Article history: Received 2 March 2015 Received in revised form 19 May 2015 Accepted 26 May 2015 Available online 9 June 2015 Wecombine two concepts of informed trading – contrarian trades and stealth trading – to develop proxies for the probability of informed trading. These proxies are used to test the link between informed trading and adverse selection asmeasuredbybid–ask spreads and stock i...

Recent asset-pricing models incorporate jump risk through Lévy processes in addition to diffusive risk. This paper studies how to detect stochastic arrivals of small and big Lévy jumps with new nonparametric tests. The tests allow for robust analysis of their separate characteristics and facilitate better estimation of return dynamics. Empirical evidence of both small and big jumps based on the...

This paper derives explicit expressions for the asymptotic variances of the maximum likelihood and continuously updated GMM estimators under potentially misspecified models. The proposed misspecification-robust variance estimators allow the researcher to conduct valid inference on the model parameters even when the model is rejected by the data. Although the results for the maximum likelihood e...

This paper examines the effects of selected macroeconomic variables on the stock market index in Iran. Using quarterly data, we examine the relationships between the Tehran Stock Index (TSI) and five macroeconomic variables which consist of gross domestic product, nominal effective exchange rate, money supply, gold coin price and investment in housing sector from 1996:1 to 2008:1.Various e...

In this article we provide evidence for a rational bubble in S&P 500 stock prices by applying a test for changing persistence under fractional integration proposed by Sibbertsen and Kruse (2007). We find strong evidence for stationary long memory before the estimated change point in 1955 and a unit root afterwards. These results bring two empirical findings in line: on one hand they confirm the...

We exploit a novel setting in which the same piece of information affects two sets of firms: one set of firms requires straightforward processing to update prices, while the other set requires more complicated analyses to incorporate the same piece of information into prices. We document substantial return predictability from the set of easy-to-analyze firms to their more complicated peers. Spe...

Natural selection is used to examine a one-sided buyer auction market. With each trader’s behavior preprogrammed with its own inherent and fixed probabilities of overpredicting, predicting correctly and underpredicting the fundamental value of the asset, informational efficiency occurs. If each buyer’s initial wealth is sufficiently small relative to the market supply and if the variation in th...

Salah satu kriteria dalam menentukan varietas tebu unggul adalah memiliki hasil serta stabilitas yang tinggi. Hambatan besarnya pengaruh interaksi genetik x lingkungan. Tujuan dari penelitian ini untuk pada beberapa harapan tebu. Penelitian dilakukan di 4 lokasi yaitu Jatiroto, Malang, Pasuruan dan Madura masa tanam (MT) 2016/2017 MT 2017/2018. Pada digunakan 14 2 bina sebagai kontrol. Rancanga...