Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Influence of short sales and margin requirements on portfolio efficiency - a DEA-risk approach
Branda, Martin
We focus on efficiency of assets and portfolios available to investors on financial markets. We employ diversification consistent DEA-risk models with CVaR deviations as the inputs and expected rate of return as the output. Moreover, we allow short selling and take into account margin requirements. Our model is then employed in an empirical study where selected assets from US stock market are investigated. The sample approximation technique is used to deal with the multivariate skew-normal distribution of random returns.
Markov Equilibrium between High Frequency Traders
Šmíd, Martin
We model an optimal behaviour of a finite number of (perhaps high frequency) traders at a limit order market with a instrument possibly paying dividends. The traders are assumed to trade continuously and to maximize their discounted consumption while keeping the probability of near-bankruptcy states at a prescribed level. The latency times, ie., the delays between the order submissions and the corresponding order books' changes, are taken into account. We show that the process describing the market is Markov given the largest among information sets of the agents.

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