Delayed reaction to good news and the cross-autocorrelation of portfolio returns

Article Abstract:

We document a directional asymmetry in the small stock concurrent and lagged response to large stock movements. When returns on large stocks are negative, the concurrent beta for small stocks is high, but the lagged beta is insignificant. When returns on large stocks are positive, small stocks have small concurrent betas and very significant lagged betas. That is, the cross-autocorrelation puzzle documented by Lo and MacKinlay (1990a) is associated with a slow response by some small stocks to good, but not to bad, common news. Time series portfolio tests and cross-sectional tests of the delay for individual securities suggest that existing explanations of the cross-autocorrelation puzzle based on data mismeasurement, minor market imperfections, or time-varying risk premiums fail to capture the directional asymmetry in the data. (Reprinted by permission of the publisher.)

Economics, Investments, Return on investment, Information theory, Rate of return, Information theory in economics

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Quotes, order flow, and price discovery

Article Abstract:

The goal of this article is to examine the impact of 1975 Congressional mandate to integrate the trading of NYSE-listed stocks. The conclusions are: most of the time, the New York Stock Exchange (NYSE) quote matches or determines the best displayed quote, and the NYSE is the most frequent initiator of quote changes. Non-NYSE markets attract a significant portion of their volume when they are posting inferior bids or offers, indicating they obtain order flow for other reasons, such as "payment for order flow." Yet, when a non-NYSE market does post a better bid or offer, it does attract additional order flow. (Reprinted by permission of the publisher.)

Laws, regulations and rules, Stocks, New York Stock Exchange Inc.

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