SIC 7373 Services-Computer Integrated Systems Design

CACI International Inc. vs Leidos Holdings Inc.

WatchlistCACI / LDOSPrices through Oct 22, 2026

Why these are rivals: #2 and #3 by market value ($16B vs $14B) with SEC SIC 7373 (Services-Computer Integrated Systems Design).

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: -1.27 (needs <= -2.873 (5% critical value))
  • Speed: half-life of the spread, sessions: 75.29 (needs <= 63)
Business leadership

LDOS is the larger business

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

YearCACILDOSLarger
2025$8.6B$17.2BLDOS
2024$7.7B$16.7BLDOS
2023$6.7B$15.4BLDOS
2022$6.2B$14.4BLDOS
2021$6.0B$13.7BLDOS
2020$5.7B$12.3BLDOS

LDOS led in every year with figures for both. Market value: CACI $13.6B, LDOS $15.8B.

Stock leadership

CACI is ahead now

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

CACI leads LDOS by 1.10 standard deviations: +21.4% over its usual price ratio. 1 lead switch in the last year.

Price change3 mo6 mo12 mo
CACI+27.2%+17.6%+16.0%
LDOS+20.1%-8.7%-30.2%
Relationship

Not a measured twin today

Only these tests can make a pair tradable on paper.

Pass
Aligned sessions: 2515 (needs >= 254)
Pass
Co-movement: daily return correlation, 252 sessions: 0.64 (needs >= 0.60)
Fail
Mean reversion: ADF t-statistic of the spread: -1.27 (needs <= -2.873 (5% critical value))
Fail
Speed: half-life of the spread, sessions: 75.29 (needs <= 63)
Data
Both stocks current
The twins over two years

Prices side by side, and the gap between them

CACI CACI International Inc. LDOS Leidos Holdings Inc.Price index, 100 = 2024-10-18. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
6080100120Oct 2024Oct 2025Oct 2026CACI 117LDOS 79
Spread z-score: CACI relative to LDOS, against the 252 sessions before each day. Above 0: CACI ahead; below 0: LDOS ahead. Lines at +/-2 (idea) and +/-4 (stop).
-4stop-2idea0+2idea+4stopOct 2024Oct 2025Oct 2026
Data table (504 sessions)
DateCACI indexLDOS indexzAhead
2026-10-22116.5579.48+1.10CACI ahead
2026-10-21117.3376.23+1.38CACI ahead
2026-10-20114.3975.31+1.31CACI ahead
2026-10-19116.0374.36+1.47CACI ahead
2026-10-16115.6373.65+1.52CACI ahead
2026-10-15115.0773.15+1.54CACI ahead
2026-10-14113.6971.14+1.64CACI ahead
2026-10-13114.7570.61+1.75CACI ahead
2026-10-12115.6471.73+1.72CACI ahead
2026-10-09114.9471.78+1.69CACI ahead
2026-10-08112.8270.33+1.71CACI ahead
2026-10-07109.5266.98+1.83CACI ahead
2026-10-06112.8668.84+1.87CACI ahead
2026-10-05117.4970.46+1.98CACI ahead
2026-10-02115.7669.45+1.99CACI ahead
2026-10-01118.0371.95+1.92CACI ahead
2026-09-30114.6571.87+1.78CACI ahead
2026-09-29114.4672.62+1.72CACI ahead
2026-09-28116.0272.17+1.85CACI ahead
2026-09-25116.3872.92+1.82CACI ahead
2026-09-24116.1072.76+1.84CACI ahead
2026-09-23116.0773.55+1.79CACI ahead
2026-09-22115.4272.74+1.84CACI ahead
2026-09-21119.1275.64+1.81CACI ahead
2026-09-18117.9975.32+1.79CACI ahead
2026-09-17119.5277.25+1.74CACI ahead
2026-09-16118.8076.30+1.79CACI ahead
2026-09-15119.7876.24+1.86CACI ahead
2026-09-14119.9378.36+1.73CACI ahead
2026-09-11116.9276.01+1.77CACI ahead
2026-09-10117.4576.42+1.78CACI ahead
2026-09-09114.2275.59+1.70CACI ahead
2026-09-08117.7076.24+1.84CACI ahead
2026-09-04117.3878.49+1.67CACI ahead
2026-09-03118.5878.08+1.77CACI ahead
2026-09-02115.6278.92+1.58CACI ahead
2026-09-01118.4882.10+1.51CACI ahead
2026-08-31117.2682.71+1.42CACI ahead
2026-08-28118.2482.98+1.46CACI ahead
2026-08-27119.3082.50+1.55CACI ahead
2026-08-26117.5981.07+1.58CACI ahead
2026-08-25115.2179.37+1.60CACI ahead
2026-08-24119.8081.66+1.68CACI ahead
2026-08-21121.8583.41+1.67CACI ahead
2026-08-20121.6683.39+1.68CACI ahead
2026-08-19124.7386.31+1.64CACI ahead
2026-08-18123.4884.64+1.71CACI ahead
2026-08-17122.2283.91+1.71CACI ahead
2026-08-14126.2184.85+1.86CACI ahead
2026-08-13126.1184.13+1.92CACI ahead
2026-08-12128.0182.81+2.12CACI ahead
2026-08-11125.6583.11+2.02CACI ahead
2026-08-10122.0182.06+1.94CACI ahead
2026-08-07121.3081.15+1.99CACI ahead
2026-08-06118.3579.79+1.97CACI ahead
2026-08-0597.5074.83+1.21CACI ahead
2026-08-0498.6677.04+1.11CACI ahead
2026-08-0396.4970.03+1.57CACI ahead
2026-07-3193.6968.19+1.56CACI ahead
2026-07-3089.8566.31+1.49CACI ahead
2026-07-2991.8167.47+1.53CACI ahead
2026-07-2896.0069.82+1.61CACI ahead
2026-07-2793.3467.81+1.63CACI ahead
2026-07-2491.6266.15+1.69CACI ahead
2026-07-2390.4665.08+1.73CACI ahead
2026-07-2287.9863.27+1.75CACI ahead
2026-07-2182.9661.89+1.54CACI ahead
2026-07-2084.9563.13+1.58CACI ahead
2026-07-1786.8862.81+1.77CACI ahead
2026-07-1687.1263.88+1.70CACI ahead
2026-07-1588.8163.83+1.84CACI ahead
2026-07-1488.1962.86+1.92CACI ahead
2026-07-1389.9662.87+2.07CACI ahead
2026-07-1091.5663.13+2.19CACI ahead
2026-07-0990.9762.90+2.20CACI ahead
2026-07-0892.9463.23+2.34CACI ahead
2026-07-0793.6164.05+2.34CACI ahead
2026-07-0695.1064.13+2.48CACI ahead
2026-07-0294.6464.20+2.48CACI ahead
2026-07-0187.8860.80+2.38CACI ahead
2026-06-3087.2060.74+2.37CACI ahead
2026-06-2986.0259.25+2.49CACI ahead
2026-06-2685.4460.03+2.38CACI ahead
2026-06-2583.4358.99+2.37CACI ahead
2026-06-2486.9761.54+2.40CACI ahead
2026-06-2388.0362.59+2.41CACI ahead
2026-06-2284.6561.85+2.24CACI ahead
2026-06-1887.7963.19+2.38CACI ahead
2026-06-1793.1664.10+2.78CACI ahead
2026-06-1694.9467.00+2.63CACI ahead
2026-06-1595.5367.60+2.66CACI ahead
2026-06-1297.7672.06+2.37CACI ahead
2026-06-1198.9072.02+2.51CACI ahead
2026-06-1098.0971.79+2.51CACI ahead
2026-06-0998.8272.86+2.49CACI ahead
2026-06-0897.7172.44+2.49CACI ahead
2026-06-05100.0273.40+2.62CACI ahead
2026-06-04100.1673.48+2.67CACI ahead
2026-06-0399.3973.35+2.66CACI ahead
2026-06-0298.7874.81+2.48CACI ahead
2026-06-0198.8075.34+2.46CACI ahead
2026-05-2996.6575.39+2.29CACI ahead
2026-05-2898.4177.63+2.22CACI ahead
2026-05-2796.1577.05+2.10CACI ahead
2026-05-2694.3275.58+2.13CACI ahead
2026-05-2294.3674.33+2.32CACI ahead
2026-05-2192.2472.58+2.37CACI ahead
2026-05-2092.7873.38+2.36CACI ahead
2026-05-1992.8574.30+2.28CACI ahead
2026-05-1893.1573.64+2.43CACI ahead
2026-05-1591.6672.96+2.40CACI ahead
2026-05-1494.9074.06+2.65CACI ahead
2026-05-1394.8473.25+2.80CACI ahead
2026-05-1293.9675.74+2.41CACI ahead
2026-05-1190.8375.32+2.15CACI ahead
2026-05-0890.5376.75+1.94CACI ahead
2026-05-0792.2177.43+2.06CACI ahead
2026-05-0694.0079.58+2.00CACI ahead
2026-05-0592.9980.93+1.73CACI ahead
2026-05-0496.6787.78+1.28CACI ahead
2026-05-0196.6188.03+1.25CACI ahead
2026-04-3097.7988.03+1.39CACI ahead
2026-04-2994.6886.07+1.30CACI ahead
2026-04-2895.7586.21+1.41CACI ahead
2026-04-2794.4785.09+1.42CACI ahead
2026-04-2497.2286.16+1.61CACI ahead
2026-04-2399.1087.07+1.72CACI ahead
2026-04-2296.4288.90+1.20CACI ahead
2026-04-2197.5790.37+1.16CACI ahead
2026-04-2098.2691.33+1.13CACI ahead
2026-04-1799.2291.53+1.22CACI ahead
2026-04-1699.7892.30+1.20CACI ahead
2026-04-15100.0793.82+1.06CACI ahead
2026-04-14100.4392.12+1.31CACI ahead
2026-04-13101.6192.96+1.35CACI ahead
2026-04-10100.6090.18+1.60CACI ahead
2026-04-09106.0191.81+2.01CACI ahead
2026-04-08108.8894.76+1.98CACI ahead
2026-04-07107.1293.72+1.94CACI ahead
2026-04-06107.6594.07+1.98CACI ahead
2026-04-02108.3593.69+2.12CACI ahead
2026-04-01105.6292.03+2.06CACI ahead
2026-03-31102.3791.74+1.75CACI ahead
2026-03-30105.1290.96+2.19CACI ahead
2026-03-27106.0991.75+2.23CACI ahead
2026-03-26109.1492.96+2.44CACI ahead
2026-03-25108.9793.72+2.36CACI ahead
2026-03-24108.5593.79+2.34CACI ahead
2026-03-23110.9195.88+2.36CACI ahead
2026-03-20114.1397.85+2.51CACI ahead
2026-03-19115.3797.89+2.68CACI ahead
2026-03-18114.5898.37+2.58CACI ahead
2026-03-17115.3799.68+2.54CACI ahead
2026-03-16113.9498.78+2.54CACI ahead
2026-03-13114.20102.56+2.10CACI ahead
2026-03-12115.31102.53+2.26CACI ahead
2026-03-11113.76102.27+2.14CACI ahead
2026-03-10111.37101.76+1.95CACI ahead
2026-03-09119.18105.91+2.36CACI ahead
2026-03-06115.94104.94+2.14CACI ahead
2026-03-05115.29103.62+2.26CACI ahead
2026-03-04117.55104.24+2.47CACI ahead
2026-03-03118.53106.57+2.31CACI ahead
2026-03-02117.63105.83+2.32CACI ahead
2026-02-27114.85103.29+2.35CACI ahead
2026-02-26112.40103.74+2.01CACI ahead
2026-02-25111.06100.22+2.34CACI ahead
2026-02-24110.30102.72+1.92CACI ahead
2026-02-23107.47101.46+1.75CACI ahead
2026-02-20110.30102.35+2.01CACI ahead
2026-02-19111.28103.98+1.93CACI ahead
2026-02-18106.72101.19+1.73CACI ahead
2026-02-17106.2695.29+2.55CACI ahead
2026-02-13107.91104.00+1.55CACI ahead
2026-02-12105.67101.13+1.66CACI ahead
2026-02-11107.82102.05+1.83CACI ahead
2026-02-10117.79114.87+1.42CACI ahead
2026-02-09119.95114.78+1.71CACI ahead
2026-02-06116.41113.84+1.41CACI ahead
2026-02-05112.62109.77+1.47CACI ahead
2026-02-04113.89111.16+1.46CACI ahead
2026-02-03116.48111.96+1.70CACI ahead
2026-02-02115.26110.92+1.70CACI ahead
2026-01-30116.81111.07+1.90CACI ahead
2026-01-29117.29110.42+2.07CACI ahead
2026-01-28120.13110.77+2.41CACI ahead
2026-01-27121.07110.40+2.62CACI ahead
2026-01-26120.98111.79+2.46CACI ahead
2026-01-23124.64112.81+2.83CACI ahead
2026-01-22123.37114.12+2.54CACI ahead
2026-01-21119.06113.33+2.11CACI ahead
2026-01-20118.42112.62+2.15CACI ahead
2026-01-16119.60114.85+2.02CACI ahead
2026-01-15118.11114.06+1.96CACI ahead
2026-01-14115.07112.56+1.76CACI ahead
2026-01-13113.79115.60+1.16CACI ahead
2026-01-12113.84115.38+1.20CACI ahead
2026-01-09112.73117.00+0.82CACI ahead
2026-01-08109.94115.16+0.68CACI ahead
2026-01-07105.93115.98-0.05near the usual relationship
2026-01-06105.30116.51-0.22near the usual relationship
2026-01-05107.03115.32+0.22near the usual relationship
2026-01-02101.15108.23+0.33near the usual relationship
2025-12-31100.29106.42+0.47near the usual relationship
2025-12-30101.45108.16+0.40near the usual relationship
2025-12-29101.54109.42+0.23near the usual relationship
2025-12-26102.01109.64+0.27near the usual relationship
2025-12-24102.47110.09+0.28near the usual relationship
2025-12-23102.50109.91+0.31near the usual relationship
2025-12-22103.52109.75+0.51CACI ahead
2025-12-19104.77108.94+0.83CACI ahead
2025-12-18103.33106.88+0.92CACI ahead
2025-12-17105.54106.98+1.26CACI ahead
2025-12-16105.44107.46+1.18CACI ahead
2025-12-15106.80109.69+1.06CACI ahead
2025-12-12107.75111.92+0.89CACI ahead
2025-12-11110.39112.39+1.23CACI ahead
2025-12-10112.26111.08+1.71CACI ahead
2025-12-09110.90109.10+1.83CACI ahead
2025-12-08111.70109.50+1.91CACI ahead
2025-12-05112.11110.21+1.89CACI ahead
2025-12-04113.99113.51+1.68CACI ahead
2025-12-03111.59111.16+1.70CACI ahead
2025-12-02114.13110.35+2.24CACI ahead
2025-12-01115.24111.15+2.31CACI ahead
2025-11-28116.15112.73+2.23CACI ahead
2025-11-26115.82112.29+2.28CACI ahead
2025-11-25116.32112.97+2.28CACI ahead
2025-11-24114.86110.20+2.55CACI ahead
2025-11-21112.92110.01+2.30CACI ahead
2025-11-20111.99109.52+2.26CACI ahead
2025-11-19113.47111.60+2.18CACI ahead
2025-11-18112.42111.56+2.04CACI ahead
2025-11-17110.36111.37+1.74CACI ahead
2025-11-14111.21112.91+1.64CACI ahead
2025-11-13110.54112.86+1.55CACI ahead
2025-11-12110.42113.86+1.36CACI ahead
2025-11-11110.65116.95+0.89CACI ahead
2025-11-10111.40116.13+1.16CACI ahead
2025-11-07110.91116.20+1.07CACI ahead
2025-11-06110.00114.89+1.13CACI ahead
2025-11-05110.78115.07+1.23CACI ahead
2025-11-04110.06117.71+0.67CACI ahead
2025-11-03106.18113.88+0.61CACI ahead
2025-10-31105.83112.36+0.80CACI ahead
2025-10-30106.02112.62+0.77CACI ahead
2025-10-29105.81111.00+1.00CACI ahead
2025-10-28107.75110.79+1.35CACI ahead
2025-10-27108.93111.56+1.42CACI ahead
2025-10-24110.21112.06+1.55CACI ahead
2025-10-23110.03112.90+1.37CACI ahead
2025-10-2297.91111.18-0.50LDOS ahead
2025-10-21100.45113.95-0.49near the usual relationship
2025-10-2099.16112.37-0.47near the usual relationship
2025-10-1797.09108.84-0.29near the usual relationship
2025-10-1697.54108.78-0.20near the usual relationship
2025-10-1597.33110.06-0.45near the usual relationship
2025-10-1496.80110.47-0.62LDOS ahead
2025-10-1395.63109.69-0.72LDOS ahead
2025-10-1096.06110.92-0.84LDOS ahead
2025-10-0996.24114.47-1.38LDOS ahead
2025-10-0899.14116.94-1.24LDOS ahead
2025-10-0799.00116.21-1.16LDOS ahead
2025-10-0699.57116.82-1.16LDOS ahead
2025-10-0399.80115.37-0.91LDOS ahead
2025-10-0297.70113.79-1.05LDOS ahead
2025-10-0196.96113.04-1.07LDOS ahead
2025-09-3093.88111.47-1.40LDOS ahead
2025-09-2991.86109.49-1.48LDOS ahead
2025-09-2691.40109.07-1.51LDOS ahead
2025-09-2589.64107.57-1.63LDOS ahead
2025-09-2493.59110.55-1.36LDOS ahead
2025-09-2392.78110.38-1.49LDOS ahead
2025-09-2294.44110.82-1.26LDOS ahead
2025-09-1993.89110.58-1.34LDOS ahead
2025-09-1893.45110.40-1.40LDOS ahead
2025-09-1793.29108.42-1.13LDOS ahead
2025-09-1692.49107.70-1.17LDOS ahead
2025-09-1593.18107.79-1.06LDOS ahead
2025-09-1293.35108.46-1.15LDOS ahead
2025-09-1192.82109.21-1.38LDOS ahead
2025-09-1091.52106.40-1.18LDOS ahead
2025-09-0990.27105.61-1.30LDOS ahead
2025-09-0889.22105.24-1.46LDOS ahead
2025-09-0589.30105.59-1.51LDOS ahead
2025-09-0486.60105.34-2.03LDOS ahead
2025-09-0388.36104.83-1.61LDOS ahead
2025-09-0290.90106.71-1.43LDOS ahead
2025-08-2990.29106.72-1.57LDOS ahead
2025-08-2890.29106.98-1.63LDOS ahead
2025-08-2791.68108.18-1.57LDOS ahead
2025-08-2690.94107.57-1.63LDOS ahead
2025-08-2591.25107.13-1.51LDOS ahead
2025-08-2290.61107.21-1.66LDOS ahead
2025-08-2191.48106.44-1.37LDOS ahead
2025-08-2091.59106.28-1.33LDOS ahead
2025-08-1991.64105.44-1.19LDOS ahead
2025-08-1891.52105.07-1.16LDOS ahead
2025-08-1591.99104.78-1.03LDOS ahead
2025-08-1492.36105.26-1.04LDOS ahead
2025-08-1394.84107.33-0.92LDOS ahead
2025-08-1289.82105.01-1.51LDOS ahead
2025-08-1190.09104.50-1.38LDOS ahead
2025-08-0893.15104.12-0.73LDOS ahead
2025-08-0794.10103.39-0.43near the usual relationship
2025-08-0689.46102.93-1.26LDOS ahead
2025-08-0588.75102.02-1.25LDOS ahead
2025-08-0487.8494.94-0.17near the usual relationship
2025-08-0186.7693.91-0.20near the usual relationship
2025-07-3186.6994.18-0.26near the usual relationship
2025-07-3088.2395.00-0.11near the usual relationship
2025-07-2988.2095.27-0.17near the usual relationship
2025-07-2887.2194.59-0.24near the usual relationship
2025-07-2590.3296.30+0.06near the usual relationship
2025-07-2489.9796.30-0.01near the usual relationship
2025-07-2390.4796.69+0.02near the usual relationship
2025-07-2289.8795.14+0.18near the usual relationship
2025-07-2190.1094.82+0.29near the usual relationship
2025-07-1890.9095.88+0.25near the usual relationship
2025-07-1790.2795.98+0.11near the usual relationship
2025-07-1689.1595.00+0.07near the usual relationship
2025-07-1589.4094.51+0.21near the usual relationship
2025-07-1491.7196.55+0.28near the usual relationship
2025-07-1190.5795.59+0.24near the usual relationship
2025-07-1090.3496.15+0.09near the usual relationship
2025-07-0991.3695.69+0.38near the usual relationship
2025-07-0892.0295.62+0.52CACI ahead
2025-07-0795.0597.02+0.84CACI ahead
2025-07-0392.0497.07+0.26near the usual relationship
2025-07-0291.8295.93+0.43near the usual relationship
2025-07-0190.9994.94+0.45near the usual relationship
2025-06-3089.7393.06+0.56CACI ahead
2025-06-2787.2291.84+0.30near the usual relationship
2025-06-2687.5991.84+0.37near the usual relationship
2025-06-2586.7590.82+0.40near the usual relationship
2025-06-2485.1189.80+0.26near the usual relationship
2025-06-2386.1388.88+0.66CACI ahead
2025-06-2085.3787.57+0.76CACI ahead
2025-06-1885.5587.51+0.82CACI ahead
2025-06-1786.3488.13+0.86CACI ahead
2025-06-1683.9987.45+0.51CACI ahead
2025-06-1384.8387.99+0.58CACI ahead
2025-06-1283.9087.32+0.52CACI ahead
2025-06-1183.0586.08+0.60CACI ahead
2025-06-1082.1885.88+0.45near the usual relationship
2025-06-0983.0186.33+0.54CACI ahead
2025-06-0683.8487.39+0.51CACI ahead
2025-06-0581.3685.75+0.31near the usual relationship
2025-06-0480.0385.19+0.14near the usual relationship
2025-06-0380.4285.23+0.21near the usual relationship
2025-06-0278.3583.56+0.10near the usual relationship
2025-05-3080.5687.61-0.24near the usual relationship
2025-05-2980.7887.01-0.07near the usual relationship
2025-05-2884.0888.11+0.42near the usual relationship
2025-05-2787.9589.99+0.85CACI ahead
2025-05-2386.8989.95+0.65CACI ahead
2025-05-2289.3693.38+0.48near the usual relationship
2025-05-2188.9693.76+0.34near the usual relationship
2025-05-2089.8494.56+0.36near the usual relationship
2025-05-1989.9594.11+0.47near the usual relationship
2025-05-1690.1993.79+0.58CACI ahead
2025-05-1589.7892.47+0.76CACI ahead
2025-05-1487.8490.29+0.80CACI ahead
2025-05-1386.9791.69+0.35near the usual relationship
2025-05-1289.5592.08+0.80CACI ahead
2025-05-0989.9491.85+0.92CACI ahead
2025-05-0889.6491.26+0.98CACI ahead
2025-05-0789.2591.27+0.91CACI ahead
2025-05-0688.7591.29+0.81CACI ahead
2025-05-0586.8887.27+1.25CACI ahead
2025-05-0287.1887.77+1.21CACI ahead
2025-05-0186.3786.49+1.31CACI ahead
2025-04-3086.1886.82+1.21CACI ahead
2025-04-2984.5487.05+0.81CACI ahead
2025-04-2884.4885.98+1.02CACI ahead
2025-04-2584.6085.95+1.06CACI ahead
2025-04-2485.9585.87+1.37CACI ahead
2025-04-2379.6983.77+0.45near the usual relationship
2025-04-2279.5683.33+0.52CACI ahead
2025-04-2178.8281.55+0.74CACI ahead
2025-04-1779.0582.24+0.64CACI ahead
2025-04-1678.1082.53+0.36near the usual relationship
2025-04-1578.5383.41+0.27near the usual relationship
2025-04-1479.8284.34+0.36near the usual relationship
2025-04-1177.6883.70+0.01near the usual relationship
2025-04-1075.9382.39-0.12near the usual relationship
2025-04-0976.0482.43-0.11near the usual relationship
2025-04-0872.7978.67-0.05near the usual relationship
2025-04-0772.8878.40+0.04near the usual relationship
2025-04-0472.6778.54-0.05near the usual relationship
2025-04-0373.7982.29-0.62LDOS ahead
2025-04-0273.6484.32-1.11LDOS ahead
2025-04-0169.6279.61-1.10LDOS ahead
2025-03-3169.0679.60-1.25LDOS ahead
2025-03-2870.2879.08-0.81LDOS ahead
2025-03-2770.7780.04-0.91LDOS ahead
2025-03-2670.2080.43-1.16LDOS ahead
2025-03-2570.1580.37-1.16LDOS ahead
2025-03-2469.9280.10-1.17LDOS ahead
2025-03-2168.9178.95-1.18LDOS ahead
2025-03-2069.5879.55-1.15LDOS ahead
2025-03-1972.8281.76-0.81LDOS ahead
2025-03-1873.4181.80-0.67LDOS ahead
2025-03-1773.0081.52-0.72LDOS ahead
2025-03-1470.2779.37-0.94LDOS ahead
2025-03-1369.1978.37-1.00LDOS ahead
2025-03-1269.6578.81-0.98LDOS ahead
2025-03-1169.0779.11-1.22LDOS ahead
2025-03-1071.2981.04-1.08LDOS ahead
2025-03-0772.8782.14-0.93LDOS ahead
2025-03-0667.5678.49-1.51LDOS ahead
2025-03-0568.3078.88-1.41LDOS ahead
2025-03-0466.4578.00-1.74LDOS ahead
2025-03-0362.0376.22-2.67LDOS ahead
2025-02-2863.0376.67-2.52LDOS ahead
2025-02-2763.1776.49-2.46LDOS ahead
2025-02-2662.3176.45-2.78LDOS ahead
2025-02-2562.5477.12-2.95LDOS ahead
2025-02-2461.5875.68-2.94LDOS ahead
2025-02-2161.5574.81-2.75LDOS ahead
2025-02-2064.3176.72-2.39LDOS ahead
2025-02-1964.8477.57-2.49LDOS ahead
2025-02-1863.8377.44-2.85LDOS ahead
2025-02-1463.7178.02-3.13LDOS ahead
2025-02-1364.5677.07-2.59LDOS ahead
2025-02-1266.9680.73-2.87LDOS ahead
2025-02-1168.6981.17-2.44LDOS ahead
2025-02-1071.9284.22-2.26LDOS ahead
2025-02-0770.8183.93-2.58LDOS ahead
2025-02-0670.6383.07-2.43LDOS ahead
2025-02-0571.5583.35-2.23LDOS ahead
2025-02-0472.7283.74-1.97LDOS ahead
2025-02-0372.4183.56-2.05LDOS ahead
2025-01-3172.7083.78-2.04LDOS ahead
2025-01-3072.7883.88-2.07LDOS ahead
2025-01-2972.6082.75-1.82LDOS ahead
2025-01-2873.8083.47-1.64LDOS ahead
2025-01-2779.2187.58-1.09LDOS ahead
2025-01-2476.5085.88-1.48LDOS ahead
2025-01-2379.3687.84-1.14LDOS ahead
2025-01-2287.5495.04-0.66LDOS ahead
2025-01-2187.5694.73-0.58LDOS ahead
2025-01-1785.1591.54-0.43near the usual relationship
2025-01-1685.5191.49-0.32near the usual relationship
2025-01-1584.0991.58-0.76LDOS ahead
2025-01-1483.0590.11-0.67LDOS ahead
2025-01-1383.9690.04-0.39near the usual relationship
2025-01-1081.1788.15-0.70LDOS ahead
2025-01-0878.2885.98-0.98LDOS ahead
2025-01-0777.9186.89-1.38LDOS ahead
2025-01-0678.1387.45-1.47LDOS ahead
2025-01-0379.0886.80-0.99LDOS ahead
2025-01-0277.3584.53-0.89LDOS ahead
2024-12-3176.0584.98-1.46LDOS ahead
2024-12-3075.7184.46-1.43LDOS ahead
2024-12-2776.4585.23-1.43LDOS ahead
2024-12-2676.8085.95-1.54LDOS ahead
2024-12-2476.2185.88-1.73LDOS ahead
2024-12-2376.2385.65-1.67LDOS ahead
2024-12-2075.8085.42-1.76LDOS ahead
2024-12-1975.2884.47-1.67LDOS ahead
2024-12-1875.9286.16-1.99LDOS ahead
2024-12-1778.1488.57-1.97LDOS ahead
2024-12-1678.4889.96-2.31LDOS ahead
2024-12-1377.1590.35-2.94LDOS ahead
2024-12-1277.9290.24-2.68LDOS ahead
2024-12-1180.9490.58-1.76LDOS ahead
2024-12-1083.6694.48-2.03LDOS ahead
2024-12-0982.2994.57-2.56LDOS ahead
2024-12-0685.5596.24-1.98LDOS ahead
2024-12-0585.8696.60-2.01LDOS ahead
2024-12-0485.4597.37-2.41LDOS ahead
2024-12-0385.4396.82-2.28LDOS ahead
2024-12-0286.5296.82-1.93LDOS ahead
2024-11-2986.5697.57-2.18LDOS ahead
2024-11-2786.6496.73-1.91LDOS ahead
2024-11-2688.9397.99-1.53LDOS ahead
2024-11-2587.4096.51-1.61LDOS ahead
2024-11-2288.2397.63-1.69LDOS ahead
2024-11-2189.5097.15-1.11LDOS ahead
2024-11-2085.6295.65-2.02LDOS ahead
2024-11-1983.6993.38-2.01LDOS ahead
2024-11-1884.3293.70-1.90LDOS ahead
2024-11-1588.6194.77-0.71LDOS ahead
2024-11-1492.4899.08-0.77LDOS ahead
2024-11-13102.08114.68-2.28LDOS ahead
2024-11-12106.76118.73-1.98LDOS ahead
2024-11-11107.75118.80-1.72LDOS ahead
2024-11-08106.96117.05-1.50LDOS ahead
2024-11-07105.34113.63-1.05LDOS ahead
2024-11-06106.20114.56-1.06LDOS ahead
2024-11-05106.33112.12-0.35near the usual relationship
2024-11-04104.14109.91-0.39near the usual relationship
2024-11-01104.14107.93+0.17near the usual relationship
2024-10-31104.00108.05+0.08near the usual relationship
2024-10-30105.88109.57+0.18near the usual relationship
2024-10-29106.04109.64+0.18near the usual relationship
2024-10-28103.10100.12+1.88CACI ahead
2024-10-25103.0299.52+1.96CACI ahead
2024-10-24104.0099.57+2.13CACI ahead
2024-10-2398.6599.29+0.80CACI ahead
2024-10-2298.5298.84+0.84CACI ahead
2024-10-21100.16100.09+0.90CACI ahead
2024-10-18100.00100.00+0.85CACI ahead

One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Oct 24, 2024 (CACI +5.4%, LDOS +0.3%); Oct 29, 2024 (CACI +2.8%, LDOS +9.5%); Aug 5, 2025 (CACI +1.0%, LDOS +7.5%); Oct 23, 2025 (CACI +12.4%, LDOS +1.6%); Feb 17, 2026 (CACI -1.5%, LDOS -8.4%); Aug 6, 2026 (CACI +21.4%, LDOS +6.6%). Upcoming earnings: LDOS Nov 3, 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)

3 simulated trades to Oct 20, 2026: -2.43% per trade on average after costs, 1 won.

LegsEnteredExitedWhyDaysBefore costsCosts + borrowAfter costs
Long CACI · Short LDOSNov 20, 2024Feb 13, 2025divergence stop85-$537.26-$69.21-$642.36 (-6.42%)
Long LDOS · Short CACIMar 16, 2021Nov 1, 2021divergence stop230-$1,160.60-$99.23-$1,171.22 (-11.71%)
Long CACI · Short LDOSFeb 11, 2021Feb 24, 2021converged13$1,170.72-$80.78$1,084.95 (+10.85%)

Per $10,000 a leg. A replay on today's companies cannot prove an edge.

The companies

CACI and LDOS at a glance

CACI CACI International Inc.

Listing
NYSE · SEC CIK 16058
Industry
EDP Services · SIC 7373 Services-Computer Integrated Systems Design
Market value
$13.6B
Price history
2,515 daily closes, Oct 20, 2016 to Oct 22, 2026

LDOS Leidos Holdings Inc.

Listing
NYSE · SEC CIK 1336920
Industry
EDP Services · SIC 7373 Services-Computer Integrated Systems Design
Market value
$15.8B
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
IOT / LDOSWatchlistIOT by 1.28 sdSIC 7373 Services-Computer Integrated Systems Design
IOT / CACIWatchlistIOT by 0.97 sdSIC 7373 Services-Computer Integrated Systems Design

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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.