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Random walks in stock exchange prices and the Vienna Stock Exchange

Authors: Huber, Peter;

Random walks in stock exchange prices and the Vienna Stock Exchange

Abstract

This paper uses the multiple variance ratio test procedure developed by Chow and Denning (1993) to test for a random walk of stock returns on the Austrian Stock Exchange. I find that with daily data the test rejects the random walk hypothesis at all conventional significance levels for each and every title and for both indeces tested. Individual shares, however, do seem to follow a random walk when weekly returns are considered, while the hypothesis is rejected for both indices.

Dieser Artikel überprüft die Random Walk Hypothese mittels des von Chow und Denning (1993) entwickelten Variance Ratio Tests auf dem österreichischen Aktienmarkt. Tägliche Renditen folgen keinem Random Walk. Die Nullhypothese wird für jede Aktie auf allen üblichen Signifikanzniveaus abgelehnt. Wöchentliche Renditen scheinen eher einem Random Walk zu folgen, während bei wöchentlichen Renditen der Indizes die Nullhypothese ebenfalls abgelehnt werden kann.

Keywords

ddc:330, G14, jel: jel:G14

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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