Medical Specialities

The Cigna Group vs Elevance Health Inc.

WatchlistCI / ELVPrices through Oct 22, 2026

Why these are rivals: #2 and #3 by market value ($93B vs $79B) in Nasdaq's "Medical Specialities" industry; SEC SIC 6324 / 6324 (same major group); #2 and #3 by market value ($93B vs $79B) with SEC SIC 6324 (Hospital & Medical Service Plans).

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: 0.46 (needs >= 0.60)
  • Mean reversion: ADF t-statistic of the spread: -1.90 (needs <= -2.873 (5% critical value))
Business leadership

CI is the larger business

Annual revenue reported to the SEC. Scale, not market share.

YearCIELVLarger
2025$274.9B$199.1BCI
2024$247.1B$177.0BCI
2023$195.3B$171.3BCI
2022$180.5B$156.6BCI
2021$174.1B$138.6BCI
2020$160.4B$121.9BCI

CI led in every year with figures for both. Market value: CI $78.9B, ELV $93.3B.

Stock leadership

ELV is ahead now

Measured against the pair's own last 252 trading days.

ELV leads CI by 0.87 standard deviations: +9.1% over its usual price ratio. 3 lead switches in the last year.

Price change3 mo6 mo12 mo
CI+9.1%+12.9%+2.7%
ELV+17.9%+28.6%+27.3%
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: 0.46 (needs >= 0.60)
Fail
Mean reversion: ADF t-statistic of the spread: -1.90 (needs <= -2.873 (5% critical value))
Pass
Speed: half-life of the spread, sessions: 25.66 (needs <= 63)
Data
Both stocks current
The twins over two years

Prices side by side, and the gap between them

CI The Cigna Group ELV Elevance Health Inc.Price index, 100 = 2024-10-18. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
80100Oct 2024Oct 2025Oct 2026CI 94ELV 103
Spread z-score: CI relative to ELV, against the 252 sessions before each day. Above 0: CI ahead; below 0: ELV ahead. Lines at +/-2 (idea) and +/-4 (stop).
-4stop-2idea0+2idea+4stopOct 2024Oct 2025Oct 2026
Data table (504 sessions)
DateCI indexELV indexzAhead
2026-10-2294.01103.37-0.87ELV ahead
2026-10-2190.59100.78-0.99ELV ahead
2026-10-2091.25102.18-1.07ELV ahead
2026-10-1988.8499.87-1.11ELV ahead
2026-10-1689.9799.42-0.95ELV ahead
2026-10-1588.9399.46-1.08ELV ahead
2026-10-1486.1899.38-1.40ELV ahead
2026-10-1384.0998.72-1.59ELV ahead
2026-10-1284.3397.99-1.50ELV ahead
2026-10-0984.0695.81-1.32ELV ahead
2026-10-0883.6493.08-1.09ELV ahead
2026-10-0782.8993.86-1.27ELV ahead
2026-10-0681.6692.88-1.33ELV ahead
2026-10-0580.7491.58-1.31ELV ahead
2026-10-0280.5189.71-1.14ELV ahead
2026-10-0179.7588.60-1.12ELV ahead
2026-09-3080.9090.26-1.17ELV ahead
2026-09-2981.9291.17-1.15ELV ahead
2026-09-2880.9091.60-1.34ELV ahead
2026-09-2580.9691.95-1.38ELV ahead
2026-09-2479.0292.45-1.70ELV ahead
2026-09-2379.8492.52-1.61ELV ahead
2026-09-2281.4793.42-1.52ELV ahead
2026-09-2181.6995.02-1.68ELV ahead
2026-09-1881.9395.40-1.70ELV ahead
2026-09-1782.1496.17-1.77ELV ahead
2026-09-1683.4795.77-1.57ELV ahead
2026-09-1585.9896.93-1.40ELV ahead
2026-09-1486.3298.48-1.53ELV ahead
2026-09-1183.5697.20-1.73ELV ahead
2026-09-1083.6096.70-1.69ELV ahead
2026-09-0982.7992.14-1.31ELV ahead
2026-09-0882.0993.31-1.53ELV ahead
2026-09-0484.0894.60-1.44ELV ahead
2026-09-0385.2096.29-1.50ELV ahead
2026-09-0284.1894.21-1.41ELV ahead
2026-09-0184.2493.56-1.34ELV ahead
2026-08-3182.1791.13-1.34ELV ahead
2026-08-2883.0091.56-1.30ELV ahead
2026-08-2782.6492.65-1.46ELV ahead
2026-08-2683.5993.45-1.45ELV ahead
2026-08-2583.1392.59-1.42ELV ahead
2026-08-2483.4793.47-1.48ELV ahead
2026-08-2182.5992.98-1.54ELV ahead
2026-08-2081.6791.99-1.56ELV ahead
2026-08-1982.5792.50-1.52ELV ahead
2026-08-1882.8992.46-1.49ELV ahead
2026-08-1781.9490.59-1.41ELV ahead
2026-08-1484.1092.93-1.42ELV ahead
2026-08-1382.7492.44-1.54ELV ahead
2026-08-1282.5692.66-1.59ELV ahead
2026-08-1181.5190.62-1.51ELV ahead
2026-08-1082.8692.32-1.55ELV ahead
2026-08-0784.0791.51-1.33ELV ahead
2026-08-0681.9290.86-1.52ELV ahead
2026-08-0580.5190.82-1.70ELV ahead
2026-08-0481.5687.75-1.26ELV ahead
2026-08-0383.9588.86-1.11ELV ahead
2026-07-3183.0587.25-1.04ELV ahead
2026-07-3085.6187.38-0.77ELV ahead
2026-07-2988.2487.28-0.48near the usual relationship
2026-07-2889.6089.54-0.58ELV ahead
2026-07-2786.6187.83-0.72ELV ahead
2026-07-2486.1887.68-0.76ELV ahead
2026-07-2385.2188.05-0.91ELV ahead
2026-07-2284.7890.32-1.19ELV ahead
2026-07-2186.4691.33-1.12ELV ahead
2026-07-2084.5188.73-1.08ELV ahead
2026-07-1783.7686.61-0.94ELV ahead
2026-07-1684.4786.55-0.87ELV ahead
2026-07-1588.6390.61-0.85ELV ahead
2026-07-1490.2899.08-1.51ELV ahead
2026-07-1390.6398.70-1.45ELV ahead
2026-07-1087.3496.62-1.61ELV ahead
2026-07-0986.8597.59-1.77ELV ahead
2026-07-0886.2396.59-1.76ELV ahead
2026-07-0785.3097.23-1.95ELV ahead
2026-07-0683.9294.75-1.88ELV ahead
2026-07-0285.6597.01-1.93ELV ahead
2026-07-0182.4696.62-2.28ELV ahead
2026-06-3082.0589.78-1.65ELV ahead
2026-06-2982.9690.08-1.59ELV ahead
2026-06-2684.1691.74-1.64ELV ahead
2026-06-2583.8989.91-1.49ELV ahead
2026-06-2483.1789.14-1.50ELV ahead
2026-06-2384.2591.72-1.67ELV ahead
2026-06-2283.9591.65-1.71ELV ahead
2026-06-1883.1290.19-1.67ELV ahead
2026-06-1784.8590.83-1.55ELV ahead
2026-06-1686.8792.35-1.49ELV ahead
2026-06-1587.4593.30-1.53ELV ahead
2026-06-1288.6993.80-1.46ELV ahead
2026-06-1187.7592.67-1.45ELV ahead
2026-06-1088.0493.92-1.56ELV ahead
2026-06-0987.8098.53-2.10ELV ahead
2026-06-0886.1997.07-2.16ELV ahead
2026-06-0586.1596.46-2.12ELV ahead
2026-06-0483.5495.05-2.32ELV ahead
2026-06-0380.5790.83-2.25ELV ahead
2026-06-0281.1790.31-2.14ELV ahead
2026-06-0181.6093.47-2.49ELV ahead
2026-05-2982.5691.28-2.13ELV ahead
2026-05-2884.6291.17-1.87ELV ahead
2026-05-2785.0490.88-1.79ELV ahead
2026-05-2683.5890.04-1.90ELV ahead
2026-05-2285.1991.62-1.90ELV ahead
2026-05-2183.9390.49-1.94ELV ahead
2026-05-2084.2691.98-2.10ELV ahead
2026-05-1986.6993.38-1.96ELV ahead
2026-05-1885.3291.48-1.92ELV ahead
2026-05-1584.9091.16-1.96ELV ahead
2026-05-1487.7892.09-1.70ELV ahead
2026-05-1389.5092.77-1.56ELV ahead
2026-05-1288.8491.30-1.47ELV ahead
2026-05-1186.0388.62-1.51ELV ahead
2026-05-0885.7387.77-1.44ELV ahead
2026-05-0784.5486.57-1.45ELV ahead
2026-05-0683.9286.99-1.60ELV ahead
2026-05-0582.0485.68-1.70ELV ahead
2026-05-0483.1486.33-1.65ELV ahead
2026-05-0184.2086.51-1.53ELV ahead
2026-04-3086.4887.38-1.34ELV ahead
2026-04-2987.0087.43-1.28ELV ahead
2026-04-2884.8084.21-1.13ELV ahead
2026-04-2784.1082.67-1.01ELV ahead
2026-04-2482.0480.03-0.92ELV ahead
2026-04-2383.2580.39-0.80ELV ahead
2026-04-2281.7676.19-0.37near the usual relationship
2026-04-2182.3576.17-0.27near the usual relationship
2026-04-2083.3174.14+0.20near the usual relationship
2026-04-1782.9374.99+0.01near the usual relationship
2026-04-1682.2573.32+0.19near the usual relationship
2026-04-1579.9572.24+0.03near the usual relationship
2026-04-1481.1372.74+0.13near the usual relationship
2026-04-1381.8873.37+0.14near the usual relationship
2026-04-1080.7372.32+0.16near the usual relationship
2026-04-0982.8773.56+0.27near the usual relationship
2026-04-0882.6173.87+0.19near the usual relationship
2026-04-0781.6272.39+0.29near the usual relationship
2026-04-0682.0570.25+0.69CI ahead
2026-04-0280.3669.81+0.53CI ahead
2026-04-0179.5669.29+0.51CI ahead
2026-03-3179.3967.96+0.71CI ahead
2026-03-3076.8166.11+0.66CI ahead
2026-03-2777.9666.48+0.77CI ahead
2026-03-2680.9868.31+0.89CI ahead
2026-03-2580.4668.74+0.76CI ahead
2026-03-2479.1367.40+0.80CI ahead
2026-03-2377.8267.14+0.66CI ahead
2026-03-2078.2367.66+0.64CI ahead
2026-03-1978.7467.59+0.73CI ahead
2026-03-1878.7568.47+0.60CI ahead
2026-03-1778.4168.66+0.53CI ahead
2026-03-1679.8767.80+0.87CI ahead
2026-03-1379.5267.70+0.85CI ahead
2026-03-1279.1366.83+0.94CI ahead
2026-03-1177.6467.27+0.67CI ahead
2026-03-1078.1165.62+1.01CI ahead
2026-03-0980.2665.17+1.39CI ahead
2026-03-0680.8467.24+1.14CI ahead
2026-03-0583.7166.50+1.65CI ahead
2026-03-0484.7467.66+1.61CI ahead
2026-03-0384.5065.94+1.89CI ahead
2026-03-0286.5668.27+1.79CI ahead
2026-02-2786.2674.29+0.82CI ahead
2026-02-2685.9674.99+0.69CI ahead
2026-02-2584.6576.73+0.27near the usual relationship
2026-02-2483.6375.94+0.25near the usual relationship
2026-02-2384.2877.97+0.05near the usual relationship
2026-02-2083.4379.61-0.28near the usual relationship
2026-02-1985.1080.83-0.23near the usual relationship
2026-02-1886.3580.38+0.00near the usual relationship
2026-02-1786.5280.04+0.07near the usual relationship
2026-02-1386.7480.51+0.04near the usual relationship
2026-02-1285.6078.01+0.24near the usual relationship
2026-02-1187.7276.67+0.70CI ahead
2026-02-1085.6675.59+0.60CI ahead
2026-02-0987.6276.03+0.79CI ahead
2026-02-0686.9278.69+0.34near the usual relationship
2026-02-0584.6877.13+0.28near the usual relationship
2026-02-0480.8779.07-0.47near the usual relationship
2026-02-0381.9678.62-0.26near the usual relationship
2026-02-0280.8279.35-0.50ELV ahead
2026-01-3081.5880.26-0.52ELV ahead
2026-01-2980.7480.55-0.66ELV ahead
2026-01-2881.0779.36-0.46near the usual relationship
2026-01-2780.3874.96+0.05near the usual relationship
2026-01-2683.4687.50-1.17ELV ahead
2026-01-2383.1086.14-1.05ELV ahead
2026-01-2283.4586.41-1.03ELV ahead
2026-01-2181.8285.86-1.17ELV ahead
2026-01-2080.7385.21-1.23ELV ahead
2026-01-1681.0187.02-1.41ELV ahead
2026-01-1582.7288.66-1.39ELV ahead
2026-01-1480.6586.55-1.40ELV ahead
2026-01-1380.9086.05-1.31ELV ahead
2026-01-1282.1587.05-1.27ELV ahead
2026-01-0983.0286.55-1.10ELV ahead
2026-01-0884.5087.00-0.97ELV ahead
2026-01-0783.0785.12-0.92ELV ahead
2026-01-0684.7586.21-0.84ELV ahead
2026-01-0584.5184.39-0.64ELV ahead
2026-01-0283.0782.24-0.55ELV ahead
2025-12-3181.9181.38-0.58ELV ahead
2025-12-3082.2980.97-0.48near the usual relationship
2025-12-2982.1580.87-0.49near the usual relationship
2025-12-2682.2981.22-0.51ELV ahead
2025-12-2481.8079.69-0.37near the usual relationship
2025-12-2381.4779.68-0.41near the usual relationship
2025-12-2282.0279.92-0.37near the usual relationship
2025-12-1980.9279.09-0.40near the usual relationship
2025-12-1881.5580.00-0.43near the usual relationship
2025-12-1781.5080.31-0.47near the usual relationship
2025-12-1682.1881.69-0.56ELV ahead
2025-12-1582.4983.73-0.77ELV ahead
2025-12-1281.7683.36-0.81ELV ahead
2025-12-1181.0383.62-0.94ELV ahead
2025-12-1078.1579.17-0.76ELV ahead
2025-12-0978.1976.56-0.41near the usual relationship
2025-12-0878.4376.75-0.41near the usual relationship
2025-12-0579.0076.78-0.34near the usual relationship
2025-12-0479.8977.42-0.31near the usual relationship
2025-12-0380.4576.78-0.16near the usual relationship
2025-12-0281.5876.82-0.02near the usual relationship
2025-12-0181.4276.53+0.00near the usual relationship
2025-11-2882.5278.52-0.13near the usual relationship
2025-11-2682.8478.58-0.10near the usual relationship
2025-11-2582.8078.06-0.03near the usual relationship
2025-11-2480.7976.51-0.08near the usual relationship
2025-11-2182.7674.69+0.41near the usual relationship
2025-11-2080.2472.89+0.35near the usual relationship
2025-11-1980.9573.44+0.36near the usual relationship
2025-11-1881.1375.34+0.13near the usual relationship
2025-11-1780.7576.82-0.11near the usual relationship
2025-11-1480.2675.64-0.02near the usual relationship
2025-11-1380.6276.21-0.05near the usual relationship
2025-11-1280.5476.06-0.04near the usual relationship
2025-11-1179.7673.18+0.26near the usual relationship
2025-11-1076.8370.52+0.26near the usual relationship
2025-11-0778.7473.77+0.06near the usual relationship
2025-11-0676.3072.99-0.15near the usual relationship
2025-11-0577.2673.84-0.13near the usual relationship
2025-11-0478.7773.50+0.11near the usual relationship
2025-11-0376.9772.70-0.01near the usual relationship
2025-10-3172.7473.64-0.70ELV ahead
2025-10-3073.5474.74-0.74ELV ahead
2025-10-2989.0278.08+0.74CI ahead
2025-10-2891.7978.79+0.96CI ahead
2025-10-2792.0279.51+0.90CI ahead
2025-10-2489.8279.47+0.67CI ahead
2025-10-2390.7980.39+0.67CI ahead
2025-10-2291.6380.14+0.80CI ahead
2025-10-2191.5281.19+0.66CI ahead
2025-10-2091.3282.19+0.52CI ahead
2025-10-1789.0780.96+0.43near the usual relationship
2025-10-1686.6380.83+0.18near the usual relationship
2025-10-1587.6781.13+0.26near the usual relationship
2025-10-1489.9281.36+0.49near the usual relationship
2025-10-1387.9281.58+0.25near the usual relationship
2025-10-1089.5082.00+0.38near the usual relationship
2025-10-0991.1183.14+0.42near the usual relationship
2025-10-0891.3084.11+0.34near the usual relationship
2025-10-0791.4182.99+0.48near the usual relationship
2025-10-0690.1881.24+0.56CI ahead
2025-10-0392.5681.37+0.80CI ahead
2025-10-0288.3978.98+0.65CI ahead
2025-10-0186.8077.22+0.70CI ahead
2025-09-3085.7975.01+0.87CI ahead
2025-09-2985.3174.21+0.92CI ahead
2025-09-2685.1773.96+0.95CI ahead
2025-09-2584.5473.52+0.94CI ahead
2025-09-2486.7475.77+0.90CI ahead
2025-09-2386.3375.15+0.94CI ahead
2025-09-2285.9073.80+1.07CI ahead
2025-09-1986.4272.83+1.25CI ahead
2025-09-1887.4373.30+1.31CI ahead
2025-09-1788.2771.61+1.61CI ahead
2025-09-1687.5671.96+1.51CI ahead
2025-09-1588.4371.25+1.70CI ahead
2025-09-1290.1172.37+1.74CI ahead
2025-09-1191.0373.10+1.76CI ahead
2025-09-1090.0171.21+1.91CI ahead
2025-09-0989.8873.15+1.66CI ahead
2025-09-0889.5571.54+1.85CI ahead
2025-09-0590.8772.81+1.83CI ahead
2025-09-0490.4971.51+1.98CI ahead
2025-09-0389.4374.65+1.49CI ahead
2025-09-0289.5074.83+1.49CI ahead
2025-08-2989.5473.97+1.61CI ahead
2025-08-2888.9972.06+1.80CI ahead
2025-08-2789.2771.92+1.87CI ahead
2025-08-2689.3871.97+1.88CI ahead
2025-08-2589.5172.89+1.80CI ahead
2025-08-2290.5873.48+1.84CI ahead
2025-08-2189.5771.87+1.96CI ahead
2025-08-2090.6571.96+2.07CI ahead
2025-08-1989.9172.43+1.96CI ahead
2025-08-1888.7971.81+1.93CI ahead
2025-08-1588.3571.86+1.90CI ahead
2025-08-1486.4168.58+2.14CI ahead
2025-08-1385.4568.35+2.09CI ahead
2025-08-1283.4767.90+1.95CI ahead
2025-08-1182.4567.50+1.91CI ahead
2025-08-0881.8268.25+1.76CI ahead
2025-08-0780.6565.81+1.97CI ahead
2025-08-0680.3564.14+2.19CI ahead
2025-08-0580.5864.17+2.24CI ahead
2025-08-0479.3463.82+2.17CI ahead
2025-08-0178.0463.76+2.05CI ahead
2025-07-3179.5865.71+1.98CI ahead
2025-07-3088.6568.15+2.68CI ahead
2025-07-2986.9667.03+2.70CI ahead
2025-07-2887.0266.39+2.85CI ahead
2025-07-2588.2167.11+2.93CI ahead
2025-07-2487.4865.10+3.21CI ahead
2025-07-2390.5868.85+3.07CI ahead
2025-07-2289.3065.40+3.53CI ahead
2025-07-2187.7464.18+3.65CI ahead
2025-07-1888.0164.32+3.75CI ahead
2025-07-1788.7770.21+2.96CI ahead
2025-07-1691.0279.98+1.84CI ahead
2025-07-1590.0178.05+2.00CI ahead
2025-07-1490.2078.94+1.92CI ahead
2025-07-1190.2679.08+1.92CI ahead
2025-07-1091.9080.29+1.97CI ahead
2025-07-0992.2080.40+2.00CI ahead
2025-07-0892.8681.12+2.00CI ahead
2025-07-0793.3480.53+2.15CI ahead
2025-07-0395.1680.75+2.35CI ahead
2025-07-0295.3581.31+2.32CI ahead
2025-07-0199.5291.87+1.48CI ahead
2025-06-3098.3990.29+1.55CI ahead
2025-06-2797.1288.56+1.63CI ahead
2025-06-2698.2186.63+2.01CI ahead
2025-06-2594.0586.79+1.54CI ahead
2025-06-2494.2987.38+1.50CI ahead
2025-06-2394.3486.45+1.64CI ahead
2025-06-2093.5686.94+1.50CI ahead
2025-06-1893.5787.26+1.47CI ahead
2025-06-1793.0187.10+1.44CI ahead
2025-06-1693.5887.41+1.48CI ahead
2025-06-1394.4689.27+1.36CI ahead
2025-06-1293.8689.66+1.26CI ahead
2025-06-1192.3288.43+1.24CI ahead
2025-06-1093.3489.12+1.28CI ahead
2025-06-0992.6890.45+1.05CI ahead
2025-06-0692.9191.32+0.99CI ahead
2025-06-0592.5789.29+1.19CI ahead
2025-06-0492.3088.23+1.30CI ahead
2025-06-0392.7687.97+1.39CI ahead
2025-06-0293.7587.53+1.57CI ahead
2025-05-3094.2489.11+1.45CI ahead
2025-05-2992.8788.34+1.40CI ahead
2025-05-2892.5287.74+1.44CI ahead
2025-05-2793.8387.28+1.66CI ahead
2025-05-2394.0486.42+1.81CI ahead
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One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Jan 30, 2025 (CI -6.7%, ELV -0.2%); May 12, 2025 (CI -5.3%, ELV +3.0%); Jul 2, 2025 (CI -4.2%, ELV -11.5%); Jul 17, 2025 (CI -2.5%, ELV -12.2%); Oct 30, 2025 (CI -17.4%, ELV -4.3%); Jan 27, 2026 (CI -3.7%, ELV -14.3%). Upcoming earnings: CI 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

CI and ELV at a glance

CI The Cigna Group

Listing
NYSE · SEC CIK 1739940
Industry
Medical Specialities · SIC 6324 Hospital & Medical Service Plans
Market value
$78.9B
Price history
2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

ELV Elevance Health Inc.

Listing
NYSE · SEC CIK 1156039
Industry
Medical Specialities · SIC 6324 Hospital & Medical Service Plans
Market value
$93.3B
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 →
PairStatusAhead nowIndustry
UNH / CIWatchlistUNH by 0.53 sdMedical Specialities
UNH / ELVWatchlistELV by 0.29 sdMedical Specialities

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Paper 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.