Constellation Energy Corporation vs The Southern Company
WatchlistCEG / SOPrices through Oct 22, 2026
Why these are rivals: #2 and #3 by market value ($103B vs $93B) in Nasdaq's "Electric Utilities: Central" industry; SEC SIC 4911 / 4911 (same major group); #2 and #3 by market value ($103B vs $93B) with SEC SIC 4911 (Electric Services).
Rivals, but right now the price gap does not have a measured habit of closing, so there is no paper idea, whatever the gap.
- Co-movement: daily return correlation, 252 sessions: 0.11 (needs >= 0.60)
- Mean reversion: ADF t-statistic of the spread: -1.77 (needs <= -2.873 (5% critical value))
Business leadership
SO is the larger business
Annual revenue reported to the SEC. Scale, not market share.
| Year | CEG | SO | Larger |
|---|---|---|---|
| 2025 | $25.5B | $29.6B | SO |
| 2024 | $23.6B | $26.7B | SO |
| 2023 | $24.9B | $25.3B | SO |
| 2022 | $24.4B | $29.3B | SO |
| 2021 | $19.6B | $23.1B | SO |
| 2020 | $17.6B | $20.4B | SO |
SO led in every year with figures for both. Market value: CEG $93.3B, SO $102.7B.
Stock leadership
SO is ahead now
Measured against the pair's own last 252 trading days.
SO leads CEG by 1.26 standard deviations: +19.0% over its usual price ratio. 3 lead switches in the last year.
| Price change | 3 mo | 6 mo | 12 mo |
|---|---|---|---|
| CEG | -7.0% | -12.8% | -28.9% |
| SO | -3.5% | -0.1% | -3.3% |
Relationship
Not a measured twin today
Only these tests can make a pair tradable on paper.
- Pass
- Aligned sessions: 1195 (needs >= 254)
- Fail
- Co-movement: daily return correlation, 252 sessions: 0.11 (needs >= 0.60)
- Fail
- Mean reversion: ADF t-statistic of the spread: -1.77 (needs <= -2.873 (5% critical value))
- Pass
- Speed: half-life of the spread, sessions: 25.18 (needs <= 63)
- Data
- Both stocks current
The twins over two years
Prices side by side, and the gap between them
CEG Constellation Energy Corporation SO The Southern CompanyPrice 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: CEG relative to SO, against the 252 sessions before each day. Above 0: CEG ahead; below 0: SO ahead. Lines at +/-2 (idea) and +/-4 (stop).
Data table (504 sessions)
| Date | CEG index | SO index | z | Ahead |
|---|---|---|---|---|
| 2026-10-22 | 94.47 | 100.62 | -1.26 | SO ahead |
| 2026-10-21 | 100.21 | 96.94 | -0.57 | SO ahead |
| 2026-10-20 | 95.81 | 97.29 | -0.92 | SO ahead |
| 2026-10-19 | 97.42 | 95.74 | -0.69 | SO ahead |
| 2026-10-16 | 100.45 | 97.79 | -0.63 | SO ahead |
| 2026-10-15 | 101.79 | 95.65 | -0.38 | near the usual relationship |
| 2026-10-14 | 103.47 | 95.86 | -0.29 | near the usual relationship |
| 2026-10-13 | 109.49 | 94.50 | +0.21 | near the usual relationship |
| 2026-10-12 | 108.78 | 93.35 | +0.25 | near the usual relationship |
| 2026-10-09 | 110.33 | 92.42 | +0.41 | near the usual relationship |
| 2026-10-08 | 105.52 | 92.40 | +0.10 | near the usual relationship |
| 2026-10-07 | 110.89 | 91.63 | +0.50 | CEG ahead |
| 2026-10-06 | 111.19 | 91.63 | +0.52 | CEG ahead |
| 2026-10-05 | 99.06 | 89.86 | -0.16 | near the usual relationship |
| 2026-10-02 | 95.31 | 89.79 | -0.43 | near the usual relationship |
| 2026-10-01 | 95.84 | 89.52 | -0.37 | near the usual relationship |
| 2026-09-30 | 94.03 | 88.90 | -0.46 | near the usual relationship |
| 2026-09-29 | 97.93 | 89.50 | -0.23 | near the usual relationship |
| 2026-09-28 | 96.40 | 88.32 | -0.25 | near the usual relationship |
| 2026-09-25 | 97.45 | 88.89 | -0.22 | near the usual relationship |
| 2026-09-24 | 96.84 | 88.90 | -0.27 | near the usual relationship |
| 2026-09-23 | 97.68 | 89.52 | -0.26 | near the usual relationship |
| 2026-09-22 | 97.52 | 91.32 | -0.41 | near the usual relationship |
| 2026-09-21 | 97.02 | 91.66 | -0.48 | near the usual relationship |
| 2026-09-18 | 94.28 | 91.72 | -0.69 | SO ahead |
| 2026-09-17 | 97.28 | 93.05 | -0.58 | SO ahead |
| 2026-09-16 | 96.07 | 92.48 | -0.62 | SO ahead |
| 2026-09-15 | 96.20 | 92.18 | -0.60 | SO ahead |
| 2026-09-14 | 97.93 | 93.31 | -0.56 | SO ahead |
| 2026-09-11 | 105.40 | 93.49 | -0.06 | near the usual relationship |
| 2026-09-10 | 105.85 | 94.11 | -0.08 | near the usual relationship |
| 2026-09-09 | 108.79 | 94.74 | +0.06 | near the usual relationship |
| 2026-09-08 | 110.69 | 95.44 | +0.13 | near the usual relationship |
| 2026-09-04 | 110.66 | 94.50 | +0.20 | near the usual relationship |
| 2026-09-03 | 105.51 | 95.21 | -0.18 | near the usual relationship |
| 2026-09-02 | 107.36 | 94.71 | -0.03 | near the usual relationship |
| 2026-09-01 | 103.76 | 94.48 | -0.25 | near the usual relationship |
| 2026-08-31 | 101.71 | 94.38 | -0.38 | near the usual relationship |
| 2026-08-28 | 102.44 | 94.65 | -0.36 | near the usual relationship |
| 2026-08-27 | 104.53 | 95.51 | -0.28 | near the usual relationship |
| 2026-08-26 | 103.46 | 96.27 | -0.41 | near the usual relationship |
| 2026-08-25 | 103.06 | 96.49 | -0.45 | near the usual relationship |
| 2026-08-24 | 101.21 | 96.63 | -0.59 | SO ahead |
| 2026-08-21 | 101.01 | 95.39 | -0.52 | SO ahead |
| 2026-08-20 | 101.02 | 98.06 | -0.71 | SO ahead |
| 2026-08-19 | 101.48 | 98.87 | -0.75 | SO ahead |
| 2026-08-18 | 98.77 | 98.75 | -0.93 | SO ahead |
| 2026-08-17 | 102.98 | 98.98 | -0.66 | SO ahead |
| 2026-08-14 | 104.57 | 99.53 | -0.60 | SO ahead |
| 2026-08-13 | 103.14 | 99.52 | -0.70 | SO ahead |
| 2026-08-12 | 103.15 | 99.23 | -0.68 | SO ahead |
| 2026-08-11 | 103.04 | 98.58 | -0.65 | SO ahead |
| 2026-08-10 | 100.10 | 97.96 | -0.81 | SO ahead |
| 2026-08-07 | 99.90 | 99.41 | -0.94 | SO ahead |
| 2026-08-06 | 96.65 | 99.64 | -1.19 | SO ahead |
| 2026-08-05 | 98.13 | 99.85 | -1.11 | SO ahead |
| 2026-08-04 | 98.92 | 100.01 | -1.07 | SO ahead |
| 2026-08-03 | 101.31 | 99.68 | -0.89 | SO ahead |
| 2026-07-31 | 97.26 | 101.39 | -1.31 | SO ahead |
| 2026-07-30 | 97.56 | 101.18 | -1.28 | SO ahead |
| 2026-07-29 | 95.48 | 103.01 | -1.58 | SO ahead |
| 2026-07-28 | 96.17 | 103.80 | -1.60 | SO ahead |
| 2026-07-27 | 99.94 | 103.47 | -1.31 | SO ahead |
| 2026-07-24 | 101.55 | 104.30 | -1.26 | SO ahead |
| 2026-07-23 | 102.01 | 103.60 | -1.18 | SO ahead |
| 2026-07-22 | 101.75 | 102.75 | -1.15 | SO ahead |
| 2026-07-21 | 97.06 | 100.65 | -1.35 | SO ahead |
| 2026-07-20 | 93.83 | 101.31 | -1.66 | SO ahead |
| 2026-07-17 | 93.42 | 102.21 | -1.78 | SO ahead |
| 2026-07-16 | 93.19 | 103.04 | -1.88 | SO ahead |
| 2026-07-15 | 95.54 | 101.46 | -1.59 | SO ahead |
| 2026-07-14 | 94.92 | 102.92 | -1.77 | SO ahead |
| 2026-07-13 | 95.34 | 103.46 | -1.79 | SO ahead |
| 2026-07-10 | 93.05 | 102.54 | -1.93 | SO ahead |
| 2026-07-09 | 92.81 | 102.07 | -1.94 | SO ahead |
| 2026-07-08 | 90.51 | 103.37 | -2.26 | SO ahead |
| 2026-07-07 | 88.73 | 104.34 | -2.53 | SO ahead |
| 2026-07-06 | 91.01 | 102.95 | -2.25 | SO ahead |
| 2026-07-02 | 88.56 | 105.08 | -2.68 | SO ahead |
| 2026-07-01 | 87.54 | 102.02 | -2.58 | SO ahead |
| 2026-06-30 | 91.93 | 102.65 | -2.26 | SO ahead |
| 2026-06-29 | 95.99 | 103.76 | -2.02 | SO ahead |
| 2026-06-26 | 97.73 | 104.20 | -1.93 | SO ahead |
| 2026-06-25 | 99.46 | 102.86 | -1.69 | SO ahead |
| 2026-06-24 | 99.19 | 102.72 | -1.72 | SO ahead |
| 2026-06-23 | 100.04 | 101.81 | -1.58 | SO ahead |
| 2026-06-22 | 101.99 | 100.20 | -1.30 | SO ahead |
| 2026-06-18 | 101.44 | 99.84 | -1.32 | SO ahead |
| 2026-06-17 | 98.89 | 99.24 | -1.50 | SO ahead |
| 2026-06-16 | 99.20 | 101.15 | -1.65 | SO ahead |
| 2026-06-15 | 97.11 | 100.62 | -1.80 | SO ahead |
| 2026-06-12 | 93.93 | 100.82 | -2.13 | SO ahead |
| 2026-06-11 | 91.32 | 100.03 | -2.34 | SO ahead |
| 2026-06-10 | 89.69 | 100.84 | -2.62 | SO ahead |
| 2026-06-09 | 93.15 | 99.69 | -2.21 | SO ahead |
| 2026-06-08 | 92.79 | 97.90 | -2.10 | SO ahead |
| 2026-06-05 | 94.33 | 99.31 | -2.11 | SO ahead |
| 2026-06-04 | 97.94 | 98.26 | -1.68 | SO ahead |
| 2026-06-03 | 98.92 | 97.05 | -1.49 | SO ahead |
| 2026-06-02 | 100.92 | 97.07 | -1.31 | SO ahead |
| 2026-06-01 | 98.35 | 95.48 | -1.41 | SO ahead |
| 2026-05-29 | 106.51 | 98.72 | -0.98 | SO ahead |
| 2026-05-28 | 105.98 | 99.23 | -1.08 | SO ahead |
| 2026-05-27 | 106.86 | 100.54 | -1.13 | SO ahead |
| 2026-05-26 | 111.63 | 100.91 | -0.76 | SO ahead |
| 2026-05-22 | 108.85 | 101.40 | -1.04 | SO ahead |
| 2026-05-21 | 105.80 | 101.07 | -1.28 | SO ahead |
| 2026-05-20 | 104.11 | 100.41 | -1.38 | SO ahead |
| 2026-05-19 | 96.49 | 100.97 | -2.18 | SO ahead |
| 2026-05-18 | 96.98 | 100.50 | -2.11 | SO ahead |
| 2026-05-15 | 98.90 | 99.26 | -1.82 | SO ahead |
| 2026-05-14 | 101.89 | 100.47 | -1.66 | SO ahead |
| 2026-05-13 | 101.75 | 99.89 | -1.63 | SO ahead |
| 2026-05-12 | 108.68 | 100.25 | -1.02 | SO ahead |
| 2026-05-11 | 110.93 | 99.85 | -0.77 | SO ahead |
| 2026-05-08 | 112.39 | 98.46 | -0.50 | SO ahead |
| 2026-05-07 | 115.22 | 99.13 | -0.32 | near the usual relationship |
| 2026-05-06 | 119.48 | 100.29 | -0.07 | near the usual relationship |
| 2026-05-05 | 118.60 | 102.85 | -0.37 | near the usual relationship |
| 2026-05-04 | 118.84 | 102.95 | -0.35 | near the usual relationship |
| 2026-05-01 | 113.94 | 103.72 | -0.78 | SO ahead |
| 2026-04-30 | 115.86 | 103.71 | -0.61 | SO ahead |
| 2026-04-29 | 109.93 | 100.29 | -0.76 | SO ahead |
| 2026-04-28 | 113.16 | 101.25 | -0.57 | SO ahead |
| 2026-04-27 | 116.66 | 100.57 | -0.23 | near the usual relationship |
| 2026-04-24 | 116.05 | 100.27 | -0.23 | near the usual relationship |
| 2026-04-23 | 108.37 | 100.72 | -0.80 | SO ahead |
| 2026-04-22 | 106.29 | 98.53 | -0.75 | SO ahead |
| 2026-04-21 | 102.79 | 98.58 | -0.99 | SO ahead |
| 2026-04-20 | 106.44 | 100.29 | -0.82 | SO ahead |
| 2026-04-17 | 109.64 | 101.36 | -0.66 | SO ahead |
| 2026-04-16 | 110.73 | 101.78 | -0.60 | SO ahead |
| 2026-04-15 | 109.09 | 101.50 | -0.67 | SO ahead |
| 2026-04-14 | 109.79 | 102.92 | -0.70 | SO ahead |
| 2026-04-13 | 107.98 | 102.89 | -0.80 | SO ahead |
| 2026-04-10 | 106.05 | 104.19 | -0.99 | SO ahead |
| 2026-04-09 | 103.73 | 104.67 | -1.14 | SO ahead |
| 2026-04-08 | 105.22 | 104.21 | -0.98 | SO ahead |
| 2026-04-07 | 100.90 | 103.84 | -1.20 | SO ahead |
| 2026-04-06 | 101.85 | 103.97 | -1.13 | SO ahead |
| 2026-04-02 | 100.98 | 104.52 | -1.20 | SO ahead |
| 2026-04-01 | 103.44 | 103.97 | -1.00 | SO ahead |
| 2026-03-31 | 103.36 | 103.52 | -0.96 | SO ahead |
| 2026-03-30 | 110.53 | 103.96 | -0.56 | SO ahead |
| 2026-03-27 | 111.60 | 102.48 | -0.40 | near the usual relationship |
| 2026-03-26 | 109.26 | 102.34 | -0.51 | SO ahead |
| 2026-03-25 | 112.27 | 101.47 | -0.29 | near the usual relationship |
| 2026-03-24 | 109.14 | 100.79 | -0.41 | near the usual relationship |
| 2026-03-23 | 107.25 | 100.55 | -0.49 | near the usual relationship |
| 2026-03-20 | 104.38 | 100.16 | -0.62 | SO ahead |
| 2026-03-19 | 117.14 | 103.21 | -0.11 | near the usual relationship |
| 2026-03-18 | 117.42 | 103.54 | -0.11 | near the usual relationship |
| 2026-03-17 | 113.89 | 105.39 | -0.38 | near the usual relationship |
| 2026-03-16 | 113.11 | 106.30 | -0.46 | near the usual relationship |
| 2026-03-13 | 111.70 | 105.12 | -0.46 | near the usual relationship |
| 2026-03-12 | 111.62 | 104.93 | -0.44 | near the usual relationship |
| 2026-03-11 | 111.30 | 103.24 | -0.35 | near the usual relationship |
| 2026-03-10 | 117.37 | 103.25 | -0.05 | near the usual relationship |
| 2026-03-09 | 119.56 | 104.30 | +0.00 | near the usual relationship |
| 2026-03-06 | 118.10 | 104.55 | -0.07 | near the usual relationship |
| 2026-03-05 | 122.92 | 104.25 | +0.17 | near the usual relationship |
| 2026-03-04 | 119.50 | 104.71 | +0.00 | near the usual relationship |
| 2026-03-03 | 120.25 | 103.81 | +0.08 | near the usual relationship |
| 2026-03-02 | 121.10 | 104.28 | +0.10 | near the usual relationship |
| 2026-02-27 | 122.11 | 104.44 | +0.14 | near the usual relationship |
| 2026-02-26 | 119.77 | 103.34 | +0.09 | near the usual relationship |
| 2026-02-25 | 120.61 | 102.87 | +0.16 | near the usual relationship |
| 2026-02-24 | 115.72 | 102.76 | -0.06 | near the usual relationship |
| 2026-02-23 | 108.75 | 102.08 | -0.36 | near the usual relationship |
| 2026-02-20 | 109.14 | 101.14 | -0.30 | near the usual relationship |
| 2026-02-19 | 107.96 | 101.94 | -0.40 | near the usual relationship |
| 2026-02-18 | 108.84 | 97.64 | -0.13 | near the usual relationship |
| 2026-02-17 | 112.16 | 98.67 | -0.02 | near the usual relationship |
| 2026-02-13 | 106.76 | 101.83 | -0.47 | near the usual relationship |
| 2026-02-12 | 102.21 | 99.27 | -0.57 | SO ahead |
| 2026-02-11 | 102.48 | 97.45 | -0.46 | near the usual relationship |
| 2026-02-10 | 100.36 | 97.30 | -0.57 | SO ahead |
| 2026-02-09 | 100.74 | 95.86 | -0.47 | near the usual relationship |
| 2026-02-06 | 96.76 | 96.61 | -0.73 | SO ahead |
| 2026-02-05 | 91.45 | 97.68 | -1.11 | SO ahead |
| 2026-02-04 | 92.71 | 96.84 | -0.99 | SO ahead |
| 2026-02-03 | 99.37 | 96.66 | -0.61 | SO ahead |
| 2026-02-02 | 100.27 | 94.58 | -0.45 | near the usual relationship |
| 2026-01-30 | 103.89 | 95.79 | -0.33 | near the usual relationship |
| 2026-01-29 | 106.40 | 95.60 | -0.19 | near the usual relationship |
| 2026-01-28 | 106.58 | 94.73 | -0.13 | near the usual relationship |
| 2026-01-27 | 106.88 | 95.28 | -0.15 | near the usual relationship |
| 2026-01-26 | 105.59 | 94.55 | -0.18 | near the usual relationship |
| 2026-01-23 | 107.00 | 93.89 | -0.08 | near the usual relationship |
| 2026-01-22 | 106.36 | 93.85 | -0.11 | near the usual relationship |
| 2026-01-21 | 108.96 | 95.61 | -0.08 | near the usual relationship |
| 2026-01-20 | 109.34 | 95.26 | -0.05 | near the usual relationship |
| 2026-01-16 | 113.90 | 95.35 | +0.17 | near the usual relationship |
| 2026-01-15 | 126.30 | 95.22 | +0.73 | CEG ahead |
| 2026-01-14 | 122.29 | 94.83 | +0.58 | CEG ahead |
| 2026-01-13 | 123.46 | 93.90 | +0.69 | CEG ahead |
| 2026-01-12 | 124.32 | 93.03 | +0.78 | CEG ahead |
| 2026-01-09 | 126.78 | 93.32 | +0.88 | CEG ahead |
| 2026-01-08 | 119.39 | 93.54 | +0.54 | CEG ahead |
| 2026-01-07 | 125.34 | 92.52 | +0.87 | CEG ahead |
| 2026-01-06 | 131.25 | 93.87 | +1.05 | CEG ahead |
| 2026-01-05 | 131.38 | 93.17 | +1.10 | CEG ahead |
| 2026-01-02 | 135.57 | 93.50 | +1.26 | CEG ahead |
| 2025-12-31 | 130.76 | 93.52 | +1.08 | CEG ahead |
| 2025-12-30 | 132.19 | 93.92 | +1.12 | CEG ahead |
| 2025-12-29 | 132.64 | 93.89 | +1.15 | CEG ahead |
| 2025-12-26 | 133.42 | 93.49 | +1.21 | CEG ahead |
| 2025-12-24 | 134.72 | 93.49 | +1.28 | CEG ahead |
| 2025-12-23 | 133.75 | 92.65 | +1.30 | CEG ahead |
| 2025-12-22 | 132.44 | 91.93 | +1.30 | CEG ahead |
| 2025-12-19 | 131.55 | 91.46 | +1.30 | CEG ahead |
| 2025-12-18 | 133.64 | 93.54 | +1.27 | CEG ahead |
| 2025-12-17 | 126.21 | 93.34 | +0.98 | CEG ahead |
| 2025-12-16 | 135.34 | 91.92 | +1.46 | CEG ahead |
| 2025-12-15 | 132.20 | 92.24 | +1.32 | CEG ahead |
| 2025-12-12 | 130.29 | 90.56 | +1.35 | CEG ahead |
| 2025-12-11 | 140.14 | 90.87 | +1.76 | CEG ahead |
| 2025-12-10 | 134.02 | 90.18 | +1.57 | CEG ahead |
| 2025-12-09 | 132.94 | 91.69 | +1.44 | CEG ahead |
| 2025-12-08 | 132.39 | 91.76 | +1.43 | CEG ahead |
| 2025-12-05 | 133.19 | 92.54 | +1.43 | CEG ahead |
| 2025-12-04 | 136.45 | 93.66 | +1.51 | CEG ahead |
| 2025-12-03 | 133.72 | 94.36 | +1.36 | CEG ahead |
| 2025-12-02 | 134.61 | 95.50 | +1.35 | CEG ahead |
| 2025-12-01 | 132.90 | 95.46 | +1.29 | CEG ahead |
| 2025-11-28 | 134.87 | 97.73 | +1.25 | CEG ahead |
| 2025-11-26 | 132.92 | 96.78 | +1.23 | CEG ahead |
| 2025-11-25 | 130.14 | 95.76 | +1.18 | CEG ahead |
| 2025-11-24 | 131.07 | 95.60 | +1.24 | CEG ahead |
| 2025-11-21 | 125.15 | 95.74 | +0.97 | CEG ahead |
| 2025-11-20 | 127.99 | 94.99 | +1.16 | CEG ahead |
| 2025-11-19 | 132.32 | 95.51 | +1.33 | CEG ahead |
| 2025-11-18 | 125.61 | 97.27 | +0.93 | CEG ahead |
| 2025-11-17 | 125.36 | 97.15 | +0.93 | CEG ahead |
| 2025-11-14 | 125.30 | 97.27 | +0.93 | CEG ahead |
| 2025-11-13 | 124.27 | 97.78 | +0.86 | CEG ahead |
| 2025-11-12 | 131.04 | 98.55 | +1.13 | CEG ahead |
| 2025-11-11 | 130.17 | 97.75 | +1.15 | CEG ahead |
| 2025-11-10 | 133.60 | 97.34 | +1.33 | CEG ahead |
| 2025-11-07 | 132.66 | 98.07 | +1.26 | CEG ahead |
| 2025-11-06 | 130.03 | 97.49 | +1.19 | CEG ahead |
| 2025-11-05 | 134.46 | 98.04 | +1.36 | CEG ahead |
| 2025-11-04 | 134.30 | 99.45 | +1.28 | CEG ahead |
| 2025-11-03 | 139.81 | 99.90 | +1.50 | CEG ahead |
| 2025-10-31 | 139.55 | 100.86 | +1.44 | CEG ahead |
| 2025-10-30 | 141.58 | 101.96 | +1.48 | CEG ahead |
| 2025-10-29 | 148.59 | 100.29 | +1.88 | CEG ahead |
| 2025-10-28 | 142.49 | 100.72 | +1.62 | CEG ahead |
| 2025-10-27 | 144.78 | 102.32 | +1.64 | CEG ahead |
| 2025-10-24 | 144.06 | 102.83 | +1.60 | CEG ahead |
| 2025-10-23 | 135.40 | 103.12 | +1.22 | CEG ahead |
| 2025-10-22 | 129.58 | 104.55 | +0.88 | CEG ahead |
| 2025-10-21 | 132.81 | 104.03 | +1.07 | CEG ahead |
| 2025-10-20 | 136.96 | 104.77 | +1.22 | CEG ahead |
| 2025-10-17 | 143.06 | 104.89 | +1.49 | CEG ahead |
| 2025-10-16 | 146.78 | 105.57 | +1.62 | CEG ahead |
| 2025-10-15 | 149.52 | 106.95 | +1.67 | CEG ahead |
| 2025-10-14 | 144.20 | 106.91 | +1.46 | CEG ahead |
| 2025-10-13 | 140.99 | 105.19 | +1.43 | CEG ahead |
| 2025-10-10 | 136.40 | 105.42 | +1.23 | CEG ahead |
| 2025-10-09 | 141.85 | 103.10 | +1.62 | CEG ahead |
| 2025-10-08 | 137.33 | 103.15 | +1.43 | CEG ahead |
| 2025-10-07 | 132.57 | 103.41 | +1.20 | CEG ahead |
| 2025-10-06 | 134.77 | 102.41 | +1.37 | CEG ahead |
| 2025-10-03 | 133.25 | 101.39 | +1.38 | CEG ahead |
| 2025-10-02 | 132.31 | 100.70 | +1.39 | CEG ahead |
| 2025-10-01 | 129.89 | 101.67 | +1.22 | CEG ahead |
| 2025-09-30 | 121.81 | 101.64 | +0.82 | CEG ahead |
| 2025-09-29 | 123.73 | 100.72 | +0.98 | CEG ahead |
| 2025-09-26 | 122.62 | 101.38 | +0.89 | CEG ahead |
| 2025-09-25 | 120.79 | 100.48 | +0.86 | CEG ahead |
| 2025-09-24 | 125.53 | 101.25 | +1.06 | CEG ahead |
| 2025-09-23 | 124.61 | 100.51 | +1.07 | CEG ahead |
| 2025-09-22 | 128.49 | 99.02 | +1.37 | CEG ahead |
| 2025-09-19 | 122.48 | 98.46 | +1.11 | CEG ahead |
| 2025-09-18 | 119.45 | 98.08 | +0.98 | CEG ahead |
| 2025-09-17 | 118.92 | 98.27 | +0.95 | CEG ahead |
| 2025-09-16 | 119.53 | 97.98 | +1.00 | CEG ahead |
| 2025-09-15 | 122.31 | 98.97 | +1.09 | CEG ahead |
| 2025-09-12 | 119.74 | 98.96 | +0.96 | CEG ahead |
| 2025-09-11 | 117.71 | 98.81 | +0.87 | CEG ahead |
| 2025-09-10 | 118.45 | 98.20 | +0.95 | CEG ahead |
| 2025-09-09 | 111.35 | 97.82 | +0.61 | CEG ahead |
| 2025-09-08 | 110.61 | 97.42 | +0.60 | CEG ahead |
| 2025-09-05 | 111.63 | 98.43 | +0.60 | CEG ahead |
| 2025-09-04 | 114.40 | 98.53 | +0.74 | CEG ahead |
| 2025-09-03 | 114.18 | 98.31 | +0.75 | CEG ahead |
| 2025-09-02 | 113.71 | 98.77 | +0.71 | CEG ahead |
| 2025-08-29 | 114.00 | 98.99 | +0.71 | CEG ahead |
| 2025-08-28 | 118.28 | 98.93 | +0.93 | CEG ahead |
| 2025-08-27 | 116.95 | 100.04 | +0.81 | CEG ahead |
| 2025-08-26 | 117.18 | 99.84 | +0.84 | CEG ahead |
| 2025-08-25 | 115.00 | 99.88 | +0.74 | CEG ahead |
| 2025-08-22 | 114.81 | 101.33 | +0.66 | CEG ahead |
| 2025-08-21 | 115.68 | 101.48 | +0.70 | CEG ahead |
| 2025-08-20 | 116.31 | 101.81 | +0.71 | CEG ahead |
| 2025-08-19 | 117.42 | 101.01 | +0.82 | CEG ahead |
| 2025-08-18 | 119.47 | 99.58 | +1.00 | CEG ahead |
| 2025-08-15 | 119.27 | 100.89 | +0.93 | CEG ahead |
| 2025-08-14 | 120.75 | 101.02 | +0.99 | CEG ahead |
| 2025-08-13 | 121.27 | 101.66 | +0.99 | CEG ahead |
| 2025-08-12 | 125.32 | 100.77 | +1.22 | CEG ahead |
| 2025-08-11 | 122.70 | 101.43 | +1.08 | CEG ahead |
| 2025-08-08 | 124.28 | 101.56 | +1.15 | CEG ahead |
| 2025-08-07 | 124.52 | 102.26 | +1.13 | CEG ahead |
| 2025-08-06 | 125.28 | 101.54 | +1.21 | CEG ahead |
| 2025-08-05 | 127.17 | 101.23 | +1.31 | CEG ahead |
| 2025-08-04 | 131.36 | 102.96 | +1.41 | CEG ahead |
| 2025-08-01 | 126.14 | 101.88 | +1.25 | CEG ahead |
| 2025-07-31 | 128.75 | 101.33 | +1.40 | CEG ahead |
| 2025-07-30 | 127.80 | 101.78 | +1.35 | CEG ahead |
| 2025-07-29 | 122.34 | 102.10 | +1.11 | CEG ahead |
| 2025-07-28 | 121.65 | 101.14 | +1.14 | CEG ahead |
| 2025-07-25 | 121.17 | 102.26 | +1.07 | CEG ahead |
| 2025-07-24 | 119.07 | 101.89 | +1.00 | CEG ahead |
| 2025-07-23 | 119.82 | 102.03 | +1.04 | CEG ahead |
| 2025-07-22 | 117.63 | 102.80 | +0.91 | CEG ahead |
| 2025-07-21 | 117.66 | 101.66 | +0.97 | CEG ahead |
| 2025-07-18 | 118.97 | 100.92 | +1.08 | CEG ahead |
| 2025-07-17 | 114.04 | 100.10 | +0.90 | CEG ahead |
| 2025-07-16 | 114.08 | 100.06 | +0.91 | CEG ahead |
| 2025-07-15 | 117.70 | 99.17 | +1.13 | CEG ahead |
| 2025-07-14 | 120.67 | 99.40 | +1.26 | CEG ahead |
| 2025-07-11 | 119.02 | 99.38 | +1.20 | CEG ahead |
| 2025-07-10 | 116.09 | 100.02 | +1.04 | CEG ahead |
| 2025-07-09 | 117.38 | 98.63 | +1.18 | CEG ahead |
| 2025-07-08 | 115.80 | 97.88 | +1.16 | CEG ahead |
| 2025-07-07 | 117.80 | 98.31 | +1.23 | CEG ahead |
| 2025-07-03 | 115.44 | 98.14 | +1.14 | CEG ahead |
| 2025-07-02 | 113.50 | 97.76 | +1.08 | CEG ahead |
| 2025-07-01 | 113.98 | 98.99 | +1.04 | CEG ahead |
| 2025-06-30 | 119.47 | 98.49 | +1.34 | CEG ahead |
| 2025-06-27 | 118.51 | 97.49 | +1.36 | CEG ahead |
| 2025-06-26 | 119.38 | 96.90 | +1.44 | CEG ahead |
| 2025-06-25 | 116.65 | 96.95 | +1.32 | CEG ahead |
| 2025-06-24 | 118.69 | 97.48 | +1.40 | CEG ahead |
| 2025-06-23 | 116.68 | 97.24 | +1.32 | CEG ahead |
| 2025-06-20 | 112.87 | 95.77 | +1.23 | CEG ahead |
| 2025-06-18 | 113.43 | 95.06 | +1.31 | CEG ahead |
| 2025-06-17 | 113.16 | 94.83 | +1.32 | CEG ahead |
| 2025-06-16 | 114.01 | 95.39 | +1.34 | CEG ahead |
| 2025-06-13 | 109.89 | 96.90 | +1.05 | CEG ahead |
| 2025-06-12 | 111.19 | 96.91 | +1.12 | CEG ahead |
| 2025-06-11 | 108.15 | 96.04 | +1.03 | CEG ahead |
| 2025-06-10 | 107.72 | 95.77 | +1.03 | CEG ahead |
| 2025-06-09 | 110.92 | 94.92 | +1.25 | CEG ahead |
| 2025-06-06 | 110.60 | 94.66 | +1.26 | CEG ahead |
| 2025-06-05 | 107.30 | 94.79 | +1.09 | CEG ahead |
| 2025-06-04 | 110.88 | 94.69 | +1.29 | CEG ahead |
| 2025-06-03 | 115.87 | 96.09 | +1.47 | CEG ahead |
| 2025-06-02 | 116.02 | 96.46 | +1.47 | CEG ahead |
| 2025-05-30 | 113.32 | 96.53 | +1.33 | CEG ahead |
| 2025-05-29 | 112.29 | 95.18 | +1.37 | CEG ahead |
| 2025-05-28 | 114.03 | 94.62 | +1.50 | CEG ahead |
| 2025-05-27 | 114.40 | 96.44 | +1.42 | CEG ahead |
| 2025-05-23 | 110.12 | 96.14 | +1.22 | CEG ahead |
| 2025-05-22 | 107.89 | 95.28 | +1.16 | CEG ahead |
| 2025-05-21 | 106.27 | 96.16 | +1.03 | CEG ahead |
| 2025-05-20 | 108.23 | 97.42 | +1.06 | CEG ahead |
| 2025-05-19 | 108.83 | 95.97 | +1.19 | CEG ahead |
| 2025-05-16 | 107.76 | 95.14 | +1.19 | CEG ahead |
| 2025-05-15 | 105.27 | 93.72 | +1.15 | CEG ahead |
| 2025-05-14 | 106.66 | 91.07 | +1.41 | CEG ahead |
| 2025-05-13 | 107.91 | 91.77 | +1.44 | CEG ahead |
| 2025-05-12 | 105.60 | 94.14 | +1.17 | CEG ahead |
| 2025-05-09 | 100.45 | 96.90 | +0.70 | CEG ahead |
| 2025-05-08 | 100.16 | 96.86 | +0.69 | CEG ahead |
| 2025-05-07 | 99.24 | 98.79 | +0.51 | CEG ahead |
| 2025-05-06 | 101.35 | 97.83 | +0.71 | CEG ahead |
| 2025-05-05 | 91.90 | 97.65 | +0.13 | near the usual relationship |
| 2025-05-02 | 91.52 | 97.65 | +0.10 | near the usual relationship |
| 2025-05-01 | 89.06 | 98.09 | -0.09 | near the usual relationship |
| 2025-04-30 | 82.71 | 98.55 | -0.57 | SO ahead |
| 2025-04-29 | 83.82 | 98.08 | -0.46 | near the usual relationship |
| 2025-04-28 | 83.22 | 97.33 | -0.46 | near the usual relationship |
| 2025-04-25 | 82.54 | 96.99 | -0.48 | near the usual relationship |
| 2025-04-24 | 80.72 | 97.65 | -0.66 | SO ahead |
| 2025-04-23 | 77.66 | 97.74 | -0.91 | SO ahead |
| 2025-04-22 | 74.36 | 98.52 | -1.23 | SO ahead |
| 2025-04-21 | 71.29 | 96.77 | -1.38 | SO ahead |
| 2025-04-17 | 76.50 | 98.47 | -1.07 | SO ahead |
| 2025-04-16 | 75.58 | 97.03 | -1.06 | SO ahead |
| 2025-04-15 | 77.15 | 97.62 | -0.97 | SO ahead |
| 2025-04-14 | 76.51 | 97.77 | -1.04 | SO ahead |
| 2025-04-11 | 77.08 | 96.37 | -0.91 | SO ahead |
| 2025-04-10 | 75.69 | 95.33 | -0.96 | SO ahead |
| 2025-04-09 | 79.75 | 94.17 | -0.57 | SO ahead |
| 2025-04-08 | 68.46 | 93.16 | -1.46 | SO ahead |
| 2025-04-07 | 66.55 | 93.54 | -1.67 | SO ahead |
| 2025-04-04 | 63.28 | 95.39 | -2.14 | SO ahead |
| 2025-04-03 | 70.42 | 99.27 | -1.73 | SO ahead |
| 2025-04-02 | 79.38 | 97.92 | -0.89 | SO ahead |
| 2025-04-01 | 76.60 | 98.48 | -1.16 | SO ahead |
| 2025-03-31 | 74.63 | 98.62 | -1.34 | SO ahead |
| 2025-03-28 | 76.03 | 97.74 | -1.17 | SO ahead |
| 2025-03-27 | 77.44 | 96.56 | -0.98 | SO ahead |
| 2025-03-26 | 80.31 | 95.52 | -0.68 | SO ahead |
| 2025-03-25 | 83.98 | 94.09 | -0.30 | near the usual relationship |
| 2025-03-24 | 84.62 | 95.32 | -0.33 | near the usual relationship |
| 2025-03-21 | 82.35 | 95.84 | -0.54 | SO ahead |
| 2025-03-20 | 81.23 | 96.49 | -0.67 | SO ahead |
| 2025-03-19 | 80.71 | 96.10 | -0.69 | SO ahead |
| 2025-03-18 | 78.05 | 96.77 | -0.95 | SO ahead |
| 2025-03-17 | 80.89 | 97.10 | -0.74 | SO ahead |
| 2025-03-14 | 80.12 | 96.93 | -0.79 | SO ahead |
| 2025-03-13 | 77.68 | 96.13 | -0.94 | SO ahead |
| 2025-03-12 | 79.71 | 95.11 | -0.70 | SO ahead |
| 2025-03-11 | 77.21 | 96.63 | -1.01 | SO ahead |
| 2025-03-10 | 74.85 | 99.70 | -1.43 | SO ahead |
| 2025-03-07 | 78.67 | 98.03 | -1.00 | SO ahead |
| 2025-03-06 | 76.88 | 95.15 | -0.96 | SO ahead |
| 2025-03-05 | 84.88 | 95.08 | -0.31 | near the usual relationship |
| 2025-03-04 | 85.75 | 96.41 | -0.34 | near the usual relationship |
| 2025-03-03 | 85.98 | 97.44 | -0.39 | near the usual relationship |
| 2025-02-28 | 92.74 | 96.30 | +0.18 | near the usual relationship |
| 2025-02-27 | 92.44 | 94.69 | +0.28 | near the usual relationship |
| 2025-02-26 | 99.99 | 95.18 | +0.76 | CEG ahead |
| 2025-02-25 | 97.83 | 96.36 | +0.54 | CEG ahead |
| 2025-02-24 | 99.10 | 95.33 | +0.70 | CEG ahead |
| 2025-02-21 | 105.29 | 94.81 | +1.12 | CEG ahead |
| 2025-02-20 | 114.53 | 94.19 | +1.70 | CEG ahead |
| 2025-02-19 | 119.06 | 92.75 | +2.05 | CEG ahead |
| 2025-02-18 | 120.52 | 92.12 | +2.19 | CEG ahead |
| 2025-02-14 | 117.45 | 91.78 | +2.07 | CEG ahead |
| 2025-02-13 | 115.30 | 93.07 | +1.88 | CEG ahead |
| 2025-02-12 | 116.15 | 93.10 | +1.94 | CEG ahead |
| 2025-02-11 | 116.07 | 92.72 | +1.98 | CEG ahead |
| 2025-02-10 | 119.13 | 91.71 | +2.23 | CEG ahead |
| 2025-02-07 | 114.67 | 90.71 | +2.08 | CEG ahead |
| 2025-02-06 | 115.41 | 89.86 | +2.20 | CEG ahead |
| 2025-02-05 | 116.16 | 89.95 | +2.25 | CEG ahead |
| 2025-02-04 | 113.39 | 89.23 | +2.16 | CEG ahead |
| 2025-02-03 | 113.38 | 90.06 | +2.12 | CEG ahead |
| 2025-01-31 | 111.04 | 90.04 | +2.00 | CEG ahead |
| 2025-01-30 | 114.21 | 91.09 | +2.11 | CEG ahead |
| 2025-01-29 | 108.04 | 88.84 | +1.93 | CEG ahead |
| 2025-01-28 | 103.20 | 89.60 | +1.60 | CEG ahead |
| 2025-01-27 | 101.79 | 92.77 | +1.31 | CEG ahead |
| 2025-01-24 | 128.61 | 89.53 | +2.99 | CEG ahead |
| 2025-01-23 | 128.15 | 88.22 | +3.10 | CEG ahead |
| 2025-01-22 | 123.06 | 88.50 | +2.86 | CEG ahead |
| 2025-01-21 | 119.80 | 90.87 | +2.54 | CEG ahead |
| 2025-01-17 | 117.10 | 89.98 | +2.47 | CEG ahead |
| 2025-01-16 | 116.69 | 89.97 | +2.46 | CEG ahead |
| 2025-01-15 | 111.33 | 88.31 | +2.30 | CEG ahead |
| 2025-01-14 | 106.93 | 88.00 | +2.08 | CEG ahead |
| 2025-01-13 | 103.36 | 87.81 | +1.89 | CEG ahead |
| 2025-01-10 | 112.97 | 87.22 | +2.49 | CEG ahead |
| 2025-01-08 | 90.26 | 89.04 | +1.02 | CEG ahead |
| 2025-01-07 | 94.62 | 86.97 | +1.44 | CEG ahead |
| 2025-01-06 | 97.82 | 86.83 | +1.65 | CEG ahead |
| 2025-01-03 | 93.43 | 88.29 | +1.29 | CEG ahead |
| 2025-01-02 | 89.80 | 88.02 | +1.08 | CEG ahead |
| 2024-12-31 | 82.81 | 88.29 | +0.60 | CEG ahead |
| 2024-12-30 | 83.77 | 88.35 | +0.67 | CEG ahead |
| 2024-12-27 | 83.85 | 89.17 | +0.63 | CEG ahead |
| 2024-12-26 | 84.63 | 88.85 | +0.71 | CEG ahead |
| 2024-12-24 | 85.06 | 89.19 | +0.72 | CEG ahead |
| 2024-12-23 | 84.50 | 89.06 | +0.70 | CEG ahead |
| 2024-12-20 | 84.03 | 88.87 | +0.69 | CEG ahead |
| 2024-12-19 | 83.35 | 87.71 | +0.72 | CEG ahead |
| 2024-12-18 | 83.57 | 87.41 | +0.76 | CEG ahead |
| 2024-12-17 | 86.70 | 89.32 | +0.84 | CEG ahead |
| 2024-12-16 | 88.58 | 87.82 | +1.06 | CEG ahead |
| 2024-12-13 | 88.49 | 89.23 | +0.97 | CEG ahead |
| 2024-12-12 | 88.47 | 89.41 | +0.96 | CEG ahead |
| 2024-12-11 | 87.58 | 89.29 | +0.92 | CEG ahead |
| 2024-12-10 | 86.00 | 90.51 | +0.76 | CEG ahead |
| 2024-12-09 | 88.78 | 90.42 | +0.94 | CEG ahead |
| 2024-12-06 | 93.88 | 90.96 | +1.20 | CEG ahead |
| 2024-12-05 | 94.79 | 92.44 | +1.17 | CEG ahead |
| 2024-12-04 | 94.09 | 92.07 | +1.16 | CEG ahead |
| 2024-12-03 | 91.62 | 92.51 | +1.01 | CEG ahead |
| 2024-12-02 | 92.38 | 94.13 | +0.97 | CEG ahead |
| 2024-11-29 | 94.97 | 95.59 | +1.04 | CEG ahead |
| 2024-11-27 | 93.79 | 96.25 | +0.95 | CEG ahead |
| 2024-11-26 | 98.73 | 95.81 | +1.24 | CEG ahead |
| 2024-11-25 | 92.14 | 94.83 | +0.96 | CEG ahead |
| 2024-11-22 | 92.50 | 93.95 | +1.03 | CEG ahead |
| 2024-11-21 | 93.22 | 94.53 | +1.05 | CEG ahead |
| 2024-11-20 | 87.14 | 94.35 | +0.73 | CEG ahead |
| 2024-11-19 | 86.83 | 94.69 | +0.70 | CEG ahead |
| 2024-11-18 | 85.24 | 94.42 | +0.63 | CEG ahead |
| 2024-11-15 | 83.02 | 94.31 | +0.51 | CEG ahead |
| 2024-11-14 | 83.42 | 93.07 | +0.60 | CEG ahead |
| 2024-11-13 | 83.64 | 93.87 | +0.58 | CEG ahead |
| 2024-11-12 | 84.65 | 94.07 | +0.63 | CEG ahead |
| 2024-11-11 | 87.83 | 94.73 | +0.79 | CEG ahead |
| 2024-11-08 | 88.60 | 95.07 | +0.82 | CEG ahead |
| 2024-11-07 | 89.42 | 93.23 | +0.97 | CEG ahead |
| 2024-11-06 | 86.98 | 93.76 | +0.81 | CEG ahead |
| 2024-11-05 | 86.52 | 95.13 | +0.72 | CEG ahead |
| 2024-11-04 | 83.64 | 94.51 | +0.59 | CEG ahead |
| 2024-11-01 | 95.54 | 94.96 | +1.22 | CEG ahead |
| 2024-10-31 | 97.33 | 97.63 | +1.19 | CEG ahead |
| 2024-10-30 | 96.90 | 95.84 | +1.26 | CEG ahead |
| 2024-10-29 | 98.09 | 96.33 | +1.31 | CEG ahead |
| 2024-10-28 | 98.82 | 98.44 | +1.25 | CEG ahead |
| 2024-10-25 | 97.87 | 98.54 | +1.21 | CEG ahead |
| 2024-10-24 | 97.90 | 100.40 | +1.13 | CEG ahead |
| 2024-10-23 | 98.48 | 100.98 | +1.14 | CEG ahead |
| 2024-10-22 | 98.46 | 99.83 | +1.20 | CEG ahead |
| 2024-10-21 | 101.32 | 99.45 | +1.37 | CEG ahead |
| 2024-10-18 | 100.00 | 100.00 | +1.29 | CEG ahead |
One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Jan 10, 2025 (CEG +25.2%, SO -2.0%); Jan 27, 2025 (CEG -20.9%, SO +3.6%). Upcoming earnings: SO Nov 5, 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)
No simulated trade through Oct 20, 2026: the pair rarely passed every test while 2 standard deviations apart.
Per $10,000 a leg. A replay on today's companies cannot prove an edge.
The companies
CEG and SO at a glance
CEG Constellation Energy Corporation
- Listing
- Nasdaq · SEC CIK 1868275
- Industry
- Electric Utilities: Central · SIC 4911 Electric Services
- Market value
- $93.3B
- Price history
- 1,195 daily closes, Jan 19, 2022 to Oct 22, 2026
SO The Southern Company
- Listing
- NYSE · SEC CIK 92122
- Industry
- Electric Utilities: Central · SIC 4911 Electric Services
- Market value
- $102.7B
- 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 CEG and SO
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.
