Using the standard bispectrum rebranded as an extended Fourier transform, the paper claims Infosys stock prices show phase-coupled frequency modes while nine other NSE stocks and the Nifty 50 index do not.
Are stock markets really efficient? evidence of the adaptive market hypothesis.International Review of Financial Analysis, 47:39–49, 2016
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Identification of phase correlations in Financial Stock Market Turbulence
Using the standard bispectrum rebranded as an extended Fourier transform, the paper claims Infosys stock prices show phase-coupled frequency modes while nine other NSE stocks and the Nifty 50 index do not.