Abstract
We study the high-frequency propagation of shocks across international equity markets. We identify intraday shocks to stock prices, liquidity, and trading activity for 12 equity markets around the world based on non-parametric jump statistics at the 5-minute frequency from 1996 to 2011. Shocks to prices are prevalent and large, with regular spillovers across markets – even within the same 5-minute interval. We find that price shocks are predominantly driven by information rather than liquidity. Consistent with the information channel, price shocks do not revert and often occur around macroeconomic news announcements. Liquidity shocks tend to be isolated events that are neither associated with price shocks nor with liquidity shocks on other markets. Our results challenge the widespread view that liquidity plays an important role in the origination and propagation of financial market shocks.
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