Assessing measures of order flow toxicity and early warning signals for market turbulence

Torben Andersen, Oleg Bondarenko

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Following the "flash crash" on May 6, 2010, warning signals for impending market stress have been in high demand, yet only the VPIN metric of Easley, López de Prado, and O'Hara (ELO) has claimed success. In addition, ELO find the metric useful in predicting short-term volatility. VPIN involves decomposing volume into active buys and sells. We utilize quotes and trade data to construct an accurate trade classification measure for E-mini S&P 500 futures. Against this benchmark, the ELO Bulk Volume Classification (BVC) scheme is inferior to a standard tick rule. Moreover, VPIN predicts volatility solely because increasing volatility induces systematic classification errors in the BVC procedure. We conclude that VPIN is unsuitable for capturing order flow toxicity or signaling ensuing market turbulence.

Original languageEnglish (US)
Pages (from-to)1-54
Number of pages54
JournalReview of Finance
Issue number1
StatePublished - Mar 1 2015


  • C58
  • G01
  • G12
  • G14
  • G17

ASJC Scopus subject areas

  • Accounting
  • Finance
  • Economics and Econometrics

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