scholarly journals The Effect of Ambiguity on Price Formation and Trading Behavior in Financial Markets

2021 ◽  
Author(s):  
Wenhui Li ◽  
Peter Ockenfels ◽  
Christian Wilde
Keyword(s):  
Financial Markets ◽  
Price Formation ◽  
Trading Behavior

A guide on empirical tests of the EMH

2019 ◽  
Vol 18 (2) ◽  
pp. 268-295
Author(s):  
David Peón ◽  
Manel Antelo ◽  
Anxo Calvo
Keyword(s):  
Financial Markets ◽  
Design Methodology ◽  
Recent Literature ◽  
Asset Price ◽  
Efficient Market Hypothesis ◽  
Price Formation ◽  
Content Type ◽  
Economic Fundamentals ◽  
Empirical Tests ◽  
Available Information

Purpose The efficient market hypothesis (EMH) states that asset prices in financial markets always reflect all available information about economic fundamentals. The purpose of this paper is to provide a guide as to which predictions of the EMH seem to be borne out by empirical evidence. Design/methodology/approach Rather than following the classic three groups of tests for the different forms of EMH that are common in the literature, the authors consider how the two alternative definitions of the EMH and the joint hypothesis problem impact on the tests and leave the controversy unsolved. The authors briefly report the antecedents, the main theoretical and empirical contributions and recent literature on each type of tests. Findings Eventually, as a summary for each type of tests, the authors provide a critical view on the main sources of acrimony between the alternative schools of thought in understanding asset price formation. Originality/value The paper may be seen as an up-to-date introductory review for researchers on the different tests of the EMH performed, and for newcomers to understand the key sources of acrimony between rationalists and behaviorists.

TRADER SPECIES WITH DIFFERENT DECISION STRATEGIES AND PRICE DYNAMICS IN FINANCIAL MARKETS: AN AGENT-BASED MODELING PERSPECTIVE

2010 ◽  
Vol 09 (02) ◽  
pp. 327-344 ◽  
Author(s):  
WEI ZHANG ◽  
GEN LI ◽  
XIONG XIONG ◽  
YONG JIE ZHANG
Keyword(s):  
Financial Markets ◽  
Asset Price ◽  
Agent Based Modeling ◽  
Price Dynamics ◽  
Trading Behavior ◽  
Agent Based ◽  
Price Process ◽  
Trading Decisions ◽  
The Individual ◽  
Analytical Approaches

Investors with different trading strategies can be viewed as different "species" in financial markets. Since the asset price is ultimately determined by the individual trading decisions, the combination and evolution of different trader species in financial market ecology will have great impact to the price dynamics. Considering the limitations and shortcomings of traditional analytical approaches in financial economics in dealing with this issue, an agent-based computational model is introduced in this paper. With the co-existence of 3-type trader species that make different decisions based on their own beliefs and constrains, it is found that although rational speculation destabilizes the price process with the presence of positive feedback strategy, as suggested in the literature, introducing extra noise trading behavior to the market will make the price process back to a more stationary situation, meaning that the market will be healthier if more diversified trader species co-exist in the markets.

scholarly journals DO CIRCUIT BREAKERS IMPEDE TRADING BEHAVIOR? A STUDY IN CHINESE FINANCIAL MARKET

2019 ◽  
Vol 64 (05) ◽  
pp. 1-18
Author(s):  
KUN LI
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Circuit Breaker ◽  
Market Liquidity ◽  
Trading Behavior ◽  
Circuit Breakers ◽  
Short Life ◽  
Large Market ◽  
Magnet Effect ◽  
Negative Impacts

As the most influential regulation in 2016, China launched circuit breakers in the financial markets. However, the circuit breaker mechanism was implemented for only four days and then suspended. Many criticisms then stated that circuit breakers impeded trading behavior in Chinese financial markets. This study explores this short-life circuit breaker mechanism in China, and examines whether circuit breakers impede trading behavior in Chinese financial markets as many criticisms stated. We use an intraday dataset and investigate the circuit breakers. Contrary to those criticisms, we find that circuit breakers are not easily reachable and have no “magnet effect” between two thresholds of breakers. We also find that without protection of circuit breakers, potential large market fluctuations will have negative impacts on individual stocks’ liquidity and value. As the major contribution, our study indicates that Chinese financial markets still need a circuit breaker mechanism to protect investors’ benefits and maintain the market liquidity and stability.

scholarly journals Price response functions and spread impact in correlated financial markets

2021 ◽  
Vol 94 (4) ◽  
Author(s):  
Juan C. Henao-Londono ◽  
Sebastian M. Krause ◽  
Thomas Guhr
Keyword(s):  
Financial Markets ◽  
Stock Prices ◽  
Signal Strength ◽  
Price Formation ◽  
Response Functions ◽  
Trading Costs ◽  
Research Focus ◽  
Data Set ◽  
Price Response ◽  
The Impact

AbstractRecent research on the response of stock prices to trading activity revealed long-lasting effects, even across stocks of different companies. These results imply non-Markovian effects in price formation and when trading many stocks at the same time, in particular trading costs and price correlations. How the price response is measured depends on data set and research focus. However, it is important to clarify how the details of the price response definition modify the results. Here, we evaluate different price response implementations for the Trades and Quotes (TAQ) data set from the NASDAQ stock market and find that the results are qualitatively the same for two different definitions of time scale, but the response can vary by up to a factor of two. Furthermore, we show the key importance of the order between trade signs and returns, displaying the changes in the signal strength. Moreover, we confirm the dominating contribution of immediate price response directly after a trade, as we find that delayed responses are suppressed. Finally, we test the impact of the spread in the price response, detecting that large spreads have stronger impact.

Self-Action Effect on Price Formation in Financial Markets

2021 ◽  
Author(s):  
Jack Sarkissian ◽  
Joel Sebold ◽  
Vadim Nastasiuk
Keyword(s):  
Financial Markets ◽  
Price Formation ◽  
Action Effect

PRICE FORMATION BASED ON PARTICLE-CLUSTER AGGREGATION

2005 ◽  
Vol 16 (11) ◽  
pp. 1803-1810 ◽  
Author(s):  
SHIJUN WANG ◽  
CHANGSHUI ZHANG
Keyword(s):  
Financial Markets ◽  
Composite Index ◽  
Small World ◽  
Price Formation ◽  
Historical Records ◽  
Particle Cluster ◽  
Volatility Clustering ◽  
Cluster Aggregation ◽  
Tail Distribution ◽  
World Information

In the present work, we propose a microscopic model of financial markets based on particle-cluster aggregation on a two-dimensional small-world information network in order to simulate the dynamics of the stock markets. "Stylized facts" of the financial market time series, such as fat-tail distribution of returns, volatility clustering and multifractality, are observed in the model. The results of the model agree with empirical data taken from historical records of the daily closures of the NYSE composite index.

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