Risk and Return Around the Clock

48 Pages Posted: 17 May 2015 Last revised: 1 Nov 2015

See all articles by Felix Fattinger

Felix Fattinger

WU Vienna University of Economics and Business

Alexandre Ziegler

University of Zurich - Department of Banking and Finance

Date Written: April 14, 2015


We investigate price discovery over the 24-hour trading day for equities, currencies, bonds, and commodities. Sizable price discovery occurs around the clock for most assets. For a given asset, intraday risk and return distributions are fairly similar, indicating a broadly constant risk-return-relationship during the day. Although the amount of price discovery varies significantly during the day and differs across assets, price discovery is generally efficient around the clock. Most assets do not exhibit the U-shaped intraday volatility pattern that has been documented for US equities, even if only main trading hours are considered. Intraday spikes in volatility are driven by the open or close of the market for the respective asset or other assets and by macroeconomic announcements. Both diffusion and jump risk are important drivers of intraday volatility patterns, and US macroeconomic news account for a sizable fraction of jump-driven volatility. For some -- but not all -- assets, the relationship between volume and volatility that can generally be observed during the trading day does not hold at the time of jumps, suggesting that traders anticipate large price moves at the time of scheduled announcements and market depth falls accordingly.

Keywords: Price discovery, Market efficiency, Intraday return and volatility patterns, High-frequency data, Jumps

JEL Classification: G14, G15, F3

Suggested Citation

Fattinger, Felix and Ziegler, Alexandre, Risk and Return Around the Clock (April 14, 2015). Available at SSRN: https://ssrn.com/abstract=2606706 or http://dx.doi.org/10.2139/ssrn.2606706

Felix Fattinger

WU Vienna University of Economics and Business ( email )

Welthandelsplatz 1, Building D1, 3rd Floor
Vienna, 1020

Alexandre Ziegler (Contact Author)

University of Zurich - Department of Banking and Finance ( email )

Plattenstrasse 14
Z├╝rich, 8032

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