The Role of Daytime Stock Auctions in Intraday Return Seasonality

Ekaterina Serikova

No 1914, Working Papers on Finance from University of St. Gallen, School of Finance

Abstract: The paper provides a fresh look at the role of daytime auctions in intraday periodicity of stock returns. First, I show that daytime auctions, together with market opening and market closing intervals, drive the periodicity of stock returns. Second, by applying the model of infrequent rebalancing, I find that price impact is the highest during the fifteen-minute interval after daytime auctions. Combining this evidence with high realized returns, high volume changes and high return volatility, I conclude that after-auction periods take over a large share of infrequent rebalancing, being attractive for a concentration of liquidity traders. Small, low-fragmented stocks heavily traded on the home market show the strongest evidence for infrequent rebalancing after the daytime auctions. Finally, I show that post-auction returns predict returns before the US market opening and before the domestic market closing, which might be further evidence on clustered liquidity trading.

Keywords: Market microstructure; market design; auctions; intraday periodicity (search for similar items in EconPapers)
Pages: 59 pages
Date: 2019-07
New Economics Papers: this item is included in nep-des and nep-mst
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Persistent link: https://EconPapers.repec.org/RePEc:usg:sfwpfi:2019:14

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