Monday, October 12, 2009

Trading in U.S. Airline Stocks

Though not specifically legal in terms of subject matter, Sylwia Nowak's working paper, How do Public Announcements Affect the Frequency of Trading in U.S. Airline Stocks? (Centre for Applied Macroeconomic Analysis Working Paper No. 38, 2008, Nov. 2008) (available from SSRN here), may be of interest.  From the abstract:

This paper examines how news releases, key microstructure features of market activities and crude oil futures returns affect trading frequency in U.S. airline stocks. Using the autoregressive conditional hazard framework of Hamilton and Jorda (2002), we show that on average, trading intensity spikes prior and consequent to macroeconomic announcements, but decreases around firm-specific releases. We find that market microstructure variables have a small yet significant effect on trading frequency, with high trade volume and narrow bid/ask spread inducing higher trading intensity. Strong evidence is provided to indicate that the intraday crude oil futures returns are relevant for model.

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