Equifax Inc. vs Moody's Corporation
WatchlistEFX / MCOPrices through Oct 22, 2026
Why these are rivals: #2 and #3 by market value ($83B vs $19B) with SEC SIC 7320 (Services-Consumer Credit Reporting, Collection Agencies).
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: 0.58 (needs >= 0.60)
- Mean reversion: ADF t-statistic of the spread: -2.34 (needs <= -2.873 (5% critical value))
Business leadership
MCO is the larger business
Annual revenue reported to the SEC. Scale, not market share.
| Year | EFX | MCO | Larger |
|---|---|---|---|
| 2025 | $6.1B | $7.7B | MCO |
| 2024 | $5.7B | $7.1B | MCO |
| 2023 | $5.3B | $5.9B | MCO |
| 2022 | $5.1B | $5.5B | MCO |
| 2021 | $4.9B | $6.2B | MCO |
| 2020 | $4.1B | $5.4B | MCO |
MCO led in every year with figures for both. Market value: EFX $18.6B, MCO $83.4B.
Stock leadership
Neither is clearly ahead
Measured against the pair's own last 252 trading days.
The gap is 0.23 standard deviations, close to the usual relationship. 0 lead switches in the last year.
| Price change | 3 mo | 6 mo | 12 mo |
|---|---|---|---|
| EFX | +8.5% | +7.0% | -18.6% |
| MCO | +4.1% | +8.6% | +1.3% |
Relationship
Not a measured twin today
Only these tests can make a pair tradable on paper.
- Pass
- Aligned sessions: 2521 (needs >= 254)
- Fail
- Co-movement: daily return correlation, 252 sessions: 0.58 (needs >= 0.60)
- Fail
- Mean reversion: ADF t-statistic of the spread: -2.34 (needs <= -2.873 (5% critical value))
- Pass
- Speed: half-life of the spread, sessions: 26.10 (needs <= 63)
- Data
- Both stocks current
The twins over two years
Prices side by side, and the gap between them
EFX Equifax Inc. MCO Moody's CorporationPrice 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: EFX relative to MCO, against the 252 sessions before each day. Above 0: EFX ahead; below 0: MCO ahead. Lines at +/-2 (idea) and +/-4 (stop).
Data table (504 sessions)
| Date | EFX index | MCO index | z | Ahead |
|---|---|---|---|---|
| 2026-10-22 | 66.36 | 100.53 | -0.23 | near the usual relationship |
| 2026-10-21 | 62.26 | 98.48 | -0.65 | MCO ahead |
| 2026-10-20 | 62.61 | 97.32 | -0.49 | near the usual relationship |
| 2026-10-19 | 56.23 | 98.53 | -1.63 | MCO ahead |
| 2026-10-16 | 57.18 | 99.31 | -1.56 | MCO ahead |
| 2026-10-15 | 57.19 | 99.02 | -1.54 | MCO ahead |
| 2026-10-14 | 53.32 | 94.74 | -1.79 | MCO ahead |
| 2026-10-13 | 52.87 | 95.02 | -1.92 | MCO ahead |
| 2026-10-12 | 52.25 | 96.32 | -2.18 | MCO ahead |
| 2026-10-09 | 51.70 | 95.04 | -2.17 | MCO ahead |
| 2026-10-08 | 51.61 | 93.91 | -2.09 | MCO ahead |
| 2026-10-07 | 50.51 | 92.05 | -2.13 | MCO ahead |
| 2026-10-06 | 50.53 | 92.60 | -2.20 | MCO ahead |
| 2026-10-05 | 50.57 | 91.75 | -2.13 | MCO ahead |
| 2026-10-02 | 49.65 | 90.36 | -2.16 | MCO ahead |
| 2026-10-01 | 49.55 | 91.59 | -2.32 | MCO ahead |
| 2026-09-30 | 48.67 | 92.97 | -2.65 | MCO ahead |
| 2026-09-29 | 49.94 | 93.11 | -2.44 | MCO ahead |
| 2026-09-28 | 51.70 | 94.19 | -2.23 | MCO ahead |
| 2026-09-25 | 52.52 | 95.95 | -2.27 | MCO ahead |
| 2026-09-24 | 52.77 | 95.68 | -2.20 | MCO ahead |
| 2026-09-23 | 55.08 | 97.01 | -1.95 | MCO ahead |
| 2026-09-22 | 56.66 | 96.07 | -1.60 | MCO ahead |
| 2026-09-21 | 56.25 | 95.65 | -1.63 | MCO ahead |
| 2026-09-18 | 56.34 | 95.93 | -1.65 | MCO ahead |
| 2026-09-17 | 57.15 | 94.56 | -1.40 | MCO ahead |
| 2026-09-16 | 58.09 | 95.26 | -1.33 | MCO ahead |
| 2026-09-15 | 59.25 | 95.64 | -1.19 | MCO ahead |
| 2026-09-14 | 61.10 | 97.84 | -1.13 | MCO ahead |
| 2026-09-11 | 59.93 | 97.23 | -1.26 | MCO ahead |
| 2026-09-10 | 59.59 | 95.68 | -1.17 | MCO ahead |
| 2026-09-09 | 59.61 | 97.16 | -1.31 | MCO ahead |
| 2026-09-08 | 60.86 | 98.52 | -1.26 | MCO ahead |
| 2026-09-04 | 62.79 | 101.04 | -1.22 | MCO ahead |
| 2026-09-03 | 67.06 | 103.24 | -0.84 | MCO ahead |
| 2026-09-02 | 65.78 | 100.32 | -0.76 | MCO ahead |
| 2026-09-01 | 66.03 | 101.28 | -0.82 | MCO ahead |
| 2026-08-31 | 67.08 | 103.31 | -0.86 | MCO ahead |
| 2026-08-28 | 68.92 | 105.42 | -0.81 | MCO ahead |
| 2026-08-27 | 67.51 | 104.21 | -0.89 | MCO ahead |
| 2026-08-26 | 67.58 | 105.34 | -0.99 | MCO ahead |
| 2026-08-25 | 68.05 | 105.05 | -0.91 | MCO ahead |
| 2026-08-24 | 69.02 | 104.69 | -0.76 | MCO ahead |
| 2026-08-21 | 68.31 | 103.04 | -0.72 | MCO ahead |
| 2026-08-20 | 68.23 | 102.11 | -0.66 | MCO ahead |
| 2026-08-19 | 68.12 | 101.75 | -0.65 | MCO ahead |
| 2026-08-18 | 64.48 | 99.45 | -0.93 | MCO ahead |
| 2026-08-17 | 62.70 | 97.69 | -1.03 | MCO ahead |
| 2026-08-14 | 64.13 | 99.28 | -0.98 | MCO ahead |
| 2026-08-13 | 65.81 | 99.99 | -0.83 | MCO ahead |
| 2026-08-12 | 64.00 | 97.83 | -0.88 | MCO ahead |
| 2026-08-11 | 64.53 | 97.55 | -0.80 | MCO ahead |
| 2026-08-10 | 64.20 | 97.89 | -0.88 | MCO ahead |
| 2026-08-07 | 64.74 | 97.81 | -0.80 | MCO ahead |
| 2026-08-06 | 62.34 | 96.86 | -1.05 | MCO ahead |
| 2026-08-05 | 62.90 | 99.08 | -1.18 | MCO ahead |
| 2026-08-04 | 62.81 | 99.02 | -1.19 | MCO ahead |
| 2026-08-03 | 61.74 | 98.96 | -1.35 | MCO ahead |
| 2026-07-31 | 61.21 | 97.94 | -1.34 | MCO ahead |
| 2026-07-30 | 62.46 | 98.73 | -1.25 | MCO ahead |
| 2026-07-29 | 66.33 | 98.93 | -0.76 | MCO ahead |
| 2026-07-28 | 66.32 | 99.13 | -0.78 | MCO ahead |
| 2026-07-27 | 62.88 | 99.49 | -1.28 | MCO ahead |
| 2026-07-24 | 61.19 | 96.53 | -1.27 | MCO ahead |
| 2026-07-23 | 59.12 | 96.68 | -1.59 | MCO ahead |
| 2026-07-22 | 60.45 | 100.25 | -1.72 | MCO ahead |
| 2026-07-21 | 61.35 | 100.47 | -1.63 | MCO ahead |
| 2026-07-20 | 63.86 | 103.46 | -1.54 | MCO ahead |
| 2026-07-17 | 62.80 | 104.59 | -1.80 | MCO ahead |
| 2026-07-16 | 63.70 | 106.26 | -1.83 | MCO ahead |
| 2026-07-15 | 60.86 | 103.28 | -1.99 | MCO ahead |
| 2026-07-14 | 59.20 | 101.28 | -2.08 | MCO ahead |
| 2026-07-13 | 61.21 | 101.49 | -1.83 | MCO ahead |
| 2026-07-10 | 59.02 | 99.76 | -2.01 | MCO ahead |
| 2026-07-09 | 59.10 | 99.71 | -2.01 | MCO ahead |
| 2026-07-08 | 59.25 | 99.31 | -1.98 | MCO ahead |
| 2026-07-07 | 61.91 | 102.46 | -1.88 | MCO ahead |
| 2026-07-06 | 60.97 | 102.11 | -2.01 | MCO ahead |
| 2026-07-02 | 61.02 | 100.42 | -1.87 | MCO ahead |
| 2026-07-01 | 57.51 | 95.89 | -2.01 | MCO ahead |
| 2026-06-30 | 56.29 | 92.72 | -1.92 | MCO ahead |
| 2026-06-29 | 56.23 | 92.69 | -1.94 | MCO ahead |
| 2026-06-26 | 56.20 | 92.13 | -1.91 | MCO ahead |
| 2026-06-25 | 53.88 | 89.84 | -2.08 | MCO ahead |
| 2026-06-24 | 55.89 | 92.08 | -1.99 | MCO ahead |
| 2026-06-23 | 54.09 | 90.89 | -2.19 | MCO ahead |
| 2026-06-22 | 54.43 | 91.58 | -2.22 | MCO ahead |
| 2026-06-18 | 54.59 | 92.26 | -2.28 | MCO ahead |
| 2026-06-17 | 54.91 | 93.40 | -2.36 | MCO ahead |
| 2026-06-16 | 59.27 | 95.90 | -1.93 | MCO ahead |
| 2026-06-15 | 58.56 | 92.96 | -1.77 | MCO ahead |
| 2026-06-12 | 58.06 | 91.69 | -1.74 | MCO ahead |
| 2026-06-11 | 56.59 | 90.45 | -1.85 | MCO ahead |
| 2026-06-10 | 58.89 | 92.27 | -1.69 | MCO ahead |
| 2026-06-09 | 59.71 | 92.11 | -1.56 | MCO ahead |
| 2026-06-08 | 59.54 | 90.85 | -1.48 | MCO ahead |
| 2026-06-05 | 61.04 | 92.40 | -1.42 | MCO ahead |
| 2026-06-04 | 60.64 | 91.95 | -1.44 | MCO ahead |
| 2026-06-03 | 60.34 | 91.80 | -1.48 | MCO ahead |
| 2026-06-02 | 62.45 | 92.86 | -1.29 | MCO ahead |
| 2026-06-01 | 61.56 | 95.03 | -1.63 | MCO ahead |
| 2026-05-29 | 58.79 | 92.79 | -1.84 | MCO ahead |
| 2026-05-28 | 58.10 | 92.22 | -1.90 | MCO ahead |
| 2026-05-27 | 58.05 | 92.45 | -1.95 | MCO ahead |
| 2026-05-26 | 57.74 | 92.35 | -2.01 | MCO ahead |
| 2026-05-22 | 58.17 | 91.95 | -1.92 | MCO ahead |
| 2026-05-21 | 57.84 | 91.18 | -1.91 | MCO ahead |
| 2026-05-20 | 58.46 | 90.95 | -1.81 | MCO ahead |
| 2026-05-19 | 57.03 | 88.95 | -1.84 | MCO ahead |
| 2026-05-18 | 58.24 | 90.78 | -1.85 | MCO ahead |
| 2026-05-15 | 56.16 | 87.81 | -1.89 | MCO ahead |
| 2026-05-14 | 55.93 | 88.58 | -2.02 | MCO ahead |
| 2026-05-13 | 56.72 | 89.74 | -2.03 | MCO ahead |
| 2026-05-12 | 59.14 | 92.48 | -1.95 | MCO ahead |
| 2026-05-11 | 59.51 | 91.80 | -1.84 | MCO ahead |
| 2026-05-08 | 62.35 | 92.40 | -1.50 | MCO ahead |
| 2026-05-07 | 62.28 | 93.58 | -1.63 | MCO ahead |
| 2026-05-06 | 61.42 | 91.85 | -1.60 | MCO ahead |
| 2026-05-05 | 60.29 | 93.06 | -1.89 | MCO ahead |
| 2026-05-04 | 61.08 | 92.04 | -1.69 | MCO ahead |
| 2026-05-01 | 61.65 | 93.31 | -1.75 | MCO ahead |
| 2026-04-30 | 61.68 | 94.55 | -1.87 | MCO ahead |
| 2026-04-29 | 61.19 | 94.20 | -1.92 | MCO ahead |
| 2026-04-28 | 60.89 | 93.76 | -1.94 | MCO ahead |
| 2026-04-27 | 60.49 | 94.33 | -2.07 | MCO ahead |
| 2026-04-24 | 61.16 | 93.36 | -1.90 | MCO ahead |
| 2026-04-23 | 62.03 | 92.61 | -1.72 | MCO ahead |
| 2026-04-22 | 63.36 | 95.55 | -1.83 | MCO ahead |
| 2026-04-21 | 68.24 | 94.09 | -1.05 | MCO ahead |
| 2026-04-20 | 70.37 | 94.16 | -0.79 | MCO ahead |
| 2026-04-17 | 69.58 | 93.22 | -0.81 | MCO ahead |
| 2026-04-16 | 67.51 | 91.80 | -0.94 | MCO ahead |
| 2026-04-15 | 66.26 | 91.47 | -1.08 | MCO ahead |
| 2026-04-14 | 66.11 | 89.68 | -0.94 | MCO ahead |
| 2026-04-13 | 66.13 | 90.00 | -0.97 | MCO ahead |
| 2026-04-10 | 63.11 | 87.50 | -1.15 | MCO ahead |
| 2026-04-09 | 64.51 | 89.71 | -1.18 | MCO ahead |
| 2026-04-08 | 65.39 | 91.64 | -1.26 | MCO ahead |
| 2026-04-07 | 64.48 | 89.67 | -1.20 | MCO ahead |
| 2026-04-06 | 64.57 | 90.92 | -1.33 | MCO ahead |
| 2026-04-02 | 64.68 | 90.24 | -1.25 | MCO ahead |
| 2026-04-01 | 63.71 | 89.83 | -1.36 | MCO ahead |
| 2026-03-31 | 63.86 | 89.31 | -1.30 | MCO ahead |
| 2026-03-30 | 62.91 | 88.45 | -1.36 | MCO ahead |
| 2026-03-27 | 60.94 | 86.98 | -1.51 | MCO ahead |
| 2026-03-26 | 61.89 | 88.50 | -1.54 | MCO ahead |
| 2026-03-25 | 61.19 | 87.63 | -1.57 | MCO ahead |
| 2026-03-24 | 60.11 | 87.72 | -1.76 | MCO ahead |
| 2026-03-23 | 63.71 | 90.30 | -1.50 | MCO ahead |
| 2026-03-20 | 63.13 | 89.08 | -1.48 | MCO ahead |
| 2026-03-19 | 64.36 | 89.22 | -1.32 | MCO ahead |
| 2026-03-18 | 65.18 | 89.81 | -1.28 | MCO ahead |
| 2026-03-17 | 66.43 | 90.29 | -1.16 | MCO ahead |
| 2026-03-16 | 65.67 | 88.58 | -1.10 | MCO ahead |
| 2026-03-13 | 65.35 | 88.03 | -1.10 | MCO ahead |
| 2026-03-12 | 64.70 | 87.31 | -1.12 | MCO ahead |
| 2026-03-11 | 67.93 | 91.29 | -1.09 | MCO ahead |
| 2026-03-10 | 69.48 | 92.58 | -1.02 | MCO ahead |
| 2026-03-09 | 72.56 | 94.72 | -0.84 | MCO ahead |
| 2026-03-06 | 73.70 | 96.62 | -0.89 | MCO ahead |
| 2026-03-05 | 73.36 | 96.23 | -0.90 | MCO ahead |
| 2026-03-04 | 73.25 | 96.43 | -0.94 | MCO ahead |
| 2026-03-03 | 73.20 | 95.05 | -0.81 | MCO ahead |
| 2026-03-02 | 73.77 | 95.42 | -0.78 | MCO ahead |
| 2026-02-27 | 74.10 | 97.77 | -0.97 | MCO ahead |
| 2026-02-26 | 73.71 | 98.16 | -1.07 | MCO ahead |
| 2026-02-25 | 70.26 | 94.86 | -1.20 | MCO ahead |
| 2026-02-24 | 68.91 | 92.65 | -1.17 | MCO ahead |
| 2026-02-23 | 66.82 | 89.49 | -1.14 | MCO ahead |
| 2026-02-20 | 70.02 | 91.68 | -0.93 | MCO ahead |
| 2026-02-19 | 69.26 | 91.98 | -1.07 | MCO ahead |
| 2026-02-18 | 68.30 | 92.28 | -1.24 | MCO ahead |
| 2026-02-17 | 68.34 | 86.64 | -0.64 | MCO ahead |
| 2026-02-13 | 68.37 | 87.30 | -0.71 | MCO ahead |
| 2026-02-12 | 66.73 | 84.98 | -0.69 | MCO ahead |
| 2026-02-11 | 70.07 | 84.39 | -0.16 | near the usual relationship |
| 2026-02-10 | 71.89 | 85.77 | -0.08 | near the usual relationship |
| 2026-02-09 | 70.78 | 92.02 | -0.89 | MCO ahead |
| 2026-02-06 | 69.37 | 92.64 | -1.16 | MCO ahead |
| 2026-02-05 | 67.74 | 93.70 | -1.51 | MCO ahead |
| 2026-02-04 | 64.20 | 94.42 | -2.11 | MCO ahead |
| 2026-02-03 | 62.08 | 96.44 | -2.69 | MCO ahead |
| 2026-02-02 | 70.63 | 105.85 | -2.37 | MCO ahead |
| 2026-01-30 | 71.42 | 105.55 | -2.26 | MCO ahead |
| 2026-01-29 | 72.34 | 105.53 | -2.16 | MCO ahead |
| 2026-01-28 | 72.81 | 105.77 | -2.15 | MCO ahead |
| 2026-01-27 | 73.77 | 106.23 | -2.09 | MCO ahead |
| 2026-01-26 | 76.06 | 107.57 | -1.93 | MCO ahead |
| 2026-01-23 | 74.38 | 107.28 | -2.15 | MCO ahead |
| 2026-01-22 | 75.92 | 108.55 | -2.09 | MCO ahead |
| 2026-01-21 | 75.18 | 107.44 | -2.11 | MCO ahead |
| 2026-01-20 | 73.89 | 105.90 | -2.17 | MCO ahead |
| 2026-01-16 | 77.86 | 110.33 | -2.07 | MCO ahead |
| 2026-01-15 | 77.74 | 110.47 | -2.13 | MCO ahead |
| 2026-01-14 | 77.94 | 109.73 | -2.06 | MCO ahead |
| 2026-01-13 | 77.15 | 109.51 | -2.17 | MCO ahead |
| 2026-01-12 | 78.60 | 109.55 | -2.00 | MCO ahead |
| 2026-01-09 | 80.49 | 108.83 | -1.70 | MCO ahead |
| 2026-01-08 | 77.32 | 108.74 | -2.15 | MCO ahead |
| 2026-01-07 | 75.71 | 108.80 | -2.42 | MCO ahead |
| 2026-01-06 | 75.27 | 109.10 | -2.55 | MCO ahead |
| 2026-01-05 | 78.30 | 107.87 | -2.02 | MCO ahead |
| 2026-01-02 | 75.90 | 102.15 | -1.77 | MCO ahead |
| 2025-12-31 | 76.95 | 104.58 | -1.91 | MCO ahead |
| 2025-12-30 | 78.29 | 105.59 | -1.84 | MCO ahead |
| 2025-12-29 | 78.77 | 106.26 | -1.86 | MCO ahead |
| 2025-12-26 | 78.75 | 106.47 | -1.91 | MCO ahead |
| 2025-12-24 | 78.22 | 105.90 | -1.95 | MCO ahead |
| 2025-12-23 | 78.01 | 105.51 | -1.96 | MCO ahead |
| 2025-12-22 | 78.18 | 104.34 | -1.82 | MCO ahead |
| 2025-12-19 | 77.72 | 102.99 | -1.76 | MCO ahead |
| 2025-12-18 | 77.81 | 101.89 | -1.63 | MCO ahead |
| 2025-12-17 | 77.36 | 102.16 | -1.75 | MCO ahead |
| 2025-12-16 | 77.50 | 100.93 | -1.60 | MCO ahead |
| 2025-12-15 | 76.96 | 99.80 | -1.57 | MCO ahead |
| 2025-12-12 | 78.31 | 99.62 | -1.35 | MCO ahead |
| 2025-12-11 | 78.23 | 99.40 | -1.35 | MCO ahead |
| 2025-12-10 | 76.31 | 98.27 | -1.52 | MCO ahead |
| 2025-12-09 | 74.12 | 99.57 | -2.06 | MCO ahead |
| 2025-12-08 | 74.57 | 99.73 | -2.03 | MCO ahead |
| 2025-12-05 | 75.01 | 101.65 | -2.22 | MCO ahead |
| 2025-12-04 | 74.92 | 100.21 | -2.08 | MCO ahead |
| 2025-12-03 | 74.38 | 100.73 | -2.27 | MCO ahead |
| 2025-12-02 | 74.00 | 99.87 | -2.26 | MCO ahead |
| 2025-12-01 | 74.09 | 99.75 | -2.26 | MCO ahead |
| 2025-11-28 | 75.31 | 100.47 | -2.18 | MCO ahead |
| 2025-11-26 | 75.43 | 99.73 | -2.09 | MCO ahead |
| 2025-11-25 | 76.20 | 99.43 | -1.94 | MCO ahead |
| 2025-11-24 | 74.34 | 98.01 | -2.10 | MCO ahead |
| 2025-11-21 | 75.79 | 98.20 | -1.89 | MCO ahead |
| 2025-11-20 | 73.28 | 97.15 | -2.23 | MCO ahead |
| 2025-11-19 | 73.14 | 96.81 | -2.24 | MCO ahead |
| 2025-11-18 | 72.53 | 96.25 | -2.31 | MCO ahead |
| 2025-11-17 | 72.65 | 96.65 | -2.38 | MCO ahead |
| 2025-11-14 | 73.46 | 98.16 | -2.47 | MCO ahead |
| 2025-11-13 | 73.41 | 100.47 | -2.86 | MCO ahead |
| 2025-11-12 | 73.89 | 100.49 | -2.82 | MCO ahead |
| 2025-11-11 | 75.41 | 100.93 | -2.63 | MCO ahead |
| 2025-11-10 | 74.05 | 99.28 | -2.70 | MCO ahead |
| 2025-11-07 | 73.62 | 99.90 | -2.92 | MCO ahead |
| 2025-11-06 | 72.41 | 98.72 | -3.05 | MCO ahead |
| 2025-11-05 | 73.52 | 99.59 | -3.01 | MCO ahead |
| 2025-11-04 | 73.92 | 99.80 | -3.01 | MCO ahead |
| 2025-11-03 | 74.41 | 99.49 | -2.91 | MCO ahead |
| 2025-10-31 | 74.86 | 98.33 | -2.68 | MCO ahead |
| 2025-10-30 | 75.00 | 98.06 | -2.64 | MCO ahead |
| 2025-10-29 | 76.07 | 96.57 | -2.21 | MCO ahead |
| 2025-10-28 | 79.49 | 100.47 | -2.16 | MCO ahead |
| 2025-10-27 | 81.22 | 101.36 | -1.98 | MCO ahead |
| 2025-10-24 | 82.91 | 100.48 | -1.53 | MCO ahead |
| 2025-10-23 | 82.03 | 98.12 | -1.33 | MCO ahead |
| 2025-10-22 | 81.79 | 96.79 | -1.17 | MCO ahead |
| 2025-10-21 | 81.54 | 99.28 | -1.63 | MCO ahead |
| 2025-10-20 | 81.96 | 97.13 | -1.21 | MCO ahead |
| 2025-10-17 | 80.47 | 96.43 | -1.40 | MCO ahead |
| 2025-10-16 | 80.57 | 95.93 | -1.30 | MCO ahead |
| 2025-10-15 | 81.44 | 97.96 | -1.47 | MCO ahead |
| 2025-10-14 | 80.97 | 98.52 | -1.66 | MCO ahead |
| 2025-10-13 | 79.95 | 96.98 | -1.62 | MCO ahead |
| 2025-10-10 | 81.67 | 99.11 | -1.63 | MCO ahead |
| 2025-10-09 | 82.72 | 100.82 | -1.71 | MCO ahead |
| 2025-10-08 | 85.00 | 100.33 | -1.22 | MCO ahead |
| 2025-10-07 | 84.40 | 99.99 | -1.28 | MCO ahead |
| 2025-10-06 | 84.16 | 98.97 | -1.17 | MCO ahead |
| 2025-10-03 | 83.93 | 99.30 | -1.27 | MCO ahead |
| 2025-10-02 | 82.40 | 98.71 | -1.46 | MCO ahead |
| 2025-10-01 | 90.02 | 98.23 | -0.09 | near the usual relationship |
| 2025-09-30 | 90.97 | 97.55 | +0.15 | near the usual relationship |
| 2025-09-29 | 90.64 | 98.44 | -0.04 | near the usual relationship |
| 2025-09-26 | 90.17 | 97.60 | +0.00 | near the usual relationship |
| 2025-09-25 | 89.28 | 96.77 | -0.03 | near the usual relationship |
| 2025-09-24 | 91.29 | 97.20 | +0.21 | near the usual relationship |
| 2025-09-23 | 91.34 | 97.61 | +0.15 | near the usual relationship |
| 2025-09-22 | 91.13 | 99.97 | -0.22 | near the usual relationship |
| 2025-09-19 | 91.34 | 98.42 | +0.02 | near the usual relationship |
| 2025-09-18 | 92.46 | 98.74 | +0.13 | near the usual relationship |
| 2025-09-17 | 93.03 | 104.77 | -0.59 | MCO ahead |
| 2025-09-16 | 92.41 | 104.00 | -0.59 | MCO ahead |
| 2025-09-15 | 91.10 | 104.16 | -0.80 | MCO ahead |
| 2025-09-12 | 90.87 | 104.88 | -0.93 | MCO ahead |
| 2025-09-11 | 92.28 | 106.19 | -0.90 | MCO ahead |
| 2025-09-10 | 87.08 | 103.61 | -1.35 | MCO ahead |
| 2025-09-09 | 89.37 | 103.99 | -1.06 | MCO ahead |
| 2025-09-08 | 89.71 | 103.92 | -1.01 | MCO ahead |
| 2025-09-05 | 88.54 | 102.16 | -0.97 | MCO ahead |
| 2025-09-04 | 85.32 | 102.31 | -1.47 | MCO ahead |
| 2025-09-03 | 84.22 | 101.63 | -1.56 | MCO ahead |
| 2025-09-02 | 82.99 | 102.06 | -1.81 | MCO ahead |
| 2025-08-29 | 87.34 | 104.36 | -1.45 | MCO ahead |
| 2025-08-28 | 86.47 | 104.29 | -1.58 | MCO ahead |
| 2025-08-27 | 87.23 | 104.42 | -1.50 | MCO ahead |
| 2025-08-26 | 87.80 | 104.69 | -1.46 | MCO ahead |
| 2025-08-25 | 88.93 | 104.41 | -1.27 | MCO ahead |
| 2025-08-22 | 90.43 | 105.64 | -1.22 | MCO ahead |
| 2025-08-21 | 87.04 | 104.30 | -1.55 | MCO ahead |
| 2025-08-20 | 88.07 | 105.42 | -1.54 | MCO ahead |
| 2025-08-19 | 88.62 | 104.82 | -1.40 | MCO ahead |
| 2025-08-18 | 87.10 | 104.25 | -1.56 | MCO ahead |
| 2025-08-15 | 87.85 | 105.73 | -1.64 | MCO ahead |
| 2025-08-14 | 87.97 | 106.73 | -1.76 | MCO ahead |
| 2025-08-13 | 89.83 | 106.69 | -1.51 | MCO ahead |
| 2025-08-12 | 85.46 | 105.65 | -2.03 | MCO ahead |
| 2025-08-11 | 84.98 | 104.75 | -2.02 | MCO ahead |
| 2025-08-08 | 85.04 | 105.49 | -2.12 | MCO ahead |
| 2025-08-07 | 85.79 | 105.24 | -2.00 | MCO ahead |
| 2025-08-06 | 85.32 | 105.94 | -2.18 | MCO ahead |
| 2025-08-05 | 85.16 | 105.61 | -2.18 | MCO ahead |
| 2025-08-04 | 86.26 | 106.43 | -2.15 | MCO ahead |
| 2025-08-01 | 85.11 | 102.62 | -1.87 | MCO ahead |
| 2025-07-31 | 85.19 | 105.58 | -2.25 | MCO ahead |
| 2025-07-30 | 85.85 | 104.95 | -2.10 | MCO ahead |
| 2025-07-29 | 87.67 | 104.51 | -1.79 | MCO ahead |
| 2025-07-28 | 85.45 | 103.90 | -2.07 | MCO ahead |
| 2025-07-25 | 87.33 | 105.01 | -1.95 | MCO ahead |
| 2025-07-24 | 87.23 | 105.04 | -1.99 | MCO ahead |
| 2025-07-23 | 87.19 | 103.98 | -1.88 | MCO ahead |
| 2025-07-22 | 84.55 | 102.18 | -2.09 | MCO ahead |
| 2025-07-21 | 92.07 | 102.40 | -0.97 | MCO ahead |
| 2025-07-18 | 93.30 | 102.34 | -0.78 | MCO ahead |
| 2025-07-17 | 92.71 | 102.86 | -0.95 | MCO ahead |
| 2025-07-16 | 91.96 | 102.41 | -1.00 | MCO ahead |
| 2025-07-15 | 91.28 | 101.40 | -0.98 | MCO ahead |
| 2025-07-14 | 92.43 | 103.06 | -1.03 | MCO ahead |
| 2025-07-11 | 91.73 | 102.27 | -1.04 | MCO ahead |
| 2025-07-10 | 93.97 | 103.53 | -0.88 | MCO ahead |
| 2025-07-09 | 94.23 | 102.82 | -0.75 | MCO ahead |
| 2025-07-08 | 93.68 | 102.16 | -0.75 | MCO ahead |
| 2025-07-07 | 93.65 | 102.85 | -0.85 | MCO ahead |
| 2025-07-03 | 92.84 | 103.40 | -1.05 | MCO ahead |
| 2025-07-02 | 93.04 | 101.77 | -0.81 | MCO ahead |
| 2025-07-01 | 93.60 | 102.87 | -0.88 | MCO ahead |
| 2025-06-30 | 91.98 | 102.69 | -1.10 | MCO ahead |
| 2025-06-27 | 90.83 | 99.91 | -0.90 | MCO ahead |
| 2025-06-26 | 90.77 | 98.58 | -0.73 | MCO ahead |
| 2025-06-25 | 91.50 | 98.61 | -0.62 | MCO ahead |
| 2025-06-24 | 92.84 | 100.11 | -0.63 | MCO ahead |
| 2025-06-23 | 90.46 | 97.50 | -0.63 | MCO ahead |
| 2025-06-20 | 90.68 | 96.22 | -0.42 | near the usual relationship |
| 2025-06-18 | 89.86 | 96.33 | -0.56 | MCO ahead |
| 2025-06-17 | 90.78 | 96.47 | -0.45 | near the usual relationship |
| 2025-06-16 | 94.84 | 97.64 | -0.01 | near the usual relationship |
| 2025-06-13 | 93.72 | 96.61 | -0.03 | near the usual relationship |
| 2025-06-12 | 95.38 | 98.47 | -0.05 | near the usual relationship |
| 2025-06-11 | 96.28 | 98.99 | +0.00 | near the usual relationship |
| 2025-06-10 | 96.43 | 99.30 | -0.02 | near the usual relationship |
| 2025-06-09 | 95.22 | 99.40 | -0.21 | near the usual relationship |
| 2025-06-06 | 95.15 | 100.10 | -0.32 | near the usual relationship |
| 2025-06-05 | 94.40 | 99.81 | -0.40 | near the usual relationship |
| 2025-06-04 | 94.68 | 99.40 | -0.30 | near the usual relationship |
| 2025-06-03 | 93.43 | 98.69 | -0.39 | near the usual relationship |
| 2025-06-02 | 92.70 | 98.25 | -0.44 | near the usual relationship |
| 2025-05-30 | 93.69 | 98.13 | -0.28 | near the usual relationship |
| 2025-05-29 | 93.28 | 98.60 | -0.41 | near the usual relationship |
| 2025-05-28 | 92.96 | 97.96 | -0.37 | near the usual relationship |
| 2025-05-27 | 91.63 | 98.52 | -0.65 | MCO ahead |
| 2025-05-23 | 92.98 | 96.15 | -0.11 | near the usual relationship |
| 2025-05-22 | 93.41 | 96.58 | -0.12 | near the usual relationship |
| 2025-05-21 | 91.68 | 96.79 | -0.41 | near the usual relationship |
| 2025-05-20 | 98.24 | 99.70 | +0.13 | near the usual relationship |
| 2025-05-19 | 99.49 | 100.75 | +0.16 | near the usual relationship |
| 2025-05-16 | 98.83 | 100.09 | +0.15 | near the usual relationship |
| 2025-05-15 | 97.58 | 99.77 | +0.02 | near the usual relationship |
| 2025-05-14 | 96.13 | 98.07 | +0.04 | near the usual relationship |
| 2025-05-13 | 97.08 | 99.23 | +0.01 | near the usual relationship |
| 2025-05-12 | 98.01 | 99.71 | +0.08 | near the usual relationship |
| 2025-05-09 | 95.72 | 96.36 | +0.22 | near the usual relationship |
| 2025-05-08 | 96.16 | 96.56 | +0.25 | near the usual relationship |
| 2025-05-07 | 94.35 | 95.78 | +0.10 | near the usual relationship |
| 2025-05-06 | 92.97 | 94.77 | +0.04 | near the usual relationship |
| 2025-05-05 | 93.04 | 95.13 | -0.01 | near the usual relationship |
| 2025-05-02 | 93.74 | 95.15 | +0.09 | near the usual relationship |
| 2025-05-01 | 92.42 | 92.51 | +0.28 | near the usual relationship |
| 2025-04-30 | 92.25 | 92.77 | +0.21 | near the usual relationship |
| 2025-04-29 | 91.73 | 91.51 | +0.32 | near the usual relationship |
| 2025-04-28 | 90.90 | 90.03 | +0.41 | near the usual relationship |
| 2025-04-25 | 90.95 | 89.80 | +0.46 | near the usual relationship |
| 2025-04-24 | 91.21 | 89.99 | +0.47 | near the usual relationship |
| 2025-04-23 | 88.41 | 88.19 | +0.32 | near the usual relationship |
| 2025-04-22 | 86.91 | 88.01 | +0.12 | near the usual relationship |
| 2025-04-21 | 76.35 | 84.61 | -1.11 | MCO ahead |
| 2025-04-17 | 78.46 | 86.98 | -1.12 | MCO ahead |
| 2025-04-16 | 77.76 | 87.15 | -1.27 | MCO ahead |
| 2025-04-15 | 79.99 | 89.07 | -1.20 | MCO ahead |
| 2025-04-14 | 79.55 | 89.60 | -1.36 | MCO ahead |
| 2025-04-11 | 78.10 | 87.71 | -1.33 | MCO ahead |
| 2025-04-10 | 77.21 | 86.60 | -1.32 | MCO ahead |
| 2025-04-09 | 79.59 | 89.79 | -1.40 | MCO ahead |
| 2025-04-08 | 72.87 | 81.21 | -1.25 | MCO ahead |
| 2025-04-07 | 74.01 | 81.48 | -1.10 | MCO ahead |
| 2025-04-04 | 74.50 | 82.39 | -1.16 | MCO ahead |
| 2025-04-03 | 82.20 | 90.57 | -1.12 | MCO ahead |
| 2025-04-02 | 87.79 | 96.40 | -1.09 | MCO ahead |
| 2025-04-01 | 86.48 | 95.97 | -1.23 | MCO ahead |
| 2025-03-31 | 86.37 | 95.34 | -1.16 | MCO ahead |
| 2025-03-28 | 85.23 | 94.46 | -1.22 | MCO ahead |
| 2025-03-27 | 86.46 | 96.01 | -1.26 | MCO ahead |
| 2025-03-26 | 85.72 | 96.24 | -1.40 | MCO ahead |
| 2025-03-25 | 86.29 | 97.70 | -1.52 | MCO ahead |
| 2025-03-24 | 87.01 | 96.05 | -1.20 | MCO ahead |
| 2025-03-21 | 86.53 | 94.07 | -1.02 | MCO ahead |
| 2025-03-20 | 86.33 | 94.13 | -1.06 | MCO ahead |
| 2025-03-19 | 85.91 | 94.24 | -1.15 | MCO ahead |
| 2025-03-18 | 83.56 | 92.15 | -1.22 | MCO ahead |
| 2025-03-17 | 85.20 | 92.86 | -1.08 | MCO ahead |
| 2025-03-14 | 83.66 | 91.48 | -1.13 | MCO ahead |
| 2025-03-13 | 83.95 | 89.63 | -0.84 | MCO ahead |
| 2025-03-12 | 84.89 | 90.51 | -0.83 | MCO ahead |
| 2025-03-11 | 84.91 | 90.87 | -0.88 | MCO ahead |
| 2025-03-10 | 88.63 | 92.19 | -0.55 | MCO ahead |
| 2025-03-07 | 90.32 | 94.48 | -0.62 | MCO ahead |
| 2025-03-06 | 87.15 | 96.27 | -1.27 | MCO ahead |
| 2025-03-05 | 86.85 | 98.71 | -1.61 | MCO ahead |
| 2025-03-04 | 86.22 | 98.53 | -1.68 | MCO ahead |
| 2025-03-03 | 86.71 | 102.77 | -2.11 | MCO ahead |
| 2025-02-28 | 86.95 | 103.17 | -2.14 | MCO ahead |
| 2025-02-27 | 86.04 | 100.90 | -2.02 | MCO ahead |
| 2025-02-26 | 86.39 | 102.02 | -2.12 | MCO ahead |
| 2025-02-25 | 87.02 | 102.75 | -2.14 | MCO ahead |
| 2025-02-24 | 85.06 | 102.56 | -2.41 | MCO ahead |
| 2025-02-21 | 84.41 | 102.42 | -2.52 | MCO ahead |
| 2025-02-20 | 85.54 | 104.74 | -2.66 | MCO ahead |
| 2025-02-19 | 86.26 | 106.31 | -2.77 | MCO ahead |
| 2025-02-18 | 87.47 | 106.37 | -2.65 | MCO ahead |
| 2025-02-14 | 88.48 | 107.04 | -2.63 | MCO ahead |
| 2025-02-13 | 88.96 | 107.99 | -2.72 | MCO ahead |
| 2025-02-12 | 90.20 | 103.48 | -2.06 | MCO ahead |
| 2025-02-11 | 89.72 | 104.94 | -2.33 | MCO ahead |
| 2025-02-10 | 89.68 | 103.23 | -2.16 | MCO ahead |
| 2025-02-07 | 88.05 | 103.04 | -2.40 | MCO ahead |
| 2025-02-06 | 87.76 | 102.94 | -2.47 | MCO ahead |
| 2025-02-05 | 95.83 | 101.51 | -1.18 | MCO ahead |
| 2025-02-04 | 94.60 | 100.96 | -1.28 | MCO ahead |
| 2025-02-03 | 94.87 | 101.64 | -1.34 | MCO ahead |
| 2025-01-31 | 97.44 | 102.25 | -1.08 | MCO ahead |
| 2025-01-30 | 98.71 | 102.20 | -0.92 | MCO ahead |
| 2025-01-29 | 96.17 | 100.38 | -1.03 | MCO ahead |
| 2025-01-28 | 96.94 | 100.93 | -1.01 | MCO ahead |
| 2025-01-27 | 97.50 | 101.56 | -1.02 | MCO ahead |
| 2025-01-24 | 95.33 | 100.24 | -1.15 | MCO ahead |
| 2025-01-23 | 95.35 | 99.52 | -1.06 | MCO ahead |
| 2025-01-22 | 96.41 | 99.22 | -0.89 | MCO ahead |
| 2025-01-21 | 96.55 | 99.24 | -0.88 | MCO ahead |
| 2025-01-17 | 93.22 | 97.42 | -1.10 | MCO ahead |
| 2025-01-16 | 93.71 | 98.06 | -1.13 | MCO ahead |
| 2025-01-15 | 93.45 | 96.50 | -0.96 | MCO ahead |
| 2025-01-14 | 89.49 | 94.70 | -1.29 | MCO ahead |
| 2025-01-13 | 87.79 | 93.74 | -1.42 | MCO ahead |
| 2025-01-10 | 86.65 | 92.70 | -1.46 | MCO ahead |
| 2025-01-08 | 87.99 | 96.65 | -1.83 | MCO ahead |
| 2025-01-07 | 87.06 | 94.99 | -1.76 | MCO ahead |
| 2025-01-06 | 88.22 | 96.86 | -1.86 | MCO ahead |
| 2025-01-03 | 89.86 | 98.09 | -1.80 | MCO ahead |
| 2025-01-02 | 89.06 | 96.80 | -1.76 | MCO ahead |
| 2024-12-31 | 90.38 | 96.91 | -1.60 | MCO ahead |
| 2024-12-30 | 90.51 | 96.94 | -1.60 | MCO ahead |
| 2024-12-27 | 90.78 | 97.60 | -1.67 | MCO ahead |
| 2024-12-26 | 91.78 | 98.51 | -1.66 | MCO ahead |
| 2024-12-24 | 92.65 | 98.35 | -1.52 | MCO ahead |
| 2024-12-23 | 91.67 | 96.99 | -1.49 | MCO ahead |
| 2024-12-20 | 91.65 | 95.47 | -1.29 | MCO ahead |
| 2024-12-19 | 89.95 | 94.60 | -1.43 | MCO ahead |
| 2024-12-18 | 91.08 | 96.24 | -1.51 | MCO ahead |
| 2024-12-17 | 97.05 | 99.42 | -1.08 | MCO ahead |
| 2024-12-16 | 96.99 | 100.15 | -1.21 | MCO ahead |
| 2024-12-13 | 94.26 | 100.11 | -1.62 | MCO ahead |
| 2024-12-12 | 94.08 | 101.29 | -1.83 | MCO ahead |
| 2024-12-11 | 93.17 | 101.86 | -2.07 | MCO ahead |
| 2024-12-10 | 92.40 | 100.61 | -2.04 | MCO ahead |
| 2024-12-09 | 93.93 | 100.42 | -1.79 | MCO ahead |
| 2024-12-06 | 94.62 | 101.29 | -1.83 | MCO ahead |
| 2024-12-05 | 92.48 | 100.55 | -2.08 | MCO ahead |
| 2024-12-04 | 93.47 | 101.99 | -2.16 | MCO ahead |
| 2024-12-03 | 92.64 | 101.07 | -2.18 | MCO ahead |
| 2024-12-02 | 91.74 | 101.83 | -2.48 | MCO ahead |
| 2024-11-29 | 92.76 | 102.36 | -2.43 | MCO ahead |
| 2024-11-27 | 92.62 | 102.54 | -2.51 | MCO ahead |
| 2024-11-26 | 91.83 | 102.29 | -2.65 | MCO ahead |
| 2024-11-25 | 93.58 | 101.14 | -2.20 | MCO ahead |
| 2024-11-22 | 89.93 | 98.40 | -2.42 | MCO ahead |
| 2024-11-21 | 89.68 | 97.84 | -2.40 | MCO ahead |
| 2024-11-20 | 87.62 | 97.16 | -2.71 | MCO ahead |
| 2024-11-19 | 86.89 | 95.97 | -2.68 | MCO ahead |
| 2024-11-18 | 86.99 | 96.62 | -2.81 | MCO ahead |
| 2024-11-15 | 88.04 | 96.90 | -2.69 | MCO ahead |
| 2024-11-14 | 92.99 | 98.70 | -2.09 | MCO ahead |
| 2024-11-13 | 94.32 | 98.15 | -1.74 | MCO ahead |
| 2024-11-12 | 94.96 | 97.34 | -1.47 | MCO ahead |
| 2024-11-11 | 96.10 | 97.95 | -1.36 | MCO ahead |
| 2024-11-08 | 96.08 | 97.69 | -1.32 | MCO ahead |
| 2024-11-07 | 95.57 | 95.31 | -0.98 | MCO ahead |
| 2024-11-06 | 93.69 | 94.41 | -1.14 | MCO ahead |
| 2024-11-05 | 95.62 | 94.62 | -0.84 | MCO ahead |
| 2024-11-04 | 93.87 | 93.85 | -1.00 | MCO ahead |
| 2024-11-01 | 93.76 | 93.43 | -0.93 | MCO ahead |
| 2024-10-31 | 93.98 | 92.95 | -0.80 | MCO ahead |
| 2024-10-30 | 95.51 | 93.96 | -0.70 | MCO ahead |
| 2024-10-29 | 95.21 | 94.28 | -0.80 | MCO ahead |
| 2024-10-28 | 95.76 | 94.61 | -0.75 | MCO ahead |
| 2024-10-25 | 95.71 | 94.75 | -0.77 | MCO ahead |
| 2024-10-24 | 96.37 | 95.59 | -0.79 | MCO ahead |
| 2024-10-23 | 96.37 | 95.99 | -0.85 | MCO ahead |
| 2024-10-22 | 96.49 | 95.76 | -0.80 | MCO ahead |
| 2024-10-21 | 97.82 | 99.69 | -1.21 | MCO ahead |
| 2024-10-18 | 100.00 | 100.00 | -0.91 | MCO ahead |
One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Apr 22, 2025 (EFX +13.8%, MCO +4.0%); Jul 22, 2025 (EFX -8.2%, MCO -0.2%); Oct 2, 2025 (EFX -8.5%, MCO +0.5%); Feb 10, 2026 (EFX +1.6%, MCO -6.8%); Apr 22, 2026 (EFX -7.2%, MCO +1.6%); Oct 20, 2026 (EFX +11.3%, MCO -1.2%).
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 Oct 20, 2026: -8.89% per trade on average after costs, 0 won.
| Legs | Entered | Exited | Why | Days | Before costs | Costs + borrow | After costs |
|---|---|---|---|---|---|---|---|
| Long MCO · Short EFX | Dec 9, 2020 | May 6, 2021 | divergence stop | 148 | -$1,286.68 | -$68.91 | -$1,364.26 (-13.64%) |
| Long EFX · Short MCO | Oct 30, 2019 | Dec 11, 2019 | divergence stop | 42 | -$365.96 | -$50.22 | -$413.96 (-4.14%) |
Per $10,000 a leg. A replay on today's companies cannot prove an edge.
The companies
EFX and MCO at a glance
EFX Equifax Inc.
- Listing
- NYSE · SEC CIK 33185
- Industry
- Finance: Consumer Services · SIC 7320 Services-Consumer Credit Reporting, Collection Agencies
- Market value
- $18.6B
- Price history
- 2,521 daily closes, Oct 12, 2016 to Oct 22, 2026
MCO Moody's Corporation
- Listing
- NYSE · SEC CIK 1059556
- Industry
- Finance: Consumer Services · SIC 7320 Services-Consumer Credit Reporting, Collection Agencies
- Market value
- $83.4B
- 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 EFX and MCO
| Pair | Status | Ahead now | Industry |
|---|---|---|---|
| SPGI / EFX | Watchlist | neither | SIC 7320 Services-Consumer Credit Reporting, Collection Agencies |
| SPGI / MCO | Watchlist | neither | Finance: Consumer Services |
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.
