SIC 7374 Services-Computer Processing & Data Preparation

Reddit Inc. vs Workday Inc.

WatchlistRDDT / WDAYPrices through Oct 22, 2026

Why these are rivals: #2 and #3 by market value ($47B vs $30B) with SEC SIC 7374 (Services-Computer Processing & Data Preparation).

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: 0.25 (needs >= 0.60)
  • Mean reversion: ADF t-statistic of the spread: -1.44 (needs <= -2.873 (5% critical value))
Business leadership

WDAY is the larger business

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

YearRDDTWDAYLarger
2025$2.2B$9.6BWDAY
2024$1.3B$8.4BWDAY
2023$804M$7.3BWDAY
2022$667M$6.2BWDAY
2021-$5.1B-
2020-$4.3B-

WDAY led in every year with figures for both. Market value: RDDT $29.8B, WDAY $47.0B.

Stock leadership

WDAY is ahead now

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

WDAY leads RDDT by 1.91 standard deviations: +44.7% over its usual price ratio. 1 lead switch in the last year.

Price change3 mo6 mo12 mo
RDDT-10.9%-1.8%-27.0%
WDAY+55.2%+83.1%-14.5%
Relationship

Not a measured twin today

Only these tests can make a pair tradable on paper.

Pass
Aligned sessions: 650 (needs >= 254)
Fail
Co-movement: daily return correlation, 252 sessions: 0.25 (needs >= 0.60)
Fail
Mean reversion: ADF t-statistic of the spread: -1.44 (needs <= -2.873 (5% critical value))
Pass
Speed: half-life of the spread, sessions: 23.83 (needs <= 63)
Data
Both stocks current
The twins over two years

Prices side by side, and the gap between them

RDDT Reddit Inc. WDAY Workday Inc.Price index, 100 = 2024-10-18. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
100200300Oct 2024Oct 2025Oct 2026RDDT 186WDAY 86
Spread z-score: RDDT relative to WDAY, against the 252 sessions before each day. Above 0: RDDT ahead; below 0: WDAY ahead. Lines at +/-2 (idea) and +/-4 (stop).
-4stop-2idea0+2idea+4stopOct 2024Oct 2025Oct 2026
Data table (504 sessions)
DateRDDT indexWDAY indexzAhead
2026-10-22185.7485.89-1.91WDAY ahead
2026-10-21189.4783.02-1.64WDAY ahead
2026-10-20192.4083.43-1.59WDAY ahead
2026-10-19191.7779.84-1.38WDAY ahead
2026-10-16193.0078.05-1.23WDAY ahead
2026-10-15196.9880.43-1.28WDAY ahead
2026-10-14183.6877.21-1.44WDAY ahead
2026-10-13191.9576.09-1.13WDAY ahead
2026-10-12197.6977.00-1.04WDAY ahead
2026-10-09197.6676.32-1.00WDAY ahead
2026-10-08193.4176.82-1.15WDAY ahead
2026-10-07188.7675.37-1.18WDAY ahead
2026-10-06184.1276.30-1.38WDAY ahead
2026-10-05185.9377.29-1.40WDAY ahead
2026-10-02182.7776.14-1.42WDAY ahead
2026-10-01184.8376.39-1.38WDAY ahead
2026-09-30176.0777.90-1.76WDAY ahead
2026-09-29179.6877.38-1.63WDAY ahead
2026-09-28176.8677.14-1.71WDAY ahead
2026-09-25185.2277.49-1.50WDAY ahead
2026-09-24188.7878.12-1.45WDAY ahead
2026-09-23187.8678.69-1.53WDAY ahead
2026-09-22192.4276.99-1.29WDAY ahead
2026-09-21196.2178.50-1.30WDAY ahead
2026-09-18186.4679.30-1.65WDAY ahead
2026-09-17188.9181.51-1.75WDAY ahead
2026-09-16194.8176.80-1.26WDAY ahead
2026-09-15197.3277.99-1.28WDAY ahead
2026-09-14200.7279.44-1.30WDAY ahead
2026-09-11195.0275.96-1.22WDAY ahead
2026-09-10192.0175.71-1.30WDAY ahead
2026-09-09181.0176.10-1.67WDAY ahead
2026-09-08184.6576.19-1.58WDAY ahead
2026-09-04190.9380.08-1.69WDAY ahead
2026-09-03192.8284.64-1.97WDAY ahead
2026-09-02195.4382.16-1.73WDAY ahead
2026-09-01178.7981.14-2.20WDAY ahead
2026-08-31182.7180.76-2.07WDAY ahead
2026-08-28189.1283.74-2.10WDAY ahead
2026-08-27190.3079.18-1.75WDAY ahead
2026-08-26192.0478.02-1.62WDAY ahead
2026-08-25200.8079.52-1.47WDAY ahead
2026-08-24188.7581.46-2.01WDAY ahead
2026-08-21189.4881.81-2.03WDAY ahead
2026-08-20185.8080.71-2.09WDAY ahead
2026-08-19187.5381.16-2.10WDAY ahead
2026-08-18195.6177.98-1.60WDAY ahead
2026-08-17203.3478.20-1.39WDAY ahead
2026-08-14220.1481.27-1.14WDAY ahead
2026-08-13195.4584.44-2.15WDAY ahead
2026-08-12189.6871.70-1.32WDAY ahead
2026-08-11193.0774.15-1.42WDAY ahead
2026-08-10196.1975.34-1.43WDAY ahead
2026-08-07199.8873.48-1.15WDAY ahead
2026-08-06186.4969.63-1.25WDAY ahead
2026-08-05191.9269.80-1.08WDAY ahead
2026-08-04197.7470.06-0.91WDAY ahead
2026-08-03191.2467.51-0.87WDAY ahead
2026-07-31173.8865.58-1.25WDAY ahead
2026-07-30220.0764.67+0.29near the usual relationship
2026-07-29220.0168.72-0.06near the usual relationship
2026-07-28220.5765.32+0.26near the usual relationship
2026-07-27221.5560.35+0.74RDDT ahead
2026-07-24208.5755.36+0.89RDDT ahead
2026-07-23208.6352.30+1.21RDDT ahead
2026-07-22210.6154.16+1.07RDDT ahead
2026-07-21229.7257.74+1.19RDDT ahead
2026-07-20224.5260.22+0.85RDDT ahead
2026-07-17223.9659.22+0.93RDDT ahead
2026-07-16229.0059.49+1.02RDDT ahead
2026-07-15244.7858.01+1.50RDDT ahead
2026-07-14251.2657.19+1.71RDDT ahead
2026-07-13248.3759.26+1.48RDDT ahead
2026-07-10241.4656.83+1.55RDDT ahead
2026-07-09247.6056.59+1.70RDDT ahead
2026-07-08241.4256.40+1.60RDDT ahead
2026-07-07246.5358.76+1.50RDDT ahead
2026-07-06248.2856.44+1.75RDDT ahead
2026-07-02240.6355.38+1.69RDDT ahead
2026-07-01244.4553.28+1.97RDDT ahead
2026-06-30214.5650.07+1.64RDDT ahead
2026-06-29215.5650.55+1.63RDDT ahead
2026-06-26206.3550.81+1.40RDDT ahead
2026-06-25195.3346.54+1.56RDDT ahead
2026-06-24198.6748.30+1.46RDDT ahead
2026-06-23204.7347.09+1.73RDDT ahead
2026-06-22210.6846.24+1.96RDDT ahead
2026-06-18216.2747.83+1.93RDDT ahead
2026-06-17205.1349.83+1.49RDDT ahead
2026-06-16216.8051.85+1.56RDDT ahead
2026-06-15224.8253.01+1.62RDDT ahead
2026-06-12200.3753.50+1.07RDDT ahead
2026-06-11214.1753.39+1.36RDDT ahead
2026-06-10212.8756.23+1.11RDDT ahead
2026-06-09220.1657.36+1.17RDDT ahead
2026-06-08211.5358.80+0.90RDDT ahead
2026-06-05214.4059.02+0.94RDDT ahead
2026-06-04227.3360.50+1.08RDDT ahead
2026-06-03209.5160.09+0.79RDDT ahead
2026-06-02209.0660.90+0.73RDDT ahead
2026-06-01219.8464.31+0.72RDDT ahead
2026-05-29217.5559.80+0.95RDDT ahead
2026-05-28207.2853.18+1.21RDDT ahead
2026-05-27190.5950.92+1.06RDDT ahead
2026-05-26178.7950.73+0.84RDDT ahead
2026-05-22175.1252.41+0.66RDDT ahead
2026-05-21185.4649.84+1.03RDDT ahead
2026-05-20181.3651.79+0.83RDDT ahead
2026-05-19191.4552.90+0.94RDDT ahead
2026-05-18196.6752.72+1.04RDDT ahead
2026-05-15195.5151.13+1.13RDDT ahead
2026-05-14193.2148.57+1.26RDDT ahead
2026-05-13190.5147.65+1.28RDDT ahead
2026-05-12188.3248.52+1.19RDDT ahead
2026-05-11197.1749.66+1.27RDDT ahead
2026-05-08192.5852.29+1.04RDDT ahead
2026-05-07202.6653.53+1.13RDDT ahead
2026-05-06205.8850.16+1.39RDDT ahead
2026-05-05212.1552.71+1.33RDDT ahead
2026-05-04208.9952.31+1.32RDDT ahead
2026-05-01205.7851.93+1.30RDDT ahead
2026-04-30181.9950.07+1.04RDDT ahead
2026-04-29182.6350.08+1.06RDDT ahead
2026-04-28182.8649.57+1.10RDDT ahead
2026-04-27198.0348.20+1.44RDDT ahead
2026-04-24191.4648.99+1.30RDDT ahead
2026-04-23189.0746.90+1.40RDDT ahead
2026-04-22203.1051.78+1.33RDDT ahead
2026-04-21193.8452.83+1.13RDDT ahead
2026-04-20205.5452.33+1.34RDDT ahead
2026-04-17202.4750.65+1.40RDDT ahead
2026-04-16200.8051.08+1.36RDDT ahead
2026-04-15195.9050.77+1.31RDDT ahead
2026-04-14191.0348.21+1.40RDDT ahead
2026-04-13184.6149.05+1.26RDDT ahead
2026-04-10172.7246.02+1.26RDDT ahead
2026-04-09171.0546.25+1.22RDDT ahead
2026-04-08179.2348.74+1.21RDDT ahead
2026-04-07174.4652.16+0.95RDDT ahead
2026-04-06171.0053.06+0.85RDDT ahead
2026-04-02168.1154.10+0.75RDDT ahead
2026-04-01168.3352.79+0.83RDDT ahead
2026-03-31166.4453.14+0.78RDDT ahead
2026-03-30153.4452.67+0.58RDDT ahead
2026-03-27150.6150.79+0.64RDDT ahead
2026-03-26157.3152.34+0.68RDDT ahead
2026-03-25172.6051.98+0.97RDDT ahead
2026-03-24168.2652.88+0.86RDDT ahead
2026-03-23174.2456.06+0.80RDDT ahead
2026-03-20172.8755.61+0.81RDDT ahead
2026-03-19170.7354.56+0.83RDDT ahead
2026-03-18176.5054.11+0.95RDDT ahead
2026-03-17178.4155.29+0.93RDDT ahead
2026-03-16173.0554.66+0.89RDDT ahead
2026-03-13163.6154.44+0.75RDDT ahead
2026-03-12163.4754.87+0.73RDDT ahead
2026-03-11169.4956.38+0.76RDDT ahead
2026-03-10165.8058.28+0.62RDDT ahead
2026-03-09171.6460.59+0.61RDDT ahead
2026-03-06172.3061.78+0.57RDDT ahead
2026-03-05178.4260.20+0.74RDDT ahead
2026-03-04182.0658.51+0.88RDDT ahead
2026-03-03180.0958.74+0.85RDDT ahead
2026-03-02181.8454.81+1.07RDDT ahead
2026-02-27180.2354.71+1.06RDDT ahead
2026-02-26186.9656.90+1.06RDDT ahead
2026-02-25185.0154.46+1.16RDDT ahead
2026-02-24175.6253.27+1.09RDDT ahead
2026-02-23176.0952.85+1.13RDDT ahead
2026-02-20185.6256.37+1.10RDDT ahead
2026-02-19180.6357.27+0.99RDDT ahead
2026-02-18182.2758.34+0.97RDDT ahead
2026-02-17172.1058.54+0.80RDDT ahead
2026-02-13172.6259.07+0.78RDDT ahead
2026-02-12162.0158.92+0.62RDDT ahead
2026-02-11172.1859.13+0.78RDDT ahead
2026-02-10185.3962.68+0.83RDDT ahead
2026-02-09175.2063.22+0.64RDDT ahead
2026-02-06172.8466.64+0.46near the usual relationship
2026-02-05186.7164.94+0.75RDDT ahead
2026-02-04188.7469.60+0.59RDDT ahead
2026-02-03204.4665.92+0.97RDDT ahead
2026-02-02218.9770.92+0.96RDDT ahead
2026-01-30222.8371.84+0.98RDDT ahead
2026-01-29234.9271.44+1.16RDDT ahead
2026-01-28238.7477.36+0.98RDDT ahead
2026-01-27242.6577.14+1.04RDDT ahead
2026-01-26264.0778.06+1.26RDDT ahead
2026-01-23270.5677.41+1.36RDDT ahead
2026-01-22265.1976.97+1.33RDDT ahead
2026-01-21259.7475.02+1.36RDDT ahead
2026-01-20278.5774.85+1.58RDDT ahead
2026-01-16285.5576.43+1.61RDDT ahead
2026-01-15282.7678.83+1.50RDDT ahead
2026-01-14311.9779.35+1.79RDDT ahead
2026-01-13320.0681.62+1.80RDDT ahead
2026-01-12301.6385.04+1.51RDDT ahead
2026-01-09302.3084.75+1.55RDDT ahead
2026-01-08313.9185.81+1.64RDDT ahead
2026-01-07315.8286.36+1.65RDDT ahead
2026-01-06313.7386.02+1.66RDDT ahead
2026-01-05301.6785.45+1.57RDDT ahead
2026-01-02299.0084.17+1.61RDDT ahead
2025-12-31284.1487.85+1.33RDDT ahead
2025-12-30288.4588.73+1.36RDDT ahead
2025-12-29290.0589.57+1.36RDDT ahead
2025-12-26279.0790.27+1.22RDDT ahead
2025-12-24279.1788.70+1.29RDDT ahead
2025-12-23279.1388.12+1.32RDDT ahead
2025-12-22288.2089.16+1.39RDDT ahead
2025-12-19288.2489.43+1.40RDDT ahead
2025-12-18285.9689.20+1.39RDDT ahead
2025-12-17281.0188.35+1.38RDDT ahead
2025-12-16276.8988.40+1.34RDDT ahead
2025-12-15270.0987.90+1.29RDDT ahead
2025-12-12277.8591.82+1.25RDDT ahead
2025-12-11288.6891.64+1.39RDDT ahead
2025-12-10294.3391.11+1.48RDDT ahead
2025-12-09291.8590.91+1.48RDDT ahead
2025-12-08292.8990.40+1.52RDDT ahead
2025-12-05289.3889.97+1.51RDDT ahead
2025-12-04275.3488.60+1.41RDDT ahead
2025-12-03272.9887.88+1.42RDDT ahead
2025-12-02275.3587.15+1.49RDDT ahead
2025-12-01276.1487.27+1.51RDDT ahead
2025-11-28267.5888.20+1.38RDDT ahead
2025-11-26256.5688.08+1.26RDDT ahead
2025-11-25270.0695.59+1.17RDDT ahead
2025-11-24241.0492.70+0.89RDDT ahead
2025-11-21226.8092.09+0.72RDDT ahead
2025-11-20224.8288.68+0.82RDDT ahead
2025-11-19232.1191.57+0.83RDDT ahead
2025-11-18229.5392.29+0.77RDDT ahead
2025-11-17231.8392.01+0.82RDDT ahead
2025-11-14238.9594.41+0.84RDDT ahead
2025-11-13234.1491.41+0.89RDDT ahead
2025-11-12250.7092.41+1.09RDDT ahead
2025-11-11257.3792.84+1.17RDDT ahead
2025-11-10252.4093.25+1.10RDDT ahead
2025-11-07240.5292.10+0.99RDDT ahead
2025-11-06227.0091.83+0.81RDDT ahead
2025-11-05242.6194.94+0.93RDDT ahead
2025-11-04232.1095.50+0.77RDDT ahead
2025-11-03253.3797.22+1.01RDDT ahead
2025-10-31258.2898.13+1.05RDDT ahead
2025-10-30240.3295.25+0.91RDDT ahead
2025-10-29260.5394.63+1.21RDDT ahead
2025-10-28263.2596.91+1.17RDDT ahead
2025-10-27271.0097.72+1.24RDDT ahead
2025-10-24264.7799.29+1.12RDDT ahead
2025-10-23248.2399.51+0.91RDDT ahead
2025-10-22243.5799.33+0.86RDDT ahead
2025-10-21254.28100.49+0.97RDDT ahead
2025-10-20250.2898.66+0.98RDDT ahead
2025-10-17240.9895.82+0.96RDDT ahead
2025-10-16245.9593.10+1.12RDDT ahead
2025-10-15248.1696.02+1.06RDDT ahead
2025-10-14242.7197.01+0.96RDDT ahead
2025-10-13251.7796.78+1.08RDDT ahead
2025-10-10245.4395.38+1.06RDDT ahead
2025-10-09261.6897.44+1.19RDDT ahead
2025-10-08250.0597.45+1.06RDDT ahead
2025-10-07254.5495.37+1.18RDDT ahead
2025-10-06251.7197.50+1.09RDDT ahead
2025-10-03256.1296.73+1.17RDDT ahead
2025-10-02248.3694.94+1.14RDDT ahead
2025-10-01250.4394.98+1.17RDDT ahead
2025-09-30284.2998.47+1.44RDDT ahead
2025-09-29299.11101.31+1.51RDDT ahead
2025-09-26296.80100.90+1.50RDDT ahead
2025-09-25287.7099.29+1.47RDDT ahead
2025-09-24291.3398.79+1.53RDDT ahead
2025-09-23293.5198.30+1.57RDDT ahead
2025-09-22318.3799.26+1.78RDDT ahead
2025-09-19326.9295.56+1.97RDDT ahead
2025-09-18334.6295.51+2.05RDDT ahead
2025-09-17329.3896.07+2.00RDDT ahead
2025-09-16329.6289.58+2.21RDDT ahead
2025-09-15325.8891.11+2.15RDDT ahead
2025-09-12314.3391.37+2.05RDDT ahead
2025-09-11322.0592.72+2.09RDDT ahead
2025-09-10320.1992.64+2.09RDDT ahead
2025-09-09296.9194.38+1.84RDDT ahead
2025-09-08284.2894.82+1.72RDDT ahead
2025-09-05296.6694.52+1.85RDDT ahead
2025-09-04286.9194.54+1.77RDDT ahead
2025-09-03275.8295.48+1.64RDDT ahead
2025-09-02272.0193.62+1.67RDDT ahead
2025-08-29278.2294.41+1.71RDDT ahead
2025-08-28278.7993.46+1.76RDDT ahead
2025-08-27260.9493.96+1.58RDDT ahead
2025-08-26271.2491.16+1.77RDDT ahead
2025-08-25271.6191.37+1.78RDDT ahead
2025-08-22268.6290.51+1.79RDDT ahead
2025-08-21270.2793.09+1.74RDDT ahead
2025-08-20269.9393.05+1.75RDDT ahead
2025-08-19282.0593.99+1.86RDDT ahead
2025-08-18298.8494.83+2.00RDDT ahead
2025-08-15304.7092.48+2.14RDDT ahead
2025-08-14300.9590.77+2.18RDDT ahead
2025-08-13290.2091.24+2.09RDDT ahead
2025-08-12276.9187.78+2.09RDDT ahead
2025-08-11272.8787.41+2.08RDDT ahead
2025-08-08266.3090.83+1.93RDDT ahead
2025-08-07261.8390.39+1.92RDDT ahead
2025-08-06263.0593.70+1.86RDDT ahead
2025-08-05246.0992.02+1.74RDDT ahead
2025-08-04249.3992.08+1.79RDDT ahead
2025-08-01233.1890.89+1.66RDDT ahead
2025-07-31198.5093.82+1.15RDDT ahead
2025-07-30184.5997.22+0.87RDDT ahead
2025-07-29179.0598.02+0.77RDDT ahead
2025-07-28187.3997.37+0.92RDDT ahead
2025-07-25184.9998.88+0.85RDDT ahead
2025-07-24183.1097.02+0.88RDDT ahead
2025-07-23180.5998.59+0.81RDDT ahead
2025-07-22180.2297.80+0.83RDDT ahead
2025-07-21180.8395.59+0.91RDDT ahead
2025-07-18183.2495.33+0.96RDDT ahead
2025-07-17176.1794.44+0.88RDDT ahead
2025-07-16178.3892.74+0.97RDDT ahead
2025-07-15178.9992.00+1.01RDDT ahead
2025-07-14180.9491.93+1.05RDDT ahead
2025-07-11179.9691.37+1.06RDDT ahead
2025-07-10176.7693.79+0.95RDDT ahead
2025-07-09180.0498.24+0.88RDDT ahead
2025-07-08180.4298.36+0.89RDDT ahead
2025-07-07189.5898.66+1.02RDDT ahead
2025-07-03194.1098.89+1.09RDDT ahead
2025-07-02196.9697.24+1.18RDDT ahead
2025-07-01188.1797.85+1.05RDDT ahead
2025-06-30186.1298.17+1.02RDDT ahead
2025-06-27176.7797.09+0.92RDDT ahead
2025-06-26177.9497.03+0.95RDDT ahead
2025-06-25175.1395.49+0.96RDDT ahead
2025-06-24174.0397.84+0.88RDDT ahead
2025-06-23165.8196.77+0.79RDDT ahead
2025-06-20172.0097.43+0.88RDDT ahead
2025-06-18174.4996.89+0.94RDDT ahead
2025-06-17165.4499.27+0.74RDDT ahead
2025-06-16156.00100.48+0.55RDDT ahead
2025-06-13146.08100.02+0.40near the usual relationship
2025-06-12143.63102.54+0.29near the usual relationship
2025-06-11142.19102.81+0.26near the usual relationship
2025-06-10144.73103.37+0.30near the usual relationship
2025-06-09145.28103.44+0.31near the usual relationship
2025-06-06149.93103.37+0.40near the usual relationship
2025-06-05138.74102.30+0.23near the usual relationship
2025-06-04146.12102.05+0.38near the usual relationship
2025-06-03137.03102.72+0.20near the usual relationship
2025-06-02138.58101.34+0.27near the usual relationship
2025-05-30138.88101.32+0.28near the usual relationship
2025-05-29134.7798.89+0.27near the usual relationship
2025-05-28130.3298.13+0.21near the usual relationship
2025-05-27129.3297.88+0.20near the usual relationship
2025-05-23124.5597.35+0.13near the usual relationship
2025-05-22121.53111.29-0.27near the usual relationship
2025-05-21118.48109.84-0.30near the usual relationship
2025-05-20130.58112.01-0.09near the usual relationship
2025-05-19133.49111.79-0.03near the usual relationship
2025-05-16139.96111.69+0.10near the usual relationship
2025-05-15140.41112.37+0.09near the usual relationship
2025-05-14154.91110.92+0.38near the usual relationship
2025-05-13139.48110.45+0.13near the usual relationship
2025-05-12137.47109.04+0.14near the usual relationship
2025-05-09134.07106.01+0.15near the usual relationship
2025-05-08133.29105.52+0.15near the usual relationship
2025-05-07130.44102.50+0.18near the usual relationship
2025-05-06135.96101.35+0.31near the usual relationship
2025-05-05143.79101.58+0.45near the usual relationship
2025-05-02140.70101.72+0.40near the usual relationship
2025-05-01146.84100.87+0.52RDDT ahead
2025-04-30144.09100.21+0.50RDDT ahead
2025-04-29150.9899.55+0.63RDDT ahead
2025-04-28149.8398.09+0.65RDDT ahead
2025-04-25145.9897.98+0.60RDDT ahead
2025-04-24138.7596.89+0.52RDDT ahead
2025-04-23132.4791.98+0.54RDDT ahead
2025-04-22125.6690.39+0.46near the usual relationship
2025-04-21116.3887.57+0.37near the usual relationship
2025-04-17118.8690.40+0.35near the usual relationship
2025-04-16117.9093.14+0.27near the usual relationship
2025-04-15119.2395.44+0.25near the usual relationship
2025-04-14121.4695.03+0.31near the usual relationship
2025-04-11125.0392.65+0.43near the usual relationship
2025-04-10126.0991.93+0.47near the usual relationship
2025-04-09137.0394.66+0.60RDDT ahead
2025-04-08109.8886.09+0.33near the usual relationship
2025-04-07114.9688.07+0.39near the usual relationship
2025-04-04107.4388.82+0.23near the usual relationship
2025-04-03119.7893.39+0.36near the usual relationship
2025-04-02135.3596.28+0.56RDDT ahead
2025-04-01136.0395.93+0.58RDDT ahead
2025-03-31129.6795.52+0.50RDDT ahead
2025-03-28133.1497.55+0.51RDDT ahead
2025-03-27136.25100.03+0.51RDDT ahead
2025-03-26148.58102.58+0.65RDDT ahead
2025-03-25155.04103.42n/a
2025-03-24154.44102.22n/a
2025-03-21143.02102.05n/a
2025-03-20134.43102.45n/a
2025-03-19135.86103.28n/a
2025-03-18136.09103.04n/a
2025-03-17155.20102.51n/a
2025-03-14158.4899.87n/a
2025-03-13150.2297.03n/a
2025-03-12161.5398.85n/a
2025-03-11151.7199.37n/a
2025-03-10132.6299.39n/a
2025-03-07165.61103.23n/a
2025-03-06186.30103.80n/a
2025-03-05208.31106.19n/a
2025-03-04196.75103.74n/a
2025-03-03200.80104.13n/a
2025-02-28199.98107.71n/a
2025-02-27197.50106.58n/a
2025-02-26207.79110.88n/a
2025-02-25197.76104.39n/a
2025-02-24204.66107.09n/a
2025-02-21205.69104.87n/a
2025-02-20216.86107.01n/a
2025-02-19234.44106.80n/a
2025-02-18231.31108.69n/a
2025-02-14242.74105.55n/a
2025-02-13253.34106.40n/a
2025-02-12267.58105.50n/a
2025-02-11264.23107.58n/a
2025-02-10278.03110.39n/a
2025-02-07278.41111.21n/a
2025-02-06267.63113.64n/a
2025-02-05273.37112.96n/a
2025-02-04266.14106.24n/a
2025-02-03250.07106.25n/a
2025-01-31246.66107.19n/a
2025-01-30245.90106.38n/a
2025-01-29249.69108.56n/a
2025-01-28240.73110.61n/a
2025-01-27223.52108.07n/a
2025-01-24225.46105.64n/a
2025-01-23224.96104.43n/a
2025-01-22227.12103.68n/a
2025-01-21232.78102.55n/a
2025-01-17216.72102.11n/a
2025-01-16216.16102.54n/a
2025-01-15210.99101.67n/a
2025-01-14203.73100.63n/a
2025-01-13203.52100.62n/a
2025-01-10206.53102.14n/a
2025-01-08212.62104.18n/a
2025-01-07213.00102.13n/a
2025-01-06221.87103.95n/a
2025-01-03219.70103.42n/a
2025-01-02205.08103.01n/a
2024-12-31202.03105.54n/a
2024-12-30204.61107.17n/a
2024-12-27214.51108.90n/a
2024-12-26218.47110.18n/a
2024-12-24219.30110.05n/a
2024-12-23208.42108.55n/a
2024-12-20211.01111.68n/a
2024-12-19202.37109.14n/a
2024-12-18198.58110.00n/a
2024-12-17208.64113.71n/a
2024-12-16220.15113.85n/a
2024-12-13213.41111.94n/a
2024-12-12202.11112.41n/a
2024-12-11205.09111.40n/a
2024-12-10192.74110.80n/a
2024-12-09206.64114.49n/a
2024-12-06201.19108.97n/a
2024-12-05189.23107.45n/a
2024-12-04190.64109.98n/a
2024-12-03185.20105.15n/a
2024-12-02175.08102.86n/a
2024-11-29173.91102.25n/a
2024-11-27173.10103.65n/a
2024-11-26167.63110.52n/a
2024-11-25175.40109.49n/a
2024-11-22181.30109.52n/a
2024-11-21195.33109.65n/a
2024-11-20168.44106.12n/a
2024-11-19169.54106.31n/a
2024-11-18159.98106.09n/a
2024-11-15154.24106.11n/a
2024-11-14163.02111.05n/a
2024-11-13163.24113.10n/a
2024-11-12157.91110.57n/a
2024-11-11159.74108.05n/a
2024-11-08166.63104.93n/a
2024-11-07162.47105.52n/a
2024-11-06149.67102.99n/a
2024-11-05151.5198.68n/a
2024-11-04134.7798.63n/a
2024-11-01139.6597.81n/a
2024-10-31147.4795.65n/a
2024-10-30143.4597.46n/a
2024-10-29101.0497.61n/a
2024-10-2898.4996.10n/a
2024-10-25100.5797.23n/a
2024-10-2497.1696.87n/a
2024-10-2396.0299.00n/a
2024-10-2295.54100.93n/a
2024-10-2197.1099.70n/a
2024-10-18100.00100.00n/a

One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Jul 31, 2026 (RDDT -21.0%, WDAY +1.4%). Upcoming earnings: RDDT Oct 29, 2026 (after-hours).

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

RDDT and WDAY at a glance

RDDT Reddit Inc.

Listing
NYSE · SEC CIK 1713445
Industry
EDP Services · SIC 7374 Services-Computer Processing & Data Preparation
Market value
$29.8B
Price history
650 daily closes, Mar 21, 2024 to Oct 22, 2026

WDAY Workday Inc.

Listing
Nasdaq · SEC CIK 1327811
Industry
EDP Services · SIC 7374 Services-Computer Processing & Data Preparation
Market value
$47.0B
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
ADP / RDDTWatchlistADP by 2.31 sdSIC 7374 Services-Computer Processing & Data Preparation
INFY / WDAYWatchlistWDAY by 1.31 sdEDP Services
ADP / WDAYWatchlistneitherEDP Services

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Explore the private beta

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.