SIC 3571 Electronic Computers

Apple Inc. vs Super Micro Computer Inc.

WatchlistAAPL / SMCIPrices through Oct 22, 2026

Why these are rivals: #1 and #3 by market value ($5005B vs $21B) with SEC SIC 3571 (Electronic Computers).

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: 0.10 (needs >= 0.60)
Business leadership

AAPL is the larger business

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

YearAAPLSMCILarger
2025$416.2B$22.0BAAPL
2024$391.0B$15.0BAAPL
2023$383.3B$7.1BAAPL
2022$394.3B$5.2BAAPL
2021$365.8B$3.6BAAPL
2020$274.5B$3.3BAAPL

AAPL led in every year with figures for both. Market value: AAPL $5.00T, SMCI $21.1B.

Stock leadership

AAPL is ahead now

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

AAPL leads SMCI by 0.91 standard deviations: +18.0% over its usual price ratio. 3 lead switches in the last year.

Price change3 mo6 mo12 mo
AAPL+4.6%+27.4%+32.5%
SMCI+12.0%+26.1%-38.5%
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: 0.10 (needs >= 0.60)
Pass
Mean reversion: ADF t-statistic of the spread: -3.69 (needs <= -2.873 (5% critical value))
Pass
Speed: half-life of the spread, sessions: 8.61 (needs <= 63)
Data
Both stocks current
The twins over two years

Prices side by side, and the gap between them

AAPL Apple Inc. SMCI Super Micro Computer Inc.Price index, 100 = 2024-10-18. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
50100150Oct 2024Oct 2025Oct 2026AAPL 148SMCI 71
Spread z-score: AAPL relative to SMCI, against the 252 sessions before each day. Above 0: AAPL ahead; below 0: SMCI ahead. Lines at +/-2 (idea) and +/-4 (stop).
-4stop-2idea0+2idea+4stopOct 2024Oct 2025Oct 2026
Data table (504 sessions)
DateAAPL indexSMCI indexzAhead
2026-10-22148.1871.35+0.91AAPL ahead
2026-10-21146.3875.26+0.55AAPL ahead
2026-10-20144.4768.71+0.98AAPL ahead
2026-10-19145.9367.92+1.09AAPL ahead
2026-10-16146.1566.93+1.17AAPL ahead
2026-10-15145.5374.25+0.62AAPL ahead
2026-10-14145.9475.71+0.54AAPL ahead
2026-10-13145.2282.67+0.09near the usual relationship
2026-10-12145.0984.60-0.01near the usual relationship
2026-10-09143.2588.56-0.27near the usual relationship
2026-10-08144.8690.50-0.30near the usual relationship
2026-10-07143.2695.09-0.57SMCI ahead
2026-10-06141.9791.96-0.44near the usual relationship
2026-10-05141.6691.39-0.41near the usual relationship
2026-10-02142.0092.45-0.44near the usual relationship
2026-10-01140.5688.70-0.29near the usual relationship
2026-09-30141.7186.90-0.16near the usual relationship
2026-09-29140.1786.80-0.20near the usual relationship
2026-09-28144.0088.40-0.15near the usual relationship
2026-09-25145.1491.54-0.26near the usual relationship
2026-09-24142.9487.83-0.14near the usual relationship
2026-09-23143.4187.69-0.11near the usual relationship
2026-09-22144.5787.90-0.08near the usual relationship
2026-09-21144.2587.18-0.05near the usual relationship
2026-09-18143.0382.71+0.14near the usual relationship
2026-09-17143.4085.38+0.03near the usual relationship
2026-09-16141.4577.97+0.34near the usual relationship
2026-09-15141.0075.41+0.47near the usual relationship
2026-09-14141.7477.74+0.38near the usual relationship
2026-09-11141.3984.85+0.03near the usual relationship
2026-09-10138.9779.09+0.24near the usual relationship
2026-09-09134.1982.37-0.05near the usual relationship
2026-09-08134.5685.19-0.16near the usual relationship
2026-09-04136.1683.77-0.05near the usual relationship
2026-09-03139.6680.13+0.23near the usual relationship
2026-09-02138.2878.29+0.29near the usual relationship
2026-09-01138.3577.68+0.32near the usual relationship
2026-08-31134.8378.88+0.17near the usual relationship
2026-08-28136.0478.46+0.23near the usual relationship
2026-08-27133.8681.38+0.04near the usual relationship
2026-08-26133.3879.12+0.14near the usual relationship
2026-08-25131.8781.38+0.00near the usual relationship
2026-08-24132.0674.42+0.34near the usual relationship
2026-08-21131.6478.80+0.12near the usual relationship
2026-08-20132.4777.23+0.23near the usual relationship
2026-08-19134.8277.40+0.29near the usual relationship
2026-08-18131.9379.16+0.13near the usual relationship
2026-08-17130.0481.00+0.00near the usual relationship
2026-08-14130.1884.30-0.13near the usual relationship
2026-08-13129.9082.86-0.07near the usual relationship
2026-08-12128.6279.58+0.05near the usual relationship
2026-08-11129.7566.86+0.71AAPL ahead
2026-08-10131.1766.57+0.77AAPL ahead
2026-08-07133.3365.87+0.87AAPL ahead
2026-08-06132.9462.17+1.06AAPL ahead
2026-08-05132.3464.16+0.94AAPL ahead
2026-08-04131.6567.05+0.77AAPL ahead
2026-08-03129.1160.60+1.05AAPL ahead
2026-07-31131.4560.09+1.14AAPL ahead
2026-07-30141.8958.68+1.48AAPL ahead
2026-07-29143.9154.38+1.78AAPL ahead
2026-07-28144.7160.20+1.47AAPL ahead
2026-07-27143.3763.08+1.30AAPL ahead
2026-07-24141.7163.69+1.24AAPL ahead
2026-07-23136.8866.02+1.02AAPL ahead
2026-07-22138.6864.66+1.13AAPL ahead
2026-07-21139.4653.96+1.74AAPL ahead
2026-07-20138.9750.42+1.96AAPL ahead
2026-07-17142.0251.16+2.00AAPL ahead
2026-07-16141.8152.22+1.94AAPL ahead
2026-07-15139.3656.90+1.63AAPL ahead
2026-07-14133.9858.51+1.42AAPL ahead
2026-07-13135.0358.53+1.46AAPL ahead
2026-07-10134.1859.90+1.37AAPL ahead
2026-07-09134.5659.75+1.40AAPL ahead
2026-07-08133.3659.61+1.39AAPL ahead
2026-07-07132.2055.54+1.60AAPL ahead
2026-07-06133.0557.53+1.52AAPL ahead
2026-07-02131.3357.60+1.48AAPL ahead
2026-07-01125.2758.51+1.30AAPL ahead
2026-06-30123.1362.06+1.06AAPL ahead
2026-06-29119.8959.56+1.12AAPL ahead
2026-06-26120.7664.81+0.88AAPL ahead
2026-06-25117.0967.03+0.69AAPL ahead
2026-06-24124.7168.66+0.81AAPL ahead
2026-06-23125.2370.50+0.75AAPL ahead
2026-06-22126.3975.03+0.59AAPL ahead
2026-06-18126.8164.88+1.06AAPL ahead
2026-06-17125.9458.78+1.35AAPL ahead
2026-06-16127.3461.83+1.24AAPL ahead
2026-06-15126.1465.28+1.05AAPL ahead
2026-06-12123.8964.45+1.05AAPL ahead
2026-06-11125.8067.65+0.95AAPL ahead
2026-06-10124.0861.93+1.19AAPL ahead
2026-06-09123.6485.99+0.17near the usual relationship
2026-06-08128.3193.08+0.05near the usual relationship
2026-06-05130.7888.11+0.28near the usual relationship
2026-06-04132.4499.24-0.04near the usual relationship
2026-06-03132.03100.34-0.08near the usual relationship
2026-06-02134.13106.16-0.20near the usual relationship
2026-06-01130.3499.20-0.08near the usual relationship
2026-05-29132.7997.52+0.03near the usual relationship
2026-05-28132.9887.39+0.38near the usual relationship
2026-05-27132.2880.81+0.60AAPL ahead
2026-05-26131.2078.50+0.67AAPL ahead
2026-05-22131.4175.29+0.81AAPL ahead
2026-05-21129.7870.80+0.96AAPL ahead
2026-05-20128.6270.80+0.94AAPL ahead
2026-05-19127.2264.66+1.19AAPL ahead
2026-05-18126.7465.28+1.16AAPL ahead
2026-05-15127.7665.68+1.18AAPL ahead
2026-05-14126.9069.89+0.98AAPL ahead
2026-05-13127.1867.71+1.09AAPL ahead
2026-05-12125.4569.38+0.98AAPL ahead
2026-05-11124.5470.93+0.89AAPL ahead
2026-05-08124.8274.84+0.74AAPL ahead
2026-05-07122.3171.14+0.84AAPL ahead
2026-05-06122.3473.34+0.75AAPL ahead
2026-05-05120.9358.89+1.40AAPL ahead
2026-05-04117.8059.08+1.32AAPL ahead
2026-05-01119.2157.32+1.46AAPL ahead
2026-04-30115.4757.98+1.34AAPL ahead
2026-04-29114.9755.69+1.46AAPL ahead
2026-04-28115.2057.66+1.37AAPL ahead
2026-04-27113.8858.93+1.28AAPL ahead
2026-04-24115.3461.53+1.19AAPL ahead
2026-04-23116.3556.60+1.49AAPL ahead
2026-04-22116.2461.74+1.22AAPL ahead
2026-04-21113.2660.16+1.23AAPL ahead
2026-04-20116.1960.96+1.28AAPL ahead
2026-04-17114.9960.43+1.28AAPL ahead
2026-04-16112.0960.09+1.23AAPL ahead
2026-04-15113.3757.74+1.41AAPL ahead
2026-04-14110.1457.55+1.33AAPL ahead
2026-04-13110.3054.95+1.50AAPL ahead
2026-04-10110.8453.45+1.62AAPL ahead
2026-04-09110.8549.13+1.92AAPL ahead
2026-04-08110.1749.45+1.90AAPL ahead
2026-04-07107.8747.97+1.95AAPL ahead
2026-04-06110.1546.66+2.14AAPL ahead
2026-04-02108.9049.13+1.95AAPL ahead
2026-04-01108.7847.63+2.08AAPL ahead
2026-03-31108.0048.18+2.04AAPL ahead
2026-03-30104.9544.56+2.24AAPL ahead
2026-03-27105.8746.49+2.15AAPL ahead
2026-03-26107.6147.00+2.20AAPL ahead
2026-03-25107.5050.89+1.94AAPL ahead
2026-03-24107.0847.04+2.23AAPL ahead
2026-03-23107.0245.66+2.37AAPL ahead
2026-03-20105.5343.44+2.55AAPL ahead
2026-03-19105.9465.15+1.08AAPL ahead
2026-03-18106.3664.22+1.16AAPL ahead
2026-03-17108.1866.67+1.09AAPL ahead
2026-03-16107.5867.41+1.04AAPL ahead
2026-03-13106.4365.07+1.14AAPL ahead
2026-03-12108.8365.38+1.21AAPL ahead
2026-03-11110.9867.27+1.19AAPL ahead
2026-03-10110.9967.27+1.19AAPL ahead
2026-03-09110.5967.67+1.16AAPL ahead
2026-03-06109.5666.25+1.22AAPL ahead
2026-03-05110.7668.22+1.15AAPL ahead
2026-03-04111.7169.09+1.14AAPL ahead
2026-03-03112.2364.92+1.41AAPL ahead
2026-03-02112.6567.35+1.29AAPL ahead
2026-02-27112.4268.54+1.23AAPL ahead
2026-02-26116.1568.30+1.38AAPL ahead
2026-02-25116.6971.10+1.25AAPL ahead
2026-02-24115.8065.87+1.53AAPL ahead
2026-02-23113.2764.98+1.51AAPL ahead
2026-02-20112.5968.60+1.29AAPL ahead
2026-02-19110.8968.05+1.27AAPL ahead
2026-02-18112.4962.87+1.65AAPL ahead
2026-02-17112.2963.71+1.60AAPL ahead
2026-02-13108.8464.62+1.44AAPL ahead
2026-02-12111.3764.39+1.56AAPL ahead
2026-02-11117.2367.80+1.57AAPL ahead
2026-02-10116.4670.52+1.40AAPL ahead
2026-02-09116.8670.95+1.39AAPL ahead
2026-02-06118.3572.75+1.35AAPL ahead
2026-02-05117.4165.28+1.75AAPL ahead
2026-02-04117.6671.43+1.40AAPL ahead
2026-02-03114.6762.78+1.82AAPL ahead
2026-02-02114.9062.87+1.83AAPL ahead
2026-01-30110.4261.60+1.75AAPL ahead
2026-01-29109.9163.73+1.60AAPL ahead
2026-01-28109.1266.04+1.43AAPL ahead
2026-01-27109.9066.02+1.47AAPL ahead
2026-01-26108.6965.17+1.48AAPL ahead
2026-01-23105.5567.08+1.25AAPL ahead
2026-01-22105.6868.66+1.17AAPL ahead
2026-01-21105.3868.22+1.18AAPL ahead
2026-01-20104.9866.46+1.28AAPL ahead
2026-01-16108.7469.06+1.26AAPL ahead
2026-01-15109.8862.25+1.74AAPL ahead
2026-01-14110.6259.82+1.94AAPL ahead
2026-01-13111.0960.52+1.92AAPL ahead
2026-01-12110.7463.73+1.70AAPL ahead
2026-01-09110.3763.82+1.70AAPL ahead
2026-01-08110.2363.27+1.74AAPL ahead
2026-01-07110.7863.50+1.75AAPL ahead
2026-01-06111.6464.62+1.72AAPL ahead
2026-01-05113.7363.63+1.87AAPL ahead
2026-01-02115.3265.51+1.81AAPL ahead
2025-12-31115.6961.93+2.07AAPL ahead
2025-12-30116.2062.74+2.04AAPL ahead
2025-12-29116.4963.65+2.01AAPL ahead
2025-12-26116.3464.83+1.93AAPL ahead
2025-12-24116.5164.64+1.96AAPL ahead
2025-12-23115.9065.09+1.91AAPL ahead
2025-12-22115.3165.74+1.86AAPL ahead
2025-12-19116.4665.83+1.90AAPL ahead
2025-12-18115.8362.15+2.15AAPL ahead
2025-12-17115.6863.14+2.09AAPL ahead
2025-12-16116.8666.99+1.89AAPL ahead
2025-12-15116.6466.38+1.95AAPL ahead
2025-12-12118.4268.41+1.90AAPL ahead
2025-12-11118.3171.98+1.68AAPL ahead
2025-12-10118.6373.85+1.59AAPL ahead
2025-12-09117.9574.10+1.56AAPL ahead
2025-12-08118.2574.84+1.54AAPL ahead
2025-12-05118.6373.40+1.66AAPL ahead
2025-12-04119.4572.43+1.77AAPL ahead
2025-12-03120.9171.27+1.91AAPL ahead
2025-12-02121.7869.66+2.07AAPL ahead
2025-12-01120.4770.69+1.97AAPL ahead
2025-11-28118.6671.63+1.85AAPL ahead
2025-11-26118.1169.47+1.99AAPL ahead
2025-11-25117.8668.73+2.04AAPL ahead
2025-11-24117.4170.50+1.89AAPL ahead
2025-11-21115.5368.11+1.98AAPL ahead
2025-11-20113.3066.78+1.96AAPL ahead
2025-11-19114.2871.37+1.64AAPL ahead
2025-11-18113.8073.85+1.42AAPL ahead
2025-11-17113.8172.15+1.50AAPL ahead
2025-11-14115.9277.06+1.27AAPL ahead
2025-11-13116.1574.25+1.43AAPL ahead
2025-11-12116.3780.22+1.09AAPL ahead
2025-11-11117.1382.14+1.00AAPL ahead
2025-11-10114.6585.04+0.74AAPL ahead
2025-11-07114.2484.13+0.77AAPL ahead
2025-11-06114.8085.35+0.72AAPL ahead
2025-11-05114.9588.93+0.54AAPL ahead
2025-11-04114.91100.30+0.03near the usual relationship
2025-11-03114.49107.38-0.28near the usual relationship
2025-10-31115.05109.94-0.35near the usual relationship
2025-10-30115.49106.58-0.20near the usual relationship
2025-10-29114.77111.49-0.42near the usual relationship
2025-10-28114.47110.79-0.40near the usual relationship
2025-10-27114.39109.12-0.34near the usual relationship
2025-10-24111.84102.18-0.16near the usual relationship
2025-10-23110.46101.40-0.18near the usual relationship
2025-10-22109.98111.09-0.58SMCI ahead
2025-10-21111.82116.00-0.69SMCI ahead
2025-10-20111.59116.46-0.72SMCI ahead
2025-10-17107.36110.41-0.65SMCI ahead
2025-10-16105.30113.92-0.87SMCI ahead
2025-10-15106.10114.13-0.84SMCI ahead
2025-10-14105.43112.38-0.81SMCI ahead
2025-10-13105.39115.85-0.94SMCI ahead
2025-10-10104.37111.85-0.83SMCI ahead
2025-10-09108.10122.68-1.08SMCI ahead
2025-10-08109.81124.16-1.07SMCI ahead
2025-10-07109.14116.53-0.83SMCI ahead
2025-10-06109.23115.57-0.79SMCI ahead
2025-10-03109.80109.94-0.56SMCI ahead
2025-10-02109.42111.09-0.63SMCI ahead
2025-10-01108.70110.85-0.65SMCI ahead
2025-09-30108.35101.44-0.29near the usual relationship
2025-09-29108.2798.10-0.14near the usual relationship
2025-09-26108.7196.95-0.08near the usual relationship
2025-09-25109.3197.84-0.09near the usual relationship
2025-09-24107.3797.76-0.16near the usual relationship
2025-09-23108.2799.43-0.20near the usual relationship
2025-09-22108.9799.17-0.16near the usual relationship
2025-09-19104.4796.93-0.24near the usual relationship
2025-09-18101.2397.21-0.38near the usual relationship
2025-09-17101.7095.01-0.26near the usual relationship
2025-09-16101.3495.03-0.28near the usual relationship
2025-09-15100.7296.02-0.34near the usual relationship
2025-09-1299.6095.22-0.36near the usual relationship
2025-09-1197.8993.00-0.33near the usual relationship
2025-09-1096.5192.91-0.39near the usual relationship
2025-09-0999.7290.82-0.15near the usual relationship
2025-09-08101.2384.72+0.20near the usual relationship
2025-09-05102.0085.51+0.20near the usual relationship
2025-09-04102.0386.12+0.17near the usual relationship
2025-09-03101.4884.85+0.21near the usual relationship
2025-09-0297.7586.29-0.01near the usual relationship
2025-08-2998.7887.90-0.04near the usual relationship
2025-08-2898.9693.04-0.27near the usual relationship
2025-08-2798.0894.71-0.37near the usual relationship
2025-08-2697.5893.86-0.35near the usual relationship
2025-08-2596.6693.25-0.35near the usual relationship
2025-08-2296.9292.85-0.31near the usual relationship
2025-08-2195.7089.53-0.21near the usual relationship
2025-08-2096.1790.16-0.21near the usual relationship
2025-08-1998.1191.49-0.18near the usual relationship
2025-08-1898.2597.04-0.41near the usual relationship
2025-08-1598.5596.00-0.35near the usual relationship
2025-08-1499.0696.25-0.33near the usual relationship
2025-08-1399.2997.48-0.37near the usual relationship
2025-08-1297.7298.24-0.46near the usual relationship
2025-08-1196.6795.64-0.39near the usual relationship
2025-08-0897.6094.37-0.29near the usual relationship
2025-08-0793.6398.75-0.62SMCI ahead
2025-08-0690.7499.01-0.75SMCI ahead
2025-08-0586.35121.16-1.71SMCI ahead
2025-08-0486.53123.21-1.76SMCI ahead
2025-08-0186.12119.85-1.67SMCI ahead
2025-07-3188.33124.78-1.72SMCI ahead
2025-07-3088.96128.46-1.80SMCI ahead
2025-07-2989.90124.06-1.61SMCI ahead
2025-07-2891.09127.06-1.65SMCI ahead
2025-07-2591.01115.26-1.27SMCI ahead
2025-07-2490.96111.13-1.12SMCI ahead
2025-07-2391.13109.39-1.03SMCI ahead
2025-07-2291.23105.50-0.88SMCI ahead
2025-07-2190.42108.97-1.02SMCI ahead
2025-07-1889.86109.54-1.04SMCI ahead
2025-07-1789.37111.62-1.11SMCI ahead
2025-07-1689.43112.61-1.12SMCI ahead
2025-07-1588.98112.51-1.11SMCI ahead
2025-07-1488.77105.23-0.87SMCI ahead
2025-07-1189.86104.19-0.78SMCI ahead
2025-07-1090.39106.56-0.82SMCI ahead
2025-07-0989.85105.84-0.81SMCI ahead
2025-07-0889.37103.91-0.75SMCI ahead
2025-07-0789.3499.68-0.60SMCI ahead
2025-07-0390.87102.75-0.63SMCI ahead
2025-07-0290.40103.13-0.65SMCI ahead
2025-07-0188.4399.87-0.60SMCI ahead
2025-06-3087.31103.70-0.75SMCI ahead
2025-06-2785.57100.68-0.70SMCI ahead
2025-06-2685.53104.25-0.80SMCI ahead
2025-06-2585.7798.62-0.61SMCI ahead
2025-06-2485.2390.65-0.36near the usual relationship
2025-06-2385.7486.52-0.19near the usual relationship
2025-06-2085.5395.90-0.49near the usual relationship
2025-06-1883.6594.10-0.49near the usual relationship
2025-06-1783.2591.22-0.40near the usual relationship
2025-06-1684.4392.45-0.39near the usual relationship
2025-06-1383.6087.94-0.27near the usual relationship
2025-06-1284.7791.75-0.34near the usual relationship
2025-06-1184.5991.43-0.33near the usual relationship
2025-06-1086.2490.80-0.25near the usual relationship
2025-06-0985.7291.24-0.27near the usual relationship
2025-06-0686.7787.92-0.12near the usual relationship
2025-06-0585.3786.27-0.11near the usual relationship
2025-06-0486.3193.38-0.28near the usual relationship
2025-06-0386.5091.39-0.21near the usual relationship
2025-06-0285.8387.18-0.10near the usual relationship
2025-05-3085.4784.68-0.02near the usual relationship
2025-05-2985.0987.07-0.10near the usual relationship
2025-05-2885.2988.79-0.13near the usual relationship
2025-05-2785.2087.96-0.10near the usual relationship
2025-05-2383.0984.83-0.07near the usual relationship
2025-05-2285.6987.43-0.06near the usual relationship
2025-05-2186.0088.13-0.06near the usual relationship
2025-05-2088.0390.50-0.06near the usual relationship
2025-05-1988.8494.77-0.14near the usual relationship
2025-05-1689.9097.65-0.17near the usual relationship
2025-05-1589.9893.02-0.05near the usual relationship
2025-05-1490.3595.22-0.09near the usual relationship
2025-05-1390.6182.29+0.27near the usual relationship
2025-05-1289.7070.93+0.61AAPL ahead
2025-05-0984.4867.69+0.58AAPL ahead
2025-05-0884.0467.94+0.57AAPL ahead
2025-05-0783.5168.73+0.53AAPL ahead
2025-05-0684.4769.70+0.53AAPL ahead
2025-05-0584.6368.07+0.60AAPL ahead
2025-05-0287.3871.33+0.57AAPL ahead
2025-05-0190.7769.26+0.73AAPL ahead
2025-04-3090.4367.41+0.78AAPL ahead
2025-04-2989.8876.17+0.50AAPL ahead
2025-04-2889.4278.86+0.42near the usual relationship
2025-04-2589.0677.17+0.47near the usual relationship
2025-04-2488.6775.77+0.50AAPL ahead
2025-04-2387.0669.61+0.65AAPL ahead
2025-04-2285.0064.71+0.77AAPL ahead
2025-04-2182.2062.44+0.78AAPL ahead
2025-04-1783.8266.66+0.68AAPL ahead
2025-04-1682.6767.48+0.64AAPL ahead
2025-04-1586.0270.84+0.62AAPL ahead
2025-04-1486.1870.08+0.66AAPL ahead
2025-04-1184.3270.14+0.61AAPL ahead
2025-04-1081.0371.27+0.50AAPL ahead
2025-04-0984.6277.68+0.42near the usual relationship
2025-04-0873.3767.10+0.44near the usual relationship
2025-04-0777.2269.83+0.46near the usual relationship
2025-04-0480.1663.10+0.75AAPL ahead
2025-04-0386.4668.39+0.75AAPL ahead
2025-04-0295.2774.25+0.78AAPL ahead
2025-04-0194.9774.16+0.79AAPL ahead
2025-03-3194.5272.45+0.83AAPL ahead
2025-03-2892.7272.49+0.80AAPL ahead
2025-03-2795.2673.47+0.83AAPL ahead
2025-03-2694.2778.37+0.69AAPL ahead
2025-03-2595.2185.99+0.53AAPL ahead
2025-03-2493.9388.28+0.46near the usual relationship
2025-03-2192.8889.19+0.43near the usual relationship
2025-03-2091.1182.73+0.54AAPL ahead
2025-03-1991.5984.85+0.51AAPL ahead
2025-03-1890.5180.19+0.60AAPL ahead
2025-03-1791.0688.74+0.43near the usual relationship
2025-03-1490.8589.23+0.42near the usual relationship
2025-03-1389.2382.69+0.53AAPL ahead
2025-03-1292.3389.86+0.45near the usual relationship
2025-03-1193.9786.42+0.56AAPL ahead
2025-03-1096.8078.08+0.80AAPL ahead
2025-03-07101.7380.91+0.84AAPL ahead
2025-03-06100.1478.40+0.87AAPL ahead
2025-03-05100.3182.31+0.79AAPL ahead
2025-03-04100.4082.82+0.79AAPL ahead
2025-03-03101.2976.32+0.96AAPL ahead
2025-02-28102.9187.73+0.75AAPL ahead
2025-02-27100.9890.88+0.65AAPL ahead
2025-02-26102.28108.15+0.37near the usual relationship
2025-02-25105.1296.36+0.63AAPL ahead
2025-02-24105.15109.20+0.41near the usual relationship
2025-02-21104.49118.64+0.26near the usual relationship
2025-02-20104.61125.41+0.16near the usual relationship
2025-02-19104.20127.49+0.13near the usual relationship
2025-02-18104.03118.07+0.27near the usual relationship
2025-02-14104.09101.38+0.55AAPL ahead
2025-02-13102.7889.46+0.75AAPL ahead
2025-02-12100.8083.96+0.84AAPL ahead
2025-02-1198.9981.70+0.86AAPL ahead
2025-02-1096.8790.25+0.65AAPL ahead
2025-02-0796.8676.77+0.94AAPL ahead
2025-02-0699.2471.60+1.12AAPL ahead
2025-02-0598.9266.63+1.25AAPL ahead
2025-02-0499.0661.70+1.40AAPL ahead
2025-02-0397.0356.81+1.52AAPL ahead
2025-01-31100.4360.35+1.49AAPL ahead
2025-01-30101.1060.60+1.51AAPL ahead
2025-01-29101.8658.82+1.59AAPL ahead
2025-01-28101.3959.63+1.57AAPL ahead
2025-01-2797.8161.51+1.45AAPL ahead
2025-01-2494.8070.40+1.16AAPL ahead
2025-01-2395.1770.69+1.16AAPL ahead
2025-01-2295.2571.65+1.14AAPL ahead
2025-01-2194.7468.66+1.21AAPL ahead
2025-01-1797.8665.21+1.37AAPL ahead
2025-01-1697.1365.85+1.35AAPL ahead
2025-01-15101.2265.57+1.44AAPL ahead
2025-01-1499.2764.60+1.44AAPL ahead
2025-01-1399.7465.76+1.42AAPL ahead
2025-01-10100.7968.98+1.35AAPL ahead
2025-01-08103.2869.00+1.40AAPL ahead
2025-01-07103.0772.75+1.30AAPL ahead
2025-01-06104.2677.13+1.21AAPL ahead
2025-01-03103.5670.52+1.37AAPL ahead
2025-01-02103.7763.58+1.58AAPL ahead
2024-12-31106.5664.49+1.61AAPL ahead
2024-12-30107.3264.92+1.61AAPL ahead
2024-12-27108.7667.67+1.56AAPL ahead
2024-12-26110.2271.39+1.49AAPL ahead
2024-12-24109.8772.64+1.45AAPL ahead
2024-12-23108.6368.56+1.55AAPL ahead
2024-12-20108.2966.84+1.60AAPL ahead
2024-12-19106.2966.10+1.59AAPL ahead
2024-12-18105.5568.20+1.52AAPL ahead
2024-12-17107.8671.52+1.47AAPL ahead
2024-12-16106.8370.76+1.48AAPL ahead
2024-12-13105.5977.13+1.29AAPL ahead
2024-12-12105.5180.26+1.21AAPL ahead
2024-12-11104.8981.02+1.17AAPL ahead
2024-12-10105.4385.78+1.07AAPL ahead
2024-12-09105.0093.44+0.89AAPL ahead
2024-12-06103.3492.95+0.87AAPL ahead
2024-12-05103.4287.05+0.99AAPL ahead
2024-12-04103.4188.47+0.96AAPL ahead
2024-12-03103.2685.08+1.03AAPL ahead
2024-12-02101.9588.87+0.92AAPL ahead
2024-11-29100.9969.06+1.38AAPL ahead
2024-11-2799.9774.21+1.22AAPL ahead
2024-11-26100.0372.85+1.26AAPL ahead
2024-11-2599.0981.27+1.03AAPL ahead
2024-11-2297.8270.14+1.29AAPL ahead
2024-11-2197.2462.84+1.49AAPL ahead
2024-11-2097.4554.59+1.77AAPL ahead
2024-11-1997.1459.82+1.60AAPL ahead
2024-11-1897.0345.58+2.13AAPL ahead
2024-11-1595.7439.31+2.42AAPL ahead
2024-11-1497.1138.11+2.53AAPL ahead
2024-11-1395.8043.02+2.29AAPL ahead
2024-11-1295.4245.92+2.17AAPL ahead
2024-11-1195.4249.15+2.04AAPL ahead
2024-11-0896.5851.88+1.97AAPL ahead
2024-11-0796.8053.91+1.90AAPL ahead
2024-11-0694.7748.03+2.10AAPL ahead
2024-11-0595.0958.61+1.71AAPL ahead
2024-11-0494.4755.08+1.83AAPL ahead
2024-11-0194.8655.12+1.85AAPL ahead
2024-10-3196.1361.60+1.65AAPL ahead
2024-10-3097.9169.97+1.43AAPL ahead
2024-10-2999.43103.94+0.65AAPL ahead
2024-10-2899.32100.97+0.70AAPL ahead
2024-10-2598.47100.02+0.70AAPL ahead
2024-10-2498.1197.82+0.73AAPL ahead
2024-10-2398.2095.98+0.76AAPL ahead
2024-10-22100.3797.27+0.78AAPL ahead
2024-10-21100.63101.14+0.70AAPL ahead
2024-10-18100.00100.00+0.71AAPL ahead

One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Oct 30, 2024 (AAPL -1.5%, SMCI -32.7%); Mar 20, 2026 (AAPL -0.4%, SMCI -33.3%); May 6, 2026 (AAPL +1.2%, SMCI +24.5%); Jun 10, 2026 (AAPL +0.3%, SMCI -28.0%). Upcoming earnings: AAPL Nov 2, 2026 (after-hours); SMCI Nov 3, 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

AAPL and SMCI at a glance

AAPL Apple Inc.

Listing
Nasdaq · SEC CIK 320193
Industry
Computer Manufacturing · SIC 3571 Electronic Computers
Market value
$5.00T
Price history
2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

SMCI Super Micro Computer Inc.

Listing
Nasdaq · SEC CIK 1375365
Industry
Computer Manufacturing · SIC 3571 Electronic Computers
Market value
$21.1B
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
AAPL / IBMWatchlistAAPL by 1.14 sdComputer Manufacturing
DELL / SMCIWatchlistDELL by 1.09 sdSIC 3571 Electronic Computers
AAPL / DELLWatchlistDELL by 0.91 sdComputer Manufacturing

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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.