Drawdown-based risk indicators for high-frequency financial volumes

Guglielmo D’Amico, Bice Di Basilio () and Filippo Petroni
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Guglielmo D’Amico: Gabriele D’Annunzio University of Chieti-Pescara
Bice Di Basilio: Gabriele D’Annunzio University of Chieti-Pescara
Filippo Petroni: Gabriele D’Annunzio University of Chieti-Pescara

Financial Innovation, 2024, vol. 10, issue 1, 1-40

Abstract: Abstract In stock markets, trading volumes serve as a crucial variable, acting as a measure for a security’s liquidity level. To evaluate liquidity risk exposure, we examine the process of volume drawdown and measures of crash-recovery within fluctuating time frames. These moving time windows shield our financial indicators from being affected by the massive transaction volume, a characteristic of the opening and closing of stock markets. The empirical study is conducted on the high-frequency financial volumes of Tesla, Netflix, and Apple, spanning from April to September 2022. First, we model the financial volume time series for each stock using a semi-Markov model, known as the weighted-indexed semi-Markov chain (WISMC) model. Second, we calculate both real and synthetic drawdown-based risk indicators for comparison purposes. The findings reveal that our risk measures possess statistically different distributions, contingent on the selected time windows. On a global scale, for all assets, financial risk indicators calculated on data derived from the WISMC model closely align with the real ones in terms of Kullback–Leibler divergence.

Keywords: Drawdown-based measures; High-frequency financial volumes; Semi-Markov model; Right censoring; Chi-square independence test; Goodness-of-fit test; Kullback–Leibler divergence (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1186/s40854-023-00593-0

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