Beginnings Bachelier (1900) was the earliest to correctly model Brownian motion mathematically. In 1900, he defended his thesis Théorie de la Spéculation about the use of Brownian motion in pricing stock options. He was truly before his time. In particular, he made the connection between random walk and Brownian motion in continuous time. The random walk has of course been a topic of intense in...

We attempt to reconcile Gabaix and Koijen's (GK) recent Inelastic Market Hypothesis with the order-driven view of markets that emerged within microstructure literature in past 20 years. review most salient empirical facts arguments give credence idea market price fluctuations are mostly due order flow, whether informed or non-informed. show Latent Liquidity Theory impact makes a precise predict...

Information and communication technologies (ICTs) are the cornerstone for sustainable development, but if they not appropriately managed, will impede progress towards United Nations Global Sustainable Development Goals. Among undesirable impacts, emphasis must be put on risk of information security (ISec) breaches, as pose a potential threat to businesses there. Especially publicly traded firms...

This paper considers the problem of learning the ranking of' a set of' stochastic alternatives based upon incomplete information (i.e., a limited number of samples). We describe a system that, at each decision cycle, outputs either a complete ordering on the hypotheses or decides to gather additional information (Le., observations) at some cost. The ranking problem is a generalization of the pr...

The study attempts to identify the presence of randomness in socially responsible indices (SRI) stock markets developed and emerging economies. 9 5 economies were considered for test on daily, weekly, monthly, quarterly semiannual return their benchmark indices. Shapiro-Wilk is used data's normality, whereas runs Augmented Dickey-Fuller are find data. It has been observed that market could be m...