Multifractal Analysis of Market Efficiency across Structural Breaks: Implications for the Adaptive Market Hypothesis

Ashok Chanabasangouda Patil and Shailesh Rastogi
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Ashok Chanabasangouda Patil: Symbiosis Institute of Business Management, Pune, Maharashtra 412115, India
Shailesh Rastogi: Symbiosis Institute of Business Management, Pune, Maharashtra 412115, India

JRFM, 2020, vol. 13, issue 10, 1-18

Abstract: The primary objective of this paper is to assess the behavior of long memory in price, volume, and price-volume cross-correlation series across structural breaks. The secondary objective is to find the appropriate structural breaks in the price series. The structural breaks in the series are identified using the Bai and Perron procedure, and in each segment, Multifractal Detrended Fluctuation Analysis (MFDFA) and Multifractal Detrended Cross-Correlation Analysis (MFDCCA) are conducted to capture the long memory in each series. The price series is persistent in small fluctuations and anti-persistent in large fluctuations across all the structural segments. This confirms that long memory in the series is not affected by the structural breaks. Both volume and price-volume cross-correlation are anti-persistent in all the structural segments. In other words, volume acts as a carrier of the information only in the non-volatile (normal) market. The varying Hurst exponent across the structural segments indicates the varying levels of persistence and signifies the volatile market. The findings of the study are useful for understanding the practical implications of the Adaptive Market Hypothesis (AMH).

Keywords: market efficiency; price-volume; adaptive market hypothesis; structural breaks; multifractality; long memory (search for similar items in EconPapers)
JEL-codes: C E F2 F3 G (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (3)

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