A Simple Multimarket Measure of Information Asymmetry
Management Science 64 (2018), 1055-1080
52 Pages Posted: 27 Nov 2012 Last revised: 17 Oct 2018
Date Written: July 19, 2016
We develop and implement a new measure of information asymmetry among traders. Our measure is based on the intuition that informed traders are more likely than uninformed traders to generate abnormal volume in options or stock markets. We formalize this intuition theoretically and compute the resulting measure, MIA, for firm-days as a function of unsigned volume totals and without estimating a structural model. Empirically, MIA has many desirable properties: it is positively correlated with spreads, price impact, and absolute order imbalances; predicts future volatility; is an effective conditioning variable for trading strategies stemming from price pressure; and detects exogenous shocks to information asymmetry.
Keywords: Information asymmetry, PIN, informed trade, options, microstructure, bid-ask spreads, volatility
JEL Classification: G10, G12, G14, G18
Suggested Citation: Suggested Citation