This paper documents that political factors can be linked to the part of stock prices that cannot be explained by the standard present value models. The non-fundamental component of stock market index appears to be significantly influenced by the political orientation of the president and his approval rating, election cycle and military conflicts. The findings presented here indicate that there...

We are the first paper to analyse and confirm the existence and extent of rational informational herding and rational informational contrarianism in a financial market experiment, and to compare and contrast these with the equivalent irrational phenomena. In our study, subjects generally behaved according to benchmark rationality. Moreover, traders who should herd or be contrarian in theory are...

We analyze time series of investor expectations of future stock market returns from six data sources between 1963 and 2011. The six measures of expectations are highly positively correlated with each other, as well as with past stock returns and with the level of the stock market. However, investor expectations are strongly negatively correlated with model-based expected returns. The evidence i...

This paper assesses the day of the week effect of the daily depreciation of the Turkish lira (TL) against the US dollar (USD) and its volatility. The empirical evidence from Turkey presented here suggests that Thursdays are associated with higher and Mondays with lower depreciation rates compared to those of Wednesdays. Moreover, Mondays and Tuesdays are associated with higher volatility than W...

∗Department of Neurology, York District Hospital, Wigginton Road, York YO3 7HE, UK; †The Roald Dahl EEG Unit, Alder Hey Children’s Hospital, Eaton Road, West Derby, Liverpool L12 2AP, UK; ‡Birmingham University Seizure Clinic, Queen Elizabeth Psychiatric Hospital, Edgbaston, Birmingham B15 2QZ, UK; §The National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK; ¶The Su...

Objective To assess clinical and patient-reported outcomes of implant-prosthetic rehabilitations in patients with a history head–neck cancer (HNC), treated tumor resection without (TR) or adjuvant radiotherapy (TR/RT). A healthy cohort rehabilitated the same reconstructive protocols served as control group (C). Materials Methods total 28 women 29 men were considered present retrospective study....

We study the consequences of indexing, i.e. commiting to invest in risky assets only via the market portfolio. We extend the canonical rational expectations model (Grossman and Stiglitz, 1980) to allow for multiple assets and endowment shocks, and show that indexing imposes a negative externality on other uninformed agents. More indexing makes informed trading on the market more profitable, whi...

We are the first paper to analyse and confirm the existence and extent of rational informational herding and rational informational contrarianism in a financial market experiment, and to compare and contrast these with the equivalent irrational phenomena. In our study, subjects generally behaved according to benchmark rationality. Moreover, traders who should herd or be contrarian in theory are...

The overvaluation hypothesis (Miller 1977) predicts that a) stocks are overvalued when there are short selling restrictions and that b) the overvaluation is increasing in the degree of divergence of opinion. We design an experiment that allows us to test these predictions in the laboratory. Our results support the hypothesis that prices are higher in the presence of short selling constraints. T...

The paper analyses a simplified version of a Glosten-Milgrom style specialist security trading model with trade-timing. In a setting where traders are differentially informed, if the best-informed investors have a sufficiently strong or weak impact on prices then the investors with the strongest impact on prices delay their investment strategically, pretending to be the low-impact types. JEL Cl...