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Open Access. Powered by Scholars. Published by Universities.®

Economics

Singapore Management University

2015

Market efficiency

Articles 1 - 2 of 2

Full-Text Articles in Business

Cointegration Of Matched Home Purchases And Rental Price Indexes: Evidence From Singapore, Badi H. Baltagi, Jing Li Nov 2015

Cointegration Of Matched Home Purchases And Rental Price Indexes: Evidence From Singapore, Badi H. Baltagi, Jing Li

Research Collection School Of Economics

This paper exploits the homogeneity feature of the Singapore private residential condominium market and constructs matched home purchase price and rental price series using the repeated sales method. These matched series allow us to conduct time series analysis to examine the long-term present value relationship in the housing market. Three key findings are obtained. First, we fail to establish a cointegrating relationship between the home purchase price and rental price based on nationally estimated indexes. Second, area-specific indexes demonstrate strong cross-correlations, invalidating the use of first generation panel unit root tests that ignore these cross-correlations. Third, Pesaran's CIPS test indicates …


Competition Of The Informed: Does The Presence Of Short Sellers Affect Insider Selling?, Massimo Massa, Wenlan Qian, Weibiao Xu, Hong Zhang Nov 2015

Competition Of The Informed: Does The Presence Of Short Sellers Affect Insider Selling?, Massimo Massa, Wenlan Qian, Weibiao Xu, Hong Zhang

Research Collection Lee Kong Chian School Of Business

We study how the presence of short sellers affects the incentives of the insiders to trade on negative information. We show it induces insiders to sell more (shares from their existing stakes) and trade faster to preempt the potential competition from short sellers. An experiment and instrumental variable analysis confirm this causal relationship. The effects are stronger for "opportunistic" (i.e., more informed) insider trades and when short sellers' attention is high. Return predictability of insider sales only occurs in stocks with high short-selling potential, suggesting that short sellers indirectly enhance the speed of information dissemination by accelerating trading by insiders. …