Comfort Systems USA Inc. vs Quanta Services Inc.
WatchlistFIX / PWRPrices through Nov 10, 2026
Why these are rivals: #1 and #2 by market value ($99B vs $45B) in Nasdaq's "Engineering & Construction" industry; SEC SIC 1731 / 1731 (same major group); #1 and #2 by market value ($99B vs $45B) with SEC SIC 1731 (Electrical Work).
Rivals, but right now the price gap does not have a measured habit of closing, so there is no paper idea, whatever the gap.
- Mean reversion: ADF t-statistic of the spread: -0.37 (needs <= -2.873 (5% critical value))
Business leadership
PWR is the larger business
Annual revenue reported to the SEC. Scale, not market share.
| Year | FIX | PWR | Larger |
|---|---|---|---|
| 2025 | $1.8B | $28.5B | PWR |
| 2024 | $7.0B | $23.7B | PWR |
| 2023 | $5.2B | $20.9B | PWR |
| 2022 | $4.1B | $17.1B | PWR |
| 2021 | $3.1B | $13.0B | PWR |
| 2020 | $2.9B | $11.2B | PWR |
PWR led in every year with figures for both. Market value: FIX $45.0B, PWR $99.0B.
Stock leadership
PWR is ahead now
Measured against the pair's own last 252 trading days.
PWR leads FIX by 2.97 standard deviations: +30.1% over its usual price ratio. 1 lead switch in the last year.
| Price change | 3 mo | 6 mo | 12 mo |
|---|---|---|---|
| FIX | -36.4% | -45.2% | +15.8% |
| PWR | -14.0% | -23.9% | +31.0% |
Relationship
Not a measured twin today
Only these tests can make a pair tradable on paper.
- Pass
- Aligned sessions: 2534 (needs >= 254)
- Pass
- Co-movement: daily return correlation, 252 sessions: 0.86 (needs >= 0.60)
- Fail
- Mean reversion: ADF t-statistic of the spread: -0.37 (needs <= -2.873 (5% critical value))
- Pass
- Speed: half-life of the spread, sessions: 61.48 (needs <= 63)
- Data
- Both stocks current
The twins over two years
Prices side by side, and the gap between them
FIX Comfort Systems USA Inc. PWR Quanta Services Inc.Price index, 100 = 2024-11-06. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
Spread z-score: FIX relative to PWR, against the 252 sessions before each day. Above 0: FIX ahead; below 0: PWR ahead. Lines at +/-2 (idea) and +/-4 (stop).
Data table (504 sessions)
| Date | FIX index | PWR index | z | Ahead |
|---|---|---|---|---|
| 2026-11-10 | 252.91 | 187.61 | -2.97 | PWR ahead |
| 2026-11-09 | 254.58 | 190.30 | -3.10 | PWR ahead |
| 2026-11-06 | 232.69 | 174.02 | -3.16 | PWR ahead |
| 2026-11-05 | 220.67 | 163.78 | -3.13 | PWR ahead |
| 2026-11-04 | 249.57 | 186.74 | -3.28 | PWR ahead |
| 2026-11-03 | 293.89 | 211.38 | -2.84 | PWR ahead |
| 2026-11-02 | 274.46 | 199.85 | -3.03 | PWR ahead |
| 2026-10-30 | 281.89 | 199.71 | -2.73 | PWR ahead |
| 2026-10-29 | 303.29 | 204.36 | -2.13 | PWR ahead |
| 2026-10-28 | 307.76 | 195.25 | -1.37 | PWR ahead |
| 2026-10-27 | 294.69 | 186.23 | -1.33 | PWR ahead |
| 2026-10-26 | 284.53 | 181.43 | -1.41 | PWR ahead |
| 2026-10-23 | 265.47 | 175.80 | -1.85 | PWR ahead |
| 2026-10-22 | 292.57 | 177.74 | -0.78 | PWR ahead |
| 2026-10-21 | 320.45 | 193.40 | -0.68 | PWR ahead |
| 2026-10-20 | 319.50 | 191.75 | -0.59 | PWR ahead |
| 2026-10-19 | 334.81 | 198.96 | -0.46 | near the usual relationship |
| 2026-10-16 | 329.10 | 203.29 | -0.88 | PWR ahead |
| 2026-10-15 | 338.75 | 206.62 | -0.72 | PWR ahead |
| 2026-10-14 | 352.56 | 212.51 | -0.57 | PWR ahead |
| 2026-10-13 | 371.99 | 221.63 | -0.43 | near the usual relationship |
| 2026-10-12 | 374.60 | 223.53 | -0.44 | near the usual relationship |
| 2026-10-09 | 392.36 | 227.12 | -0.10 | near the usual relationship |
| 2026-10-08 | 390.23 | 220.49 | +0.16 | near the usual relationship |
| 2026-10-07 | 398.23 | 225.55 | +0.14 | near the usual relationship |
| 2026-10-06 | 415.74 | 231.50 | +0.32 | near the usual relationship |
| 2026-10-05 | 391.76 | 219.88 | +0.25 | near the usual relationship |
| 2026-10-02 | 395.17 | 217.67 | +0.44 | near the usual relationship |
| 2026-10-01 | 385.40 | 213.18 | +0.41 | near the usual relationship |
| 2026-09-30 | 378.27 | 206.71 | +0.53 | FIX ahead |
| 2026-09-29 | 380.77 | 209.70 | +0.47 | near the usual relationship |
| 2026-09-28 | 379.23 | 207.31 | +0.54 | FIX ahead |
| 2026-09-25 | 379.37 | 208.84 | +0.48 | near the usual relationship |
| 2026-09-24 | 375.82 | 207.03 | +0.48 | near the usual relationship |
| 2026-09-23 | 371.82 | 204.27 | +0.51 | FIX ahead |
| 2026-09-22 | 371.65 | 206.75 | +0.40 | near the usual relationship |
| 2026-09-21 | 373.35 | 206.75 | +0.45 | near the usual relationship |
| 2026-09-18 | 377.65 | 204.85 | +0.65 | FIX ahead |
| 2026-09-17 | 359.94 | 198.36 | +0.51 | FIX ahead |
| 2026-09-16 | 363.01 | 199.24 | +0.55 | FIX ahead |
| 2026-09-15 | 360.59 | 197.33 | +0.59 | FIX ahead |
| 2026-09-14 | 361.96 | 200.12 | +0.50 | FIX ahead |
| 2026-09-11 | 386.67 | 209.31 | +0.70 | FIX ahead |
| 2026-09-10 | 363.80 | 199.06 | +0.60 | FIX ahead |
| 2026-09-09 | 369.36 | 201.72 | +0.63 | FIX ahead |
| 2026-09-08 | 376.98 | 205.60 | +0.65 | FIX ahead |
| 2026-09-04 | 368.26 | 200.89 | +0.65 | FIX ahead |
| 2026-09-03 | 361.37 | 199.49 | +0.55 | FIX ahead |
| 2026-09-02 | 356.78 | 196.51 | +0.58 | FIX ahead |
| 2026-09-01 | 355.46 | 196.70 | +0.54 | FIX ahead |
| 2026-08-31 | 353.46 | 195.32 | +0.56 | FIX ahead |
| 2026-08-28 | 347.31 | 193.91 | +0.48 | near the usual relationship |
| 2026-08-27 | 369.32 | 200.06 | +0.74 | FIX ahead |
| 2026-08-26 | 369.49 | 198.42 | +0.82 | FIX ahead |
| 2026-08-25 | 357.20 | 194.25 | +0.72 | FIX ahead |
| 2026-08-24 | 368.11 | 198.44 | +0.80 | FIX ahead |
| 2026-08-21 | 378.62 | 205.69 | +0.74 | FIX ahead |
| 2026-08-20 | 382.58 | 213.14 | +0.54 | FIX ahead |
| 2026-08-19 | 387.87 | 217.94 | +0.48 | near the usual relationship |
| 2026-08-18 | 397.70 | 223.97 | +0.47 | near the usual relationship |
| 2026-08-17 | 430.20 | 232.39 | +0.80 | FIX ahead |
| 2026-08-14 | 405.70 | 220.64 | +0.75 | FIX ahead |
| 2026-08-13 | 395.09 | 216.45 | +0.70 | FIX ahead |
| 2026-08-12 | 397.64 | 218.14 | +0.70 | FIX ahead |
| 2026-08-11 | 386.03 | 215.75 | +0.56 | FIX ahead |
| 2026-08-10 | 383.01 | 212.62 | +0.62 | FIX ahead |
| 2026-08-07 | 387.52 | 216.16 | +0.59 | FIX ahead |
| 2026-08-06 | 391.88 | 214.86 | +0.72 | FIX ahead |
| 2026-08-05 | 397.23 | 219.74 | +0.66 | FIX ahead |
| 2026-08-04 | 406.12 | 222.96 | +0.72 | FIX ahead |
| 2026-08-03 | 404.99 | 218.84 | +0.85 | FIX ahead |
| 2026-07-31 | 395.56 | 214.71 | +0.82 | FIX ahead |
| 2026-07-30 | 388.27 | 211.69 | +0.79 | FIX ahead |
| 2026-07-29 | 347.59 | 180.54 | +1.14 | FIX ahead |
| 2026-07-28 | 371.92 | 189.29 | +1.29 | FIX ahead |
| 2026-07-27 | 395.72 | 199.56 | +1.35 | FIX ahead |
| 2026-07-24 | 396.45 | 201.35 | +1.29 | FIX ahead |
| 2026-07-23 | 418.76 | 210.35 | +1.35 | FIX ahead |
| 2026-07-22 | 409.59 | 206.92 | +1.31 | FIX ahead |
| 2026-07-21 | 405.58 | 205.65 | +1.28 | FIX ahead |
| 2026-07-20 | 391.55 | 203.51 | +1.12 | FIX ahead |
| 2026-07-17 | 382.83 | 202.22 | +1.02 | FIX ahead |
| 2026-07-16 | 384.33 | 203.02 | +1.02 | FIX ahead |
| 2026-07-15 | 397.16 | 208.75 | +1.05 | FIX ahead |
| 2026-07-14 | 405.94 | 212.64 | +1.07 | FIX ahead |
| 2026-07-13 | 396.09 | 208.06 | +1.06 | FIX ahead |
| 2026-07-10 | 401.59 | 211.88 | +1.03 | FIX ahead |
| 2026-07-09 | 407.39 | 214.97 | +1.04 | FIX ahead |
| 2026-07-08 | 385.32 | 214.38 | +0.74 | FIX ahead |
| 2026-07-07 | 384.98 | 211.31 | +0.82 | FIX ahead |
| 2026-07-06 | 410.04 | 216.86 | +1.03 | FIX ahead |
| 2026-07-02 | 398.21 | 215.02 | +0.92 | FIX ahead |
| 2026-07-01 | 426.53 | 222.44 | +1.11 | FIX ahead |
| 2026-06-30 | 453.25 | 231.66 | +1.22 | FIX ahead |
| 2026-06-29 | 445.64 | 229.86 | +1.18 | FIX ahead |
| 2026-06-26 | 424.04 | 221.31 | +1.12 | FIX ahead |
| 2026-06-25 | 461.39 | 231.19 | +1.34 | FIX ahead |
| 2026-06-24 | 446.96 | 225.82 | +1.30 | FIX ahead |
| 2026-06-23 | 436.35 | 225.95 | +1.18 | FIX ahead |
| 2026-06-22 | 472.58 | 238.12 | +1.32 | FIX ahead |
| 2026-06-18 | 449.92 | 225.93 | +1.34 | FIX ahead |
| 2026-06-17 | 441.77 | 229.99 | +1.17 | FIX ahead |
| 2026-06-16 | 437.69 | 231.42 | +1.09 | FIX ahead |
| 2026-06-15 | 446.40 | 233.04 | +1.16 | FIX ahead |
| 2026-06-12 | 429.38 | 227.70 | +1.09 | FIX ahead |
| 2026-06-11 | 421.57 | 219.83 | +1.18 | FIX ahead |
| 2026-06-10 | 393.22 | 209.42 | +1.08 | FIX ahead |
| 2026-06-09 | 418.85 | 222.62 | +1.10 | FIX ahead |
| 2026-06-08 | 423.53 | 223.22 | +1.15 | FIX ahead |
| 2026-06-05 | 421.68 | 223.64 | +1.12 | FIX ahead |
| 2026-06-04 | 437.85 | 231.38 | +1.15 | FIX ahead |
| 2026-06-03 | 423.08 | 230.25 | +1.01 | FIX ahead |
| 2026-06-02 | 430.68 | 227.16 | +1.17 | FIX ahead |
| 2026-06-01 | 408.86 | 221.18 | +1.06 | FIX ahead |
| 2026-05-29 | 418.09 | 228.98 | +1.00 | FIX ahead |
| 2026-05-28 | 424.25 | 234.89 | +0.96 | FIX ahead |
| 2026-05-27 | 426.98 | 236.03 | +0.97 | FIX ahead |
| 2026-05-26 | 430.74 | 238.78 | +0.97 | FIX ahead |
| 2026-05-22 | 418.10 | 232.75 | +0.95 | FIX ahead |
| 2026-05-21 | 419.72 | 230.65 | +1.02 | FIX ahead |
| 2026-05-20 | 419.76 | 228.41 | +1.07 | FIX ahead |
| 2026-05-19 | 417.47 | 229.76 | +1.03 | FIX ahead |
| 2026-05-18 | 424.08 | 232.62 | +1.05 | FIX ahead |
| 2026-05-15 | 455.71 | 247.73 | +1.10 | FIX ahead |
| 2026-05-14 | 467.06 | 250.97 | +1.16 | FIX ahead |
| 2026-05-13 | 465.29 | 248.93 | +1.18 | FIX ahead |
| 2026-05-12 | 461.10 | 246.38 | +1.20 | FIX ahead |
| 2026-05-11 | 464.91 | 251.39 | +1.15 | FIX ahead |
| 2026-05-08 | 446.48 | 239.69 | +1.19 | FIX ahead |
| 2026-05-07 | 444.11 | 241.53 | +1.14 | FIX ahead |
| 2026-05-06 | 460.00 | 252.63 | +1.10 | FIX ahead |
| 2026-05-05 | 449.88 | 248.25 | +1.09 | FIX ahead |
| 2026-05-04 | 432.66 | 243.66 | +1.01 | FIX ahead |
| 2026-05-01 | 426.96 | 238.79 | +1.05 | FIX ahead |
| 2026-04-30 | 420.84 | 234.15 | +1.08 | FIX ahead |
| 2026-04-29 | 394.29 | 202.24 | +1.44 | FIX ahead |
| 2026-04-28 | 393.16 | 202.99 | +1.42 | FIX ahead |
| 2026-04-27 | 410.27 | 205.03 | +1.57 | FIX ahead |
| 2026-04-24 | 394.74 | 201.03 | +1.50 | FIX ahead |
| 2026-04-23 | 405.67 | 203.80 | +1.57 | FIX ahead |
| 2026-04-22 | 394.37 | 197.47 | +1.60 | FIX ahead |
| 2026-04-21 | 382.86 | 194.93 | +1.54 | FIX ahead |
| 2026-04-20 | 384.21 | 194.64 | +1.57 | FIX ahead |
| 2026-04-17 | 377.44 | 193.64 | +1.53 | FIX ahead |
| 2026-04-16 | 367.26 | 188.99 | +1.52 | FIX ahead |
| 2026-04-15 | 377.09 | 190.41 | +1.62 | FIX ahead |
| 2026-04-14 | 377.44 | 191.24 | +1.62 | FIX ahead |
| 2026-04-13 | 372.26 | 191.70 | +1.56 | FIX ahead |
| 2026-04-10 | 364.26 | 188.33 | +1.55 | FIX ahead |
| 2026-04-09 | 360.06 | 187.27 | +1.54 | FIX ahead |
| 2026-04-08 | 348.78 | 185.39 | +1.46 | FIX ahead |
| 2026-04-07 | 325.86 | 178.74 | +1.33 | FIX ahead |
| 2026-04-06 | 327.96 | 178.36 | +1.38 | FIX ahead |
| 2026-04-02 | 324.09 | 180.37 | +1.29 | FIX ahead |
| 2026-04-01 | 326.68 | 180.21 | +1.34 | FIX ahead |
| 2026-03-31 | 315.36 | 176.64 | +1.28 | FIX ahead |
| 2026-03-30 | 291.16 | 171.73 | +1.07 | FIX ahead |
| 2026-03-27 | 312.56 | 176.94 | +1.25 | FIX ahead |
| 2026-03-26 | 310.71 | 175.55 | +1.27 | FIX ahead |
| 2026-03-25 | 336.32 | 184.51 | +1.41 | FIX ahead |
| 2026-03-24 | 334.23 | 186.10 | +1.35 | FIX ahead |
| 2026-03-23 | 322.05 | 182.57 | +1.29 | FIX ahead |
| 2026-03-20 | 310.27 | 178.69 | +1.23 | FIX ahead |
| 2026-03-19 | 330.36 | 185.94 | +1.34 | FIX ahead |
| 2026-03-18 | 325.42 | 184.03 | +1.33 | FIX ahead |
| 2026-03-17 | 325.75 | 183.91 | +1.35 | FIX ahead |
| 2026-03-16 | 323.39 | 184.68 | +1.31 | FIX ahead |
| 2026-03-13 | 312.23 | 179.85 | +1.28 | FIX ahead |
| 2026-03-12 | 314.16 | 182.39 | +1.26 | FIX ahead |
| 2026-03-11 | 321.83 | 182.65 | +1.37 | FIX ahead |
| 2026-03-10 | 316.42 | 181.47 | +1.33 | FIX ahead |
| 2026-03-09 | 313.85 | 182.76 | +1.28 | FIX ahead |
| 2026-03-06 | 292.50 | 173.80 | +1.20 | FIX ahead |
| 2026-03-05 | 308.32 | 176.70 | +1.37 | FIX ahead |
| 2026-03-04 | 327.11 | 182.86 | +1.49 | FIX ahead |
| 2026-03-03 | 318.14 | 182.10 | +1.40 | FIX ahead |
| 2026-03-02 | 328.91 | 184.24 | +1.50 | FIX ahead |
| 2026-02-27 | 326.88 | 181.16 | +1.56 | FIX ahead |
| 2026-02-26 | 328.90 | 181.79 | +1.59 | FIX ahead |
| 2026-02-25 | 331.73 | 181.06 | +1.66 | FIX ahead |
| 2026-02-24 | 335.84 | 182.81 | +1.69 | FIX ahead |
| 2026-02-23 | 323.26 | 176.66 | +1.69 | FIX ahead |
| 2026-02-20 | 334.39 | 177.81 | +1.82 | FIX ahead |
| 2026-02-19 | 314.11 | 178.24 | +1.56 | FIX ahead |
| 2026-02-18 | 301.74 | 167.08 | +1.68 | FIX ahead |
| 2026-02-17 | 305.93 | 168.95 | +1.71 | FIX ahead |
| 2026-02-13 | 305.97 | 168.61 | +1.73 | FIX ahead |
| 2026-02-12 | 297.30 | 165.97 | +1.69 | FIX ahead |
| 2026-02-11 | 306.13 | 168.57 | +1.77 | FIX ahead |
| 2026-02-10 | 290.35 | 164.29 | +1.67 | FIX ahead |
| 2026-02-09 | 293.55 | 165.55 | +1.70 | FIX ahead |
| 2026-02-06 | 281.34 | 163.47 | +1.59 | FIX ahead |
| 2026-02-05 | 262.53 | 153.70 | +1.57 | FIX ahead |
| 2026-02-04 | 256.09 | 149.47 | +1.60 | FIX ahead |
| 2026-02-03 | 276.70 | 157.20 | +1.74 | FIX ahead |
| 2026-02-02 | 268.99 | 153.71 | +1.73 | FIX ahead |
| 2026-01-30 | 261.18 | 152.70 | +1.64 | FIX ahead |
| 2026-01-29 | 267.90 | 155.53 | +1.69 | FIX ahead |
| 2026-01-28 | 267.35 | 154.84 | +1.72 | FIX ahead |
| 2026-01-27 | 265.36 | 154.20 | +1.72 | FIX ahead |
| 2026-01-26 | 257.86 | 151.46 | +1.69 | FIX ahead |
| 2026-01-23 | 256.46 | 150.81 | +1.70 | FIX ahead |
| 2026-01-22 | 258.80 | 150.82 | +1.76 | FIX ahead |
| 2026-01-21 | 262.53 | 152.26 | +1.80 | FIX ahead |
| 2026-01-20 | 259.50 | 149.12 | +1.87 | FIX ahead |
| 2026-01-16 | 256.12 | 150.17 | +1.79 | FIX ahead |
| 2026-01-15 | 249.51 | 144.02 | +1.89 | FIX ahead |
| 2026-01-14 | 240.83 | 140.62 | +1.85 | FIX ahead |
| 2026-01-13 | 245.41 | 142.91 | +1.89 | FIX ahead |
| 2026-01-12 | 237.42 | 139.20 | +1.87 | FIX ahead |
| 2026-01-09 | 231.07 | 135.95 | +1.88 | FIX ahead |
| 2026-01-08 | 222.17 | 132.93 | +1.81 | FIX ahead |
| 2026-01-07 | 236.72 | 140.56 | +1.87 | FIX ahead |
| 2026-01-06 | 236.72 | 140.99 | +1.88 | FIX ahead |
| 2026-01-05 | 236.08 | 140.22 | +1.92 | FIX ahead |
| 2026-01-02 | 229.52 | 141.46 | +1.75 | FIX ahead |
| 2025-12-31 | 213.43 | 135.79 | +1.60 | FIX ahead |
| 2025-12-30 | 216.55 | 137.96 | +1.61 | FIX ahead |
| 2025-12-29 | 217.41 | 138.68 | +1.62 | FIX ahead |
| 2025-12-26 | 220.41 | 139.20 | +1.69 | FIX ahead |
| 2025-12-24 | 219.10 | 139.50 | +1.66 | FIX ahead |
| 2025-12-23 | 220.77 | 140.02 | +1.70 | FIX ahead |
| 2025-12-22 | 217.43 | 139.32 | +1.66 | FIX ahead |
| 2025-12-19 | 215.13 | 137.27 | +1.70 | FIX ahead |
| 2025-12-18 | 210.06 | 135.55 | +1.66 | FIX ahead |
| 2025-12-17 | 202.11 | 133.28 | +1.56 | FIX ahead |
| 2025-12-16 | 221.48 | 141.08 | +1.76 | FIX ahead |
| 2025-12-15 | 221.48 | 140.23 | +1.81 | FIX ahead |
| 2025-12-12 | 221.36 | 140.95 | +1.80 | FIX ahead |
| 2025-12-11 | 234.39 | 150.22 | +1.79 | FIX ahead |
| 2025-12-10 | 233.57 | 148.71 | +1.84 | FIX ahead |
| 2025-12-09 | 224.94 | 147.34 | +1.70 | FIX ahead |
| 2025-12-08 | 226.28 | 148.99 | +1.69 | FIX ahead |
| 2025-12-05 | 229.02 | 148.20 | +1.81 | FIX ahead |
| 2025-12-04 | 229.75 | 149.55 | +1.80 | FIX ahead |
| 2025-12-03 | 217.09 | 146.72 | +1.60 | FIX ahead |
| 2025-12-02 | 214.00 | 146.30 | +1.55 | FIX ahead |
| 2025-12-01 | 219.81 | 145.50 | +1.75 | FIX ahead |
| 2025-11-28 | 223.41 | 149.57 | +1.71 | FIX ahead |
| 2025-11-26 | 222.04 | 148.13 | +1.74 | FIX ahead |
| 2025-11-25 | 218.86 | 144.82 | +1.81 | FIX ahead |
| 2025-11-24 | 216.12 | 142.41 | +1.86 | FIX ahead |
| 2025-11-21 | 204.46 | 138.39 | +1.72 | FIX ahead |
| 2025-11-20 | 200.37 | 138.27 | +1.62 | FIX ahead |
| 2025-11-19 | 212.79 | 143.32 | +1.78 | FIX ahead |
| 2025-11-18 | 210.62 | 141.33 | +1.82 | FIX ahead |
| 2025-11-17 | 210.35 | 137.34 | +2.01 | FIX ahead |
| 2025-11-14 | 208.01 | 138.12 | +1.93 | FIX ahead |
| 2025-11-13 | 205.25 | 137.36 | +1.91 | FIX ahead |
| 2025-11-12 | 222.55 | 144.59 | +2.11 | FIX ahead |
| 2025-11-11 | 218.29 | 144.43 | +2.03 | FIX ahead |
| 2025-11-10 | 222.77 | 144.90 | +2.16 | FIX ahead |
| 2025-11-07 | 218.45 | 143.17 | +2.14 | FIX ahead |
| 2025-11-06 | 219.03 | 142.49 | +2.22 | FIX ahead |
| 2025-11-05 | 225.89 | 145.89 | +2.30 | FIX ahead |
| 2025-11-04 | 218.62 | 141.13 | +2.33 | FIX ahead |
| 2025-11-03 | 223.58 | 145.04 | +2.33 | FIX ahead |
| 2025-10-31 | 220.82 | 144.50 | +2.31 | FIX ahead |
| 2025-10-30 | 220.29 | 146.01 | +2.26 | FIX ahead |
| 2025-10-29 | 231.12 | 144.36 | +2.69 | FIX ahead |
| 2025-10-28 | 224.33 | 141.42 | +2.67 | FIX ahead |
| 2025-10-27 | 223.30 | 142.15 | +2.66 | FIX ahead |
| 2025-10-24 | 224.49 | 141.86 | +2.76 | FIX ahead |
| 2025-10-23 | 188.67 | 137.49 | +1.80 | FIX ahead |
| 2025-10-22 | 180.83 | 132.62 | +1.78 | FIX ahead |
| 2025-10-21 | 189.66 | 140.73 | +1.71 | FIX ahead |
| 2025-10-20 | 191.35 | 141.80 | +1.74 | FIX ahead |
| 2025-10-17 | 189.33 | 139.58 | +1.80 | FIX ahead |
| 2025-10-16 | 191.82 | 140.76 | +1.85 | FIX ahead |
| 2025-10-15 | 191.44 | 140.57 | +1.87 | FIX ahead |
| 2025-10-14 | 190.24 | 138.86 | +1.93 | FIX ahead |
| 2025-10-13 | 193.47 | 138.66 | +2.09 | FIX ahead |
| 2025-10-10 | 186.62 | 134.36 | +2.08 | FIX ahead |
| 2025-10-09 | 190.88 | 138.32 | +2.06 | FIX ahead |
| 2025-10-08 | 193.15 | 142.67 | +1.95 | FIX ahead |
| 2025-10-07 | 186.73 | 135.61 | +2.10 | FIX ahead |
| 2025-10-06 | 188.76 | 137.64 | +2.09 | FIX ahead |
| 2025-10-03 | 187.07 | 135.50 | +2.17 | FIX ahead |
| 2025-10-02 | 190.49 | 135.40 | +2.35 | FIX ahead |
| 2025-10-01 | 190.80 | 135.34 | +2.40 | FIX ahead |
| 2025-09-30 | 188.71 | 133.33 | +2.47 | FIX ahead |
| 2025-09-29 | 183.36 | 131.62 | +2.38 | FIX ahead |
| 2025-09-26 | 183.95 | 130.44 | +2.52 | FIX ahead |
| 2025-09-25 | 178.81 | 128.82 | +2.43 | FIX ahead |
| 2025-09-24 | 181.00 | 129.62 | +2.52 | FIX ahead |
| 2025-09-23 | 183.92 | 125.32 | +2.99 | FIX ahead |
| 2025-09-22 | 187.89 | 127.41 | +3.10 | FIX ahead |
| 2025-09-19 | 182.43 | 125.02 | +3.08 | FIX ahead |
| 2025-09-18 | 182.81 | 125.68 | +3.12 | FIX ahead |
| 2025-09-17 | 174.47 | 120.97 | +3.11 | FIX ahead |
| 2025-09-16 | 177.73 | 121.69 | +3.30 | FIX ahead |
| 2025-09-15 | 178.84 | 124.08 | +3.26 | FIX ahead |
| 2025-09-12 | 172.36 | 123.07 | +3.06 | FIX ahead |
| 2025-09-11 | 174.92 | 125.36 | +3.09 | FIX ahead |
| 2025-09-10 | 172.00 | 125.53 | +2.98 | FIX ahead |
| 2025-09-09 | 162.26 | 120.16 | +2.89 | FIX ahead |
| 2025-09-08 | 163.71 | 120.82 | +2.98 | FIX ahead |
| 2025-09-05 | 161.52 | 119.84 | +2.99 | FIX ahead |
| 2025-09-04 | 165.56 | 121.00 | +3.21 | FIX ahead |
| 2025-09-03 | 160.24 | 120.46 | +2.99 | FIX ahead |
| 2025-09-02 | 159.76 | 120.55 | +3.01 | FIX ahead |
| 2025-08-29 | 160.85 | 121.60 | +3.06 | FIX ahead |
| 2025-08-28 | 166.94 | 124.17 | +3.31 | FIX ahead |
| 2025-08-27 | 162.33 | 122.76 | +3.20 | FIX ahead |
| 2025-08-26 | 161.77 | 123.52 | +3.16 | FIX ahead |
| 2025-08-25 | 158.06 | 121.71 | +3.14 | FIX ahead |
| 2025-08-22 | 157.67 | 122.21 | +3.13 | FIX ahead |
| 2025-08-21 | 158.71 | 121.68 | +3.33 | FIX ahead |
| 2025-08-20 | 155.75 | 120.93 | +3.26 | FIX ahead |
| 2025-08-19 | 156.41 | 122.02 | +3.28 | FIX ahead |
| 2025-08-18 | 159.11 | 123.33 | +3.45 | FIX ahead |
| 2025-08-15 | 155.70 | 122.52 | +3.33 | FIX ahead |
| 2025-08-14 | 157.76 | 121.46 | +3.71 | FIX ahead |
| 2025-08-13 | 160.56 | 122.24 | +3.97 | FIX ahead |
| 2025-08-12 | 164.34 | 125.98 | +4.00 | FIX ahead |
| 2025-08-11 | 158.55 | 123.58 | +3.89 | FIX ahead |
| 2025-08-08 | 158.20 | 124.24 | +3.90 | FIX ahead |
| 2025-08-07 | 158.81 | 124.62 | +4.05 | FIX ahead |
| 2025-08-06 | 157.90 | 124.67 | +4.10 | FIX ahead |
| 2025-08-05 | 158.13 | 125.19 | +4.21 | FIX ahead |
| 2025-08-04 | 159.89 | 126.64 | +4.37 | FIX ahead |
| 2025-08-01 | 159.01 | 127.14 | +4.37 | FIX ahead |
| 2025-07-31 | 160.84 | 130.66 | +4.25 | FIX ahead |
| 2025-07-30 | 160.76 | 132.27 | +4.16 | FIX ahead |
| 2025-07-29 | 157.26 | 132.23 | +3.86 | FIX ahead |
| 2025-07-28 | 158.47 | 132.55 | +4.07 | FIX ahead |
| 2025-07-25 | 157.51 | 135.67 | +3.63 | FIX ahead |
| 2025-07-24 | 128.71 | 131.01 | +0.50 | FIX ahead |
| 2025-07-23 | 125.30 | 130.34 | +0.11 | near the usual relationship |
| 2025-07-22 | 121.69 | 127.06 | +0.05 | near the usual relationship |
| 2025-07-21 | 124.62 | 128.26 | +0.32 | near the usual relationship |
| 2025-07-18 | 126.73 | 129.76 | +0.42 | near the usual relationship |
| 2025-07-17 | 125.89 | 128.02 | +0.54 | FIX ahead |
| 2025-07-16 | 125.01 | 125.19 | +0.82 | FIX ahead |
| 2025-07-15 | 123.27 | 124.36 | +0.70 | FIX ahead |
| 2025-07-14 | 124.17 | 124.51 | +0.81 | FIX ahead |
| 2025-07-11 | 123.38 | 123.47 | +0.85 | FIX ahead |
| 2025-07-10 | 122.07 | 122.29 | +0.84 | FIX ahead |
| 2025-07-09 | 122.35 | 122.94 | +0.79 | FIX ahead |
| 2025-07-08 | 120.61 | 121.47 | +0.76 | FIX ahead |
| 2025-07-07 | 123.83 | 124.12 | +0.85 | FIX ahead |
| 2025-07-03 | 123.71 | 124.35 | +0.81 | FIX ahead |
| 2025-07-02 | 121.18 | 120.14 | +1.04 | FIX ahead |
| 2025-07-01 | 119.30 | 119.78 | +0.84 | FIX ahead |
| 2025-06-30 | 122.62 | 121.64 | +1.04 | FIX ahead |
| 2025-06-27 | 122.35 | 122.66 | +0.87 | FIX ahead |
| 2025-06-26 | 118.02 | 122.09 | +0.36 | near the usual relationship |
| 2025-06-25 | 116.08 | 120.35 | +0.34 | near the usual relationship |
| 2025-06-24 | 117.39 | 119.77 | +0.60 | FIX ahead |
| 2025-06-23 | 115.02 | 117.68 | +0.56 | FIX ahead |
| 2025-06-20 | 114.35 | 116.07 | +0.69 | FIX ahead |
| 2025-06-18 | 114.12 | 115.96 | +0.68 | FIX ahead |
| 2025-06-17 | 113.28 | 115.38 | +0.65 | FIX ahead |
| 2025-06-16 | 114.55 | 116.40 | +0.69 | FIX ahead |
| 2025-06-13 | 112.68 | 115.26 | +0.60 | FIX ahead |
| 2025-06-12 | 114.63 | 115.39 | +0.84 | FIX ahead |
| 2025-06-11 | 113.59 | 114.46 | +0.83 | FIX ahead |
| 2025-06-10 | 111.53 | 112.21 | +0.86 | FIX ahead |
| 2025-06-09 | 114.65 | 114.43 | +0.99 | FIX ahead |
| 2025-06-06 | 116.75 | 116.26 | +1.02 | FIX ahead |
| 2025-06-05 | 114.14 | 115.69 | +0.77 | FIX ahead |
| 2025-06-04 | 114.03 | 115.54 | +0.78 | FIX ahead |
| 2025-06-03 | 113.61 | 114.69 | +0.84 | FIX ahead |
| 2025-06-02 | 109.10 | 111.17 | +0.72 | FIX ahead |
| 2025-05-30 | 109.36 | 110.21 | +0.88 | FIX ahead |
| 2025-05-29 | 109.50 | 109.30 | +1.03 | FIX ahead |
| 2025-05-28 | 109.07 | 109.49 | +0.95 | FIX ahead |
| 2025-05-27 | 111.00 | 110.14 | +1.13 | FIX ahead |
| 2025-05-23 | 107.83 | 107.90 | +1.02 | FIX ahead |
| 2025-05-22 | 105.71 | 106.44 | +0.93 | FIX ahead |
| 2025-05-21 | 106.40 | 109.78 | +0.59 | FIX ahead |
| 2025-05-20 | 108.07 | 110.98 | +0.66 | FIX ahead |
| 2025-05-19 | 107.54 | 110.90 | +0.61 | FIX ahead |
| 2025-05-16 | 107.93 | 110.93 | +0.66 | FIX ahead |
| 2025-05-15 | 105.97 | 109.51 | +0.59 | FIX ahead |
| 2025-05-14 | 106.91 | 110.40 | +0.60 | FIX ahead |
| 2025-05-13 | 106.39 | 110.54 | +0.52 | FIX ahead |
| 2025-05-12 | 103.33 | 107.07 | +0.56 | FIX ahead |
| 2025-05-09 | 99.45 | 104.85 | +0.31 | near the usual relationship |
| 2025-05-08 | 100.43 | 104.96 | +0.44 | near the usual relationship |
| 2025-05-07 | 98.83 | 104.11 | +0.33 | near the usual relationship |
| 2025-05-06 | 98.10 | 102.20 | +0.50 | FIX ahead |
| 2025-05-05 | 99.54 | 103.80 | +0.49 | near the usual relationship |
| 2025-05-02 | 98.82 | 103.32 | +0.46 | near the usual relationship |
| 2025-05-01 | 95.60 | 103.57 | -0.04 | near the usual relationship |
| 2025-04-30 | 90.91 | 94.17 | +0.60 | FIX ahead |
| 2025-04-29 | 90.91 | 94.07 | +0.62 | FIX ahead |
| 2025-04-28 | 90.19 | 93.50 | +0.60 | FIX ahead |
| 2025-04-25 | 90.89 | 92.45 | +0.87 | FIX ahead |
| 2025-04-24 | 86.03 | 90.77 | +0.37 | near the usual relationship |
| 2025-04-23 | 81.34 | 88.25 | -0.02 | near the usual relationship |
| 2025-04-22 | 77.83 | 84.24 | +0.02 | near the usual relationship |
| 2025-04-21 | 75.05 | 81.65 | -0.05 | near the usual relationship |
| 2025-04-17 | 79.57 | 85.97 | +0.05 | near the usual relationship |
| 2025-04-16 | 79.85 | 86.69 | -0.02 | near the usual relationship |
| 2025-04-15 | 81.46 | 87.84 | +0.08 | near the usual relationship |
| 2025-04-14 | 80.41 | 88.25 | -0.16 | near the usual relationship |
| 2025-04-11 | 79.76 | 86.73 | -0.02 | near the usual relationship |
| 2025-04-10 | 77.16 | 84.52 | -0.12 | near the usual relationship |
| 2025-04-09 | 81.59 | 86.74 | +0.29 | near the usual relationship |
| 2025-04-08 | 71.40 | 78.84 | -0.23 | near the usual relationship |
| 2025-04-07 | 71.38 | 78.89 | -0.23 | near the usual relationship |
| 2025-04-04 | 67.81 | 77.04 | -0.61 | PWR ahead |
| 2025-04-03 | 71.21 | 81.09 | -0.64 | PWR ahead |
| 2025-04-02 | 78.27 | 85.13 | -0.01 | near the usual relationship |
| 2025-04-01 | 75.47 | 82.97 | -0.16 | near the usual relationship |
| 2025-03-31 | 73.71 | 81.78 | -0.28 | near the usual relationship |
| 2025-03-28 | 74.12 | 81.81 | -0.21 | near the usual relationship |
| 2025-03-27 | 75.99 | 82.00 | +0.10 | near the usual relationship |
| 2025-03-26 | 79.04 | 83.86 | +0.34 | near the usual relationship |
| 2025-03-25 | 85.31 | 88.88 | +0.59 | FIX ahead |
| 2025-03-24 | 86.73 | 89.57 | +0.71 | FIX ahead |
| 2025-03-21 | 80.53 | 86.29 | +0.21 | near the usual relationship |
| 2025-03-20 | 81.59 | 87.22 | +0.25 | near the usual relationship |
| 2025-03-19 | 81.76 | 87.00 | +0.31 | near the usual relationship |
| 2025-03-18 | 77.59 | 84.73 | -0.04 | near the usual relationship |
| 2025-03-17 | 79.21 | 86.03 | +0.04 | near the usual relationship |
| 2025-03-14 | 78.01 | 83.91 | +0.17 | near the usual relationship |
| 2025-03-13 | 74.84 | 80.53 | +0.17 | near the usual relationship |
| 2025-03-12 | 76.82 | 80.14 | +0.59 | FIX ahead |
| 2025-03-11 | 74.23 | 79.16 | +0.30 | near the usual relationship |
| 2025-03-10 | 71.64 | 76.16 | +0.34 | near the usual relationship |
| 2025-03-07 | 74.15 | 79.15 | +0.28 | near the usual relationship |
| 2025-03-06 | 75.03 | 77.50 | +0.73 | FIX ahead |
| 2025-03-05 | 79.74 | 81.45 | +0.89 | FIX ahead |
| 2025-03-04 | 77.56 | 80.31 | +0.71 | FIX ahead |
| 2025-03-03 | 79.03 | 80.73 | +0.90 | FIX ahead |
| 2025-02-28 | 83.09 | 83.53 | +1.13 | FIX ahead |
| 2025-02-27 | 81.56 | 83.41 | +0.90 | FIX ahead |
| 2025-02-26 | 85.71 | 86.48 | +1.09 | FIX ahead |
| 2025-02-25 | 84.06 | 85.06 | +1.06 | FIX ahead |
| 2025-02-24 | 81.99 | 83.44 | +0.99 | FIX ahead |
| 2025-02-21 | 83.24 | 86.66 | +0.69 | FIX ahead |
| 2025-02-20 | 87.39 | 90.46 | +0.77 | FIX ahead |
| 2025-02-19 | 90.53 | 93.97 | +0.74 | FIX ahead |
| 2025-02-18 | 90.24 | 92.53 | +0.91 | FIX ahead |
| 2025-02-14 | 89.47 | 91.84 | +0.90 | FIX ahead |
| 2025-02-13 | 90.34 | 93.58 | +0.79 | FIX ahead |
| 2025-02-12 | 91.09 | 95.98 | +0.57 | FIX ahead |
| 2025-02-11 | 99.39 | 97.42 | +1.54 | FIX ahead |
| 2025-02-10 | 106.32 | 99.95 | +2.11 | FIX ahead |
| 2025-02-07 | 105.21 | 100.46 | +1.92 | FIX ahead |
| 2025-02-06 | 107.43 | 100.08 | +2.27 | FIX ahead |
| 2025-02-05 | 101.83 | 96.12 | +2.12 | FIX ahead |
| 2025-02-04 | 97.21 | 96.51 | +1.45 | FIX ahead |
| 2025-02-03 | 97.66 | 97.10 | +1.44 | FIX ahead |
| 2025-01-31 | 99.88 | 98.97 | +1.50 | FIX ahead |
| 2025-01-30 | 99.22 | 99.51 | +1.35 | FIX ahead |
| 2025-01-29 | 97.51 | 95.81 | +1.63 | FIX ahead |
| 2025-01-28 | 95.17 | 94.58 | +1.48 | FIX ahead |
| 2025-01-27 | 92.44 | 94.08 | +1.17 | FIX ahead |
| 2025-01-24 | 124.44 | 115.19 | +2.42 | FIX ahead |
| 2025-01-23 | 125.16 | 114.13 | +2.63 | FIX ahead |
| 2025-01-22 | 125.84 | 114.96 | +2.62 | FIX ahead |
| 2025-01-21 | 121.03 | 115.18 | +2.10 | FIX ahead |
| 2025-01-17 | 115.21 | 108.57 | +2.23 | FIX ahead |
| 2025-01-16 | 115.52 | 108.16 | +2.33 | FIX ahead |
| 2025-01-15 | 112.95 | 105.98 | +2.31 | FIX ahead |
| 2025-01-14 | 106.67 | 102.92 | +1.96 | FIX ahead |
| 2025-01-13 | 100.43 | 101.10 | +1.43 | FIX ahead |
| 2025-01-10 | 100.63 | 100.86 | +1.48 | FIX ahead |
| 2025-01-08 | 102.97 | 100.44 | +1.81 | FIX ahead |
| 2025-01-07 | 103.54 | 102.89 | +1.59 | FIX ahead |
| 2025-01-06 | 104.29 | 105.55 | +1.37 | FIX ahead |
| 2025-01-03 | 102.58 | 105.05 | +1.23 | FIX ahead |
| 2025-01-02 | 97.99 | 101.51 | +1.10 | FIX ahead |
| 2024-12-31 | 96.98 | 101.68 | +0.96 | FIX ahead |
| 2024-12-30 | 98.17 | 102.63 | +0.99 | FIX ahead |
| 2024-12-27 | 98.80 | 103.96 | +0.92 | FIX ahead |
| 2024-12-26 | 100.36 | 106.37 | +0.84 | FIX ahead |
| 2024-12-24 | 99.90 | 106.43 | +0.79 | FIX ahead |
| 2024-12-23 | 99.48 | 105.33 | +0.86 | FIX ahead |
| 2024-12-20 | 100.27 | 105.66 | +0.92 | FIX ahead |
| 2024-12-19 | 99.53 | 103.79 | +1.03 | FIX ahead |
| 2024-12-18 | 99.05 | 103.15 | +1.05 | FIX ahead |
| 2024-12-17 | 103.93 | 108.24 | +1.05 | FIX ahead |
| 2024-12-16 | 105.88 | 110.19 | +1.06 | FIX ahead |
| 2024-12-13 | 105.73 | 108.62 | +1.19 | FIX ahead |
| 2024-12-12 | 107.27 | 108.13 | +1.39 | FIX ahead |
| 2024-12-11 | 108.00 | 107.54 | +1.52 | FIX ahead |
| 2024-12-10 | 105.01 | 102.92 | +1.68 | FIX ahead |
| 2024-12-09 | 105.82 | 103.59 | +1.70 | FIX ahead |
| 2024-12-06 | 113.66 | 106.97 | +2.11 | FIX ahead |
| 2024-12-05 | 113.69 | 107.77 | +2.06 | FIX ahead |
| 2024-12-04 | 114.57 | 107.35 | +2.19 | FIX ahead |
| 2024-12-03 | 113.37 | 109.30 | +1.93 | FIX ahead |
| 2024-12-02 | 111.95 | 110.14 | +1.74 | FIX ahead |
| 2024-11-29 | 112.80 | 110.84 | +1.77 | FIX ahead |
| 2024-11-27 | 111.29 | 110.66 | +1.67 | FIX ahead |
| 2024-11-26 | 115.29 | 111.51 | +1.97 | FIX ahead |
| 2024-11-25 | 113.22 | 110.33 | +1.91 | FIX ahead |
| 2024-11-22 | 112.30 | 110.01 | +1.88 | FIX ahead |
| 2024-11-21 | 112.05 | 109.39 | +1.94 | FIX ahead |
| 2024-11-20 | 108.91 | 106.92 | +1.90 | FIX ahead |
| 2024-11-19 | 108.50 | 106.42 | +1.93 | FIX ahead |
| 2024-11-18 | 103.14 | 105.66 | +1.50 | FIX ahead |
| 2024-11-15 | 101.77 | 104.02 | +1.54 | FIX ahead |
| 2024-11-14 | 100.49 | 104.20 | +1.40 | FIX ahead |
| 2024-11-13 | 102.06 | 105.17 | +1.48 | FIX ahead |
| 2024-11-12 | 105.89 | 105.29 | +1.87 | FIX ahead |
| 2024-11-11 | 106.73 | 106.07 | +1.90 | FIX ahead |
| 2024-11-08 | 105.67 | 106.49 | +1.77 | FIX ahead |
| 2024-11-07 | 101.36 | 103.23 | +1.68 | FIX ahead |
| 2024-11-06 | 100.00 | 100.00 | +1.89 | FIX ahead |
One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Jan 27, 2025 (FIX -25.7%, PWR -18.3%); Jul 25, 2025 (FIX +22.4%, PWR +3.5%); Oct 24, 2025 (FIX +19.0%, PWR +3.2%); Oct 23, 2026 (FIX -9.3%, PWR -1.1%).
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)
2 simulated trades to Nov 3, 2026: +7.44% per trade on average after costs, 1 won.
| Legs | Entered | Exited | Why | Days | Before costs | Costs + borrow | After costs |
|---|---|---|---|---|---|---|---|
| Long PWR · Short FIX | Sep 14, 2023 | Oct 30, 2023 | divergence stop | 46 | -$1,167.68 | -$66.36 | -$1,238.35 (-12.38%) |
| Long FIX · Short PWR | Apr 16, 2020 | Aug 3, 2020 | converged | 109 | $2,831.28 | -$114.95 | $2,727.15 (+27.27%) |
Per $10,000 a leg. A replay on today's companies cannot prove an edge.
The companies
FIX and PWR at a glance
FIX Comfort Systems USA Inc.
- Listing
- NYSE · SEC CIK 1035983
- Industry
- Engineering & Construction · SIC 1731 Electrical Work
- Market value
- $45.0B
- Price history
- 2,534 daily closes, Oct 12, 2016 to Nov 10, 2026
PWR Quanta Services Inc.
- Listing
- NYSE · SEC CIK 1050915
- Industry
- Engineering & Construction · SIC 1731 Electrical Work
- Market value
- $99.0B
- Price history
- 2,534 daily closes, Oct 12, 2016 to Nov 10, 2026
Daily prices: Nasdaq.com. Filings and industry codes: SEC EDGAR. Earnings dates: Nasdaq earnings calendar.
Related
All pairs →Other rivals of FIX and PWR
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.
