead |
| 2025-07-17 | 123.25 | 131.84 | -0.96 | FIX ahead |
| 2025-07-16 | 121.94 | 130.92 | -1.03 | FIX ahead |
| 2025-07-15 | 121.16 | 129.09 | -0.91 | FIX ahead |
| 2025-07-14 | 122.73 | 130.04 | -0.82 | FIX ahead |
| 2025-07-11 | 122.14 | 129.21 | -0.80 | FIX ahead |
| 2025-07-10 | 120.68 | 127.84 | -0.82 | FIX ahead |
| 2025-07-09 | 120.39 | 128.14 | -0.91 | FIX ahead |
| 2025-07-08 | 119.31 | 126.32 | -0.83 | FIX ahead |
| 2025-07-07 | 121.47 | 129.68 | -0.98 | FIX ahead |
| 2025-07-03 | 120.60 | 129.56 | -1.08 | FIX ahead |
| 2025-07-02 | 119.41 | 126.91 | -0.91 | FIX ahead |
| 2025-07-01 | 117.00 | 124.94 | -1.00 | FIX ahead |
| 2025-06-30 | 117.88 | 128.42 | -1.34 | FIX ahead |
| 2025-06-27 | 116.94 | 128.13 | -1.44 | FIX ahead |
| 2025-06-26 | 112.62 | 123.60 | -1.48 | FIX ahead |
| 2025-06-25 | 110.76 | 121.57 | -1.49 | FIX ahead |
| 2025-06-24 | 110.34 | 122.94 | -1.75 | FIX ahead |
| 2025-06-23 | 109.01 | 120.46 | -1.63 | FIX ahead |
| 2025-06-20 | 106.90 | 119.75 | -1.87 | FIX ahead |
| 2025-06-18 | 106.94 | 119.51 | -1.85 | FIX ahead |
| 2025-06-17 | 106.09 | 118.64 | -1.88 | FIX ahead |
| 2025-06-16 | 107.07 | 119.97 | -1.93 | FIX ahead |
| 2025-06-13 | 105.33 | 118.01 | -1.94 | FIX ahead |
| 2025-06-12 | 104.67 | 120.05 | -2.35 | FIX ahead |
| 2025-06-11 | 104.00 | 118.96 | -2.33 | FIX ahead |
| 2025-06-10 | 102.69 | 116.81 | -2.26 | FIX ahead |
| 2025-06-09 | 104.42 | 120.07 | -2.48 | FIX ahead |
| 2025-06-06 | 107.73 | 122.27 | -2.28 | FIX ahead |
| 2025-06-05 | 106.68 | 119.54 | -2.09 | FIX ahead |
| 2025-06-04 | 106.37 | 119.42 | -2.15 | FIX ahead |
| 2025-06-03 | 106.62 | 118.98 | -2.07 | FIX ahead |
| 2025-06-02 | 103.48 | 114.26 | -1.91 | FIX ahead |
| 2025-05-30 | 103.99 | 114.54 | -1.89 | FIX ahead |
| 2025-05-29 | 103.20 | 114.68 | -2.07 | FIX ahead |
| 2025-05-28 | 103.39 | 114.22 | -1.99 | FIX ahead |
| 2025-05-27 | 104.82 | 116.25 | -2.08 | FIX ahead |
| 2025-05-23 | 102.11 | 112.92 | -2.05 | FIX ahead |
| 2025-05-22 | 101.01 | 110.71 | -1.91 | FIX ahead |
| 2025-05-21 | 102.21 | 111.43 | -1.84 | FIX ahead |
| 2025-05-20 | 104.14 | 113.18 | -1.80 | FIX ahead |
| 2025-05-19 | 103.58 | 112.62 | -1.83 | FIX ahead |
| 2025-05-16 | 103.68 | 113.04 | -1.90 | FIX ahead |
| 2025-05-15 | 102.33 | 110.98 | -1.83 | FIX ahead |
| 2025-05-14 | 102.83 | 111.97 | -1.92 | FIX ahead |
| 2025-05-13 | 104.11 | 111.42 | -1.62 | FIX ahead |
| 2025-05-12 | 100.79 | 108.22 | -1.69 | FIX ahead |
| 2025-05-09 | 96.85 | 104.15 | -1.74 | FIX ahead |
| 2025-05-08 | 97.02 | 105.18 | -1.91 | FIX ahead |
| 2025-05-07 | 95.68 | 103.50 | -1.89 | FIX ahead |
| 2025-05-06 | 95.44 | 102.74 | -1.81 | FIX ahead |
| 2025-05-05 | 96.09 | 104.25 | -1.99 | FIX ahead |
| 2025-05-02 | 94.81 | 103.49 | -2.13 | FIX ahead |
| 2025-05-01 | 90.92 | 100.12 | -2.34 | FIX ahead |
| 2025-04-30 | 88.31 | 95.21 | -1.95 | FIX ahead |
| 2025-04-29 | 91.03 | 95.21 | -1.37 | FIX ahead |
| 2025-04-28 | 90.42 | 94.46 | -1.35 | FIX ahead |
| 2025-04-25 | 90.41 | 95.18 | -1.51 | FIX ahead |
| 2025-04-24 | 88.29 | 90.10 | -0.90 | FIX ahead |
| 2025-04-23 | 84.66 | 85.19 | -0.63 | FIX ahead |
| 2025-04-22 | 82.25 | 81.51 | -0.33 | near the usual relationship |
| 2025-04-21 | 79.94 | 78.60 | -0.18 | near the usual relationship |
| 2025-04-17 | 83.49 | 83.33 | -0.48 | near the usual relationship |
| 2025-04-16 | 84.28 | 83.62 | -0.36 | near the usual relationship |
| 2025-04-15 | 85.97 | 85.31 | -0.37 | near the usual relationship |
| 2025-04-14 | 85.02 | 84.21 | -0.33 | near the usual relationship |
| 2025-04-11 | 84.57 | 83.53 | -0.28 | near the usual relationship |
| 2025-04-10 | 82.69 | 80.81 | -0.08 | near the usual relationship |
| 2025-04-09 | 86.17 | 85.45 | -0.37 | near the usual relationship |
| 2025-04-08 | 78.08 | 74.77 | +0.32 | near the usual relationship |
| 2025-04-07 | 77.24 | 74.75 | +0.11 | near the usual relationship |
| 2025-04-04 | 75.38 | 71.01 | +0.65 | EME ahead |
| 2025-04-03 | 78.14 | 74.57 | +0.39 | near the usual relationship |
| 2025-04-02 | 84.84 | 81.98 | +0.15 | near the usual relationship |
| 2025-04-01 | 82.76 | 79.03 | +0.38 | near the usual relationship |
| 2025-03-31 | 81.46 | 77.20 | +0.54 | EME ahead |
| 2025-03-28 | 81.74 | 77.62 | +0.50 | EME ahead |
| 2025-03-27 | 83.60 | 79.58 | +0.45 | near the usual relationship |
| 2025-03-26 | 86.45 | 82.77 | +0.34 | near the usual relationship |
| 2025-03-25 | 90.86 | 89.35 | -0.18 | near the usual relationship |
| 2025-03-24 | 90.99 | 90.83 | -0.48 | near the usual relationship |
| 2025-03-21 | 87.09 | 84.34 | +0.12 | near the usual relationship |
| 2025-03-20 | 88.05 | 85.45 | +0.09 | near the usual relationship |
| 2025-03-19 | 87.83 | 85.63 | +0.00 | near the usual relationship |
| 2025-03-18 | 85.19 | 81.26 | +0.43 | near the usual relationship |
| 2025-03-17 | 87.07 | 82.95 | +0.46 | near the usual relationship |
| 2025-03-14 | 85.62 | 81.70 | +0.44 | near the usual relationship |
| 2025-03-13 | 82.19 | 78.38 | +0.45 | near the usual relationship |
| 2025-03-12 | 84.28 | 80.45 | +0.44 | near the usual relationship |
| 2025-03-11 | 82.12 | 77.74 | +0.61 | EME ahead |
| 2025-03-10 | 79.60 | 75.03 | +0.70 | EME ahead |
| 2025-03-07 | 82.72 | 77.65 | +0.78 | EME ahead |
| 2025-03-06 | 82.62 | 78.58 | +0.54 | EME ahead |
| 2025-03-05 | 86.53 | 83.51 | +0.26 | near the usual relationship |
| 2025-03-04 | 85.53 | 81.23 | +0.57 | EME ahead |
| 2025-03-03 | 87.22 | 82.77 | +0.59 | EME ahead |
| 2025-02-28 | 90.12 | 87.02 | +0.27 | near the usual relationship |
| 2025-02-27 | 88.75 | 85.41 | +0.34 | near the usual relationship |
| 2025-02-26 | 92.76 | 89.76 | +0.25 | near the usual relationship |
| 2025-02-25 | 87.72 | 88.04 | -0.41 | near the usual relationship |
| 2025-02-24 | 86.27 | 85.87 | -0.26 | near the usual relationship |
| 2025-02-21 | 89.11 | 87.18 | +0.06 | near the usual relationship |
| 2025-02-20 | 93.59 | 91.52 | +0.07 | near the usual relationship |
| 2025-02-19 | 95.84 | 94.81 | -0.13 | near the usual relationship |
| 2025-02-18 | 95.63 | 94.50 | -0.10 | near the usual relationship |
| 2025-02-14 | 93.95 | 93.70 | -0.26 | near the usual relationship |
| 2025-02-13 | 94.23 | 94.61 | -0.37 | near the usual relationship |
| 2025-02-12 | 95.54 | 95.40 | -0.27 | near the usual relationship |
| 2025-02-11 | 98.35 | 104.09 | -1.29 | FIX ahead |
| 2025-02-10 | 102.81 | 111.35 | -1.69 | FIX ahead |
| 2025-02-07 | 101.77 | 110.18 | -1.70 | FIX ahead |
| 2025-02-06 | 102.96 | 112.50 | -1.87 | FIX ahead |
| 2025-02-05 | 100.64 | 106.65 | -1.33 | FIX ahead |
| 2025-02-04 | 98.07 | 101.80 | -0.96 | FIX ahead |
| 2025-02-03 | 98.82 | 102.28 | -0.91 | FIX ahead |
| 2025-01-31 | 98.75 | 104.60 | -1.32 | FIX ahead |
| 2025-01-30 | 98.89 | 103.91 | -1.18 | FIX ahead |
| 2025-01-29 | 96.84 | 102.12 | -1.25 | FIX ahead |
| 2025-01-28 | 96.59 | 99.67 | -0.87 | FIX ahead |
| 2025-01-27 | 94.77 | 96.81 | -0.69 | FIX ahead |
| 2025-01-24 | 117.17 | 130.33 | -2.24 | FIX ahead |
| 2025-01-23 | 117.20 | 131.08 | -2.37 | FIX ahead |
| 2025-01-22 | 118.13 | 131.79 | -2.35 | FIX ahead |
| 2025-01-21 | 116.18 | 126.75 | -1.96 | FIX ahead |
| 2025-01-17 | 111.62 | 120.65 | -1.81 | FIX ahead |
| 2025-01-16 | 112.62 | 120.98 | -1.71 | FIX ahead |
| 2025-01-15 | 110.64 | 118.29 | -1.63 | FIX ahead |
| 2025-01-14 | 108.63 | 111.71 | -0.90 | FIX ahead |
| 2025-01-13 | 103.09 | 105.18 | -0.75 | FIX ahead |
| 2025-01-10 | 102.93 | 105.39 | -0.82 | FIX ahead |
| 2025-01-08 | 104.88 | 107.84 | -0.90 | FIX ahead |
| 2025-01-07 | 103.62 | 108.44 | -1.24 | FIX ahead |
| 2025-01-06 | 105.60 | 109.22 | -1.02 | FIX ahead |
| 2025-01-03 | 104.39 | 107.43 | -0.93 | FIX ahead |
| 2025-01-02 | 100.86 | 102.62 | -0.71 | FIX ahead |
| 2024-12-31 | 100.04 | 101.56 | -0.67 | FIX ahead |
| 2024-12-30 | 100.77 | 102.81 | -0.76 | FIX ahead |
| 2024-12-27 | 101.24 | 103.47 | -0.79 | FIX ahead |
| 2024-12-26 | 102.83 | 105.10 | -0.79 | FIX ahead |
| 2024-12-24 | 102.15 | 104.62 | -0.82 | FIX ahead |
| 2024-12-23 | 102.10 | 104.18 | -0.75 | FIX ahead |
| 2024-12-20 | 102.66 | 105.01 | -0.79 | FIX ahead |
| 2024-12-19 | 102.33 | 104.23 | -0.71 | FIX ahead |
| 2024-12-18 | 102.35 | 103.73 | -0.62 | FIX ahead |
| 2024-12-17 | 105.10 | 108.84 | -1.02 | FIX ahead |
| 2024-12-16 | 106.79 | 110.88 | -1.08 | FIX ahead |
| 2024-12-13 | 105.63 | 110.73 | -1.26 | FIX ahead |
| 2024-12-12 | 105.84 | 112.34 | -1.51 | FIX ahead |
| 2024-12-11 | 106.00 | 113.11 | -1.62 | FIX ahead |
| 2024-12-10 | 104.53 | 109.98 | -1.36 | FIX ahead |
| 2024-12-09 | 105.48 | 110.82 | -1.35 | FIX ahead |
| 2024-12-06 | 112.19 | 119.03 | -1.55 | FIX ahead |
| 2024-12-05 | 113.17 | 119.06 | -1.40 | FIX ahead |
| 2024-12-04 | 113.44 | 119.98 | -1.52 | FIX ahead |
| 2024-12-03 | 112.31 | 118.73 | -1.52 | FIX ahead |
| 2024-12-02 | 111.32 | 117.24 | -1.46 | FIX ahead |
| 2024-11-29 | 112.43 | 118.14 | -1.42 | FIX ahead |
| 2024-11-27 | 111.95 | 116.55 | -1.25 | FIX ahead |
| 2024-11-26 | 113.45 | 120.74 | -1.70 | FIX ahead |
| 2024-11-25 | 112.62 | 118.57 | -1.49 | FIX ahead |
| 2024-11-22 | 111.28 | 117.61 | -1.58 | FIX ahead |
| 2024-11-21 | 116.13 | 117.35 | -0.69 | FIX ahead |
| 2024-11-20 | 113.68 | 114.06 | -0.55 | FIX ahead |
| 2024-11-19 | 113.28 | 113.63 | -0.55 | FIX ahead |
| 2024-11-18 | 110.38 | 108.01 | -0.05 | near the usual relationship |
| 2024-11-15 | 109.94 | 106.58 | +0.14 | near the usual relationship |
| 2024-11-14 | 109.78 | 105.24 | +0.37 | near the usual relationship |
| 2024-11-13 | 110.27 | 106.88 | +0.15 | near the usual relationship |
| 2024-11-12 | 113.30 | 110.89 | -0.05 | near the usual relationship |
| 2024-11-11 | 114.70 | 111.77 | +0.04 | near the usual relationship |
| 2024-11-08 | 113.31 | 110.66 | -0.01 | near the usual relationship |
| 2024-11-07 | 111.15 | 106.15 | +0.44 | near the usual relationship |
| 2024-11-06 | 110.61 | 104.73 | +0.61 | EME ahead |
| 2024-11-05 | 104.86 | 98.43 | +0.79 | EME ahead |
| 2024-11-04 | 101.71 | 93.50 | +1.22 | EME ahead |
| 2024-11-01 | 99.88 | 93.96 | +0.76 | EME ahead |
| 2024-10-31 | 98.31 | 93.65 | +0.51 | EME ahead |
| 2024-10-30 | 95.16 | 93.44 | -0.10 | near the usual relationship |
| 2024-10-29 | 96.26 | 94.88 | -0.18 | near the usual relationship |
| 2024-10-28 | 95.11 | 93.24 | -0.09 | near the usual relationship |
| 2024-10-25 | 94.45 | 88.73 | +0.73 | EME ahead |
| 2024-10-24 | 98.32 | 99.03 | -0.62 | FIX ahead |
| 2024-10-23 | 98.21 | 98.68 | -0.58 | FIX ahead |
| 2024-10-22 | 98.72 | 99.34 | -0.61 | FIX ahead |
| 2024-10-21 | 100.30 | 101.61 | -0.75 | FIX ahead |
| 2024-10-18 | 100.00 | 100.00 | -0.51 | FIX ahead |
One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Jan 27, 2025 (EME -19.1%, FIX -25.7%); Jul 25, 2025 (EME +9.7%, FIX +22.4%); Oct 24, 2025 (EME +7.5%, FIX +19.0%); Oct 30, 2025 (EME -16.6%, FIX -4.7%). Upcoming earnings: FIX Oct 22, 2026 (after-hours); EME Oct 29, 2026 (pre-market).
Paired trades
The shared paper book and the replay, kept apart
Forward paper record
No paper position on this pair yet.
Historical simulation (a diagnostic, same rules)
1 simulated trade to Oct 20, 2026: +10.16% per trade on average after costs, 1 won.
| Legs | Entered | Exited | Why | Days | Before costs | Costs + borrow | After costs |
|---|---|---|---|---|---|---|---|
| Long EME · Short FIX | Mar 7, 2023 | Jul 31, 2023 | converged | 146 | $1,133.50 | -$112.60 | $1,015.67 (+10.16%) |
Per $10,000 a leg. A replay on today's companies cannot prove an edge.
The companies
EME and FIX at a glance
EME EMCOR Group Inc.
- Listing
- NYSE · SEC CIK 105634
- Industry
- Engineering & Construction · SIC 1731 Electrical Work
- Market value
- $31.6B
- Price history
- 2,521 daily closes, Oct 12, 2016 to Oct 22, 2026
FIX Comfort Systems USA Inc.
- Listing
- NYSE · SEC CIK 1035983
- Industry
- Engineering & Construction · SIC 1731 Electrical Work
- Market value
- $51.5B
- Price history
- 2,521 daily closes, Oct 12, 2016 to Oct 22, 2026
Daily prices: Nasdaq.com. Filings and industry codes: SEC EDGAR. Earnings dates: Nasdaq earnings calendar.
Related
All pairs →Other rivals of EME and FIX
Follow the research behind the paper book
Boostio is a research-first platform in private beta: crypto candidates, daily market stories, public paper trading and now rival stocks. Exploring these pages stays free and open.
Explore the private betaPaper only: hypothetical paired positions with modelled costs. No broker, no orders, no real money. A historical simulation is a diagnostic, not proof of an edge. Not investment advice.
