This study investigates whether the COVID-19 pandemic has caused asset price bubbles in stock and oil markets United States Malaysia. More specifically, seeks to detect onset end of possible speculative their causes these markets. It also examines existence a contagion effect between during Covid-19 pandemic. To achieve objectives, used Generalized SADF (GSADF) developed by Phillips et al. (201...

Establishing unambiguously the existence of speculative bubbles is an ongoing controversy complicated by the need of defining a model of fundamental prices. Here, we present a novel empirical method which bypasses all the difficulties of the previous approaches by monitoring external indicators of an anomalously growing interest in the public at times of bubbles. From the definition of a bubble...

We present a dynamic theory of prices and volume in asset bubbles. In our framework, predictable price increases endogenously attract short-term investors more strongly than long-term investors. Short-term investors amplify volume by selling more frequently, and they destabilize prices through positive feedback. Our model predicts a lead–lag relationship between volume and prices, which we conf...

A deterministic trading strategy by a representative investor on a single market asset, which generates complex and realistic returns with its first four moments similar to the empirical values of European stock indices, is used to simulate the effects of financial regulation that either pricks bubbles, props up crashes, or both. The results suggest that regulation makes the market process appe...

Investor herding behavior is a primary source of speculative bubbles since it implies that investors make identical trading decisions, which can lead to stock prices deviating from their underlying worth. The goal this study detect in the Indonesian market between 2016 and 2021. relationship return volume, known as Cross Sectional Absolute Deviation, used assess (CSAD). Time-series regression q...

this paper surveys the persian monetary crises due to economic sanctions and speculative attacks that leads to high inflation. economic sanctions are associated with various forms of trade barriers and restriction on financial transactions. among the most influential sanctions on iran's oil export and central bank sanctions are noted that their aims to reduce iran's oil revenues and devaluation...

Hydrodynamics of multiple rising bubbles as a fundamental two-phase phenomenon is studied numerically by lattice Boltzmann method and using Lee two-phase model. Lee model based on Cahn-Hilliard diffuse interface approach uses potential form of intermolecular forces and isotropic finite difference discretization. This approach is able to avoid parasitic currents and leads to a stable procedure t...

The credit market continues to be the main mechanism for financing investments in developing countries, particularly in Morocco. In this sense, monetary and macro-prudential policies require the inclusion of this market in macroeconomic analysis. In this article, we use the model proposed by Bernanke et al. (1999) "BGG" in the case of Morocco to answer two main questions: is there a mechanism f...

It is widely agreed that the Nasdaq during dot-com era 20 years ago was a full-fledged stock market bubble. Recently, US according to many metrics has become significantly more speculative and overvalued than it at peak ago. In both instances, very broad subset of stocks became so highly valued speculation in them had be untethered from all fundamentals: essence what we call “pure price-chasing...

The aim of this paper is to propose a heterogeneous agent model of stock markets that develop complicated endogenous price fluctuations. We find occurrences of non-stationary chaos, or speculative bubble, are caused by the heterogeneity of traders’ strategies. Furthermore, we show that the distributions of returns generated from the heterogeneous agent model have fat tails, a remarkable stylize...