Showing 1 - 10 of 10
We present a self-consistent model for explosive financial bubbles, which combines a mean-reverting volatility process and a stochastic conditional return which reflects nonlinear positive feedbacks and continuous updates of the investors' beliefs and sentiments. The conditional expected returns...
Persistent link: https://www.econbiz.de/10003970340
-agent model with a representative investor and a fund manager in an asymmetric information framework. This model shows that the … Fee ; Mutual Fund ; Asymmetric Information ; Principal-Agent Relationship ; Markup …
Persistent link: https://www.econbiz.de/10009561613
We present a careful analysis of possible issues of the application of the self-excited Hawkes process to high-frequency financial data and carefully analyze a set of effects that lead to significant biases in the estimation of the "criticality index'' n that quantifies the degree of endogeneity...
Persistent link: https://www.econbiz.de/10010257507
% in 1998 to less than 30% since 2007 of the price changes resulting from some revealed exogenous information. Analogous to …
Persistent link: https://www.econbiz.de/10009561617
main tool of our theory is the parsimonious encoding of all the information contained in the OHLC prices for a given time …
Persistent link: https://www.econbiz.de/10003971110
Persistent link: https://www.econbiz.de/10003961709
We introduce a novel description of the dynamics of the order book of financial markets as that of an effective colloidal Brownian particle embedded in fluid particles. The analysis of a comprehensive market data enables us to identify all motions of the fluid particles. Correlations between the...
Persistent link: https://www.econbiz.de/10010337982
We report strong evidence that changes of momentum, i.e. "acceleration", defined as the first difference of successive returns, provide better performance and higher explanatory power than momentum. The corresponding Γ-factor explains the momentum-sorted portfolios entirely but not the reverse....
Persistent link: https://www.econbiz.de/10011411974
We introduce a model for portfolio selection with an extendable investment universe where the agent faces a trade-off between exploiting existing and exploring for new investment opportunities. An agent with mean-variance preferences starts with an existing investment universe consisting of a...
Persistent link: https://www.econbiz.de/10012271124
We propose a dynamic Rational Expectations (RE) bubble model of prices with the intention to exploit it for and evaluate it on optimal investment strategies. Our bubble model is defined as a geometric Brownian motion combined with separate crash (and rally) discrete jump distributions associated...
Persistent link: https://www.econbiz.de/10011865575