Showing 1 - 10 of 36
We analyse questions of arbitrage in financial markets in which asset prices change in time as stationary stochastic … framework of this model, we find conditions that are necessary and sufficient for the absence of arbitrage opportunities. We …
Persistent link: https://www.econbiz.de/10005857775
In this paper we construct arbitrage-free market models of stochastic volatility type for one stock, one bank account … of dynamic arbitrage in the market can be characterized in terms of drift restrictions on the model coefficients. Most … provide a class of explicit examples satisfying the no-arbitrage conditions. This allows us to construct arbitrage-free multi …
Persistent link: https://www.econbiz.de/10005857780
,Carhart’s four-factor extension of it adding a momentum factor, and a five-factor extension adding an own-volatility factor. We find … that momentum and own-volatility factors are at least as important if not more important than size and value in explaining …
Persistent link: https://www.econbiz.de/10005857787
We prove that under very weak conditions optimal financial products have to be co-monotone with the inverted state price density. Optimality is meant in the sense of the maximization of an arbitrary preference model, e.g. Expected Utility Theory or Prospect Theory. The proof is based on methods...
Persistent link: https://www.econbiz.de/10005858203
models satisfying the natural static arbitrage bounds across strikes. We next characterize absence of dynamic arbitrage for …, and hence of arbitrage-free multi-strike market models of option prices. …
Persistent link: https://www.econbiz.de/10005858204
no-arbitrage condition between renting and buying a house. It states that the period costs are equal to the rents. The …
Persistent link: https://www.econbiz.de/10005858329
There is an extensive literature claiming that it is often difficultto make use of arbitrage opportunities in financial … markets. Thispaper provides a new reason why existing arbitrage opportunitiesmight not be seized. We consider a world with … short-lived securities,no short-selling constraints and no transaction costs. We show thatto exploit all existing arbitrage …
Persistent link: https://www.econbiz.de/10005858363
We study arbitrage opportunities in diverse markets as introduced by R. Fernholz in [2]. By a change of measure …-equivalent measure change which implies the existence of instantaneous arbitrage opportunities in diverse markets. For this technique to …
Persistent link: https://www.econbiz.de/10005858729
The surge in international asset trade since the early 1990s has lead to renewed interest in models with international portfolio choice, an aspect that was largely cast aside when the ad-hoc portfolio balance models of the 1970s were replaced bymodels of optimizing agents. We develop the...
Persistent link: https://www.econbiz.de/10005857750
Considered here is on-line portfolio management aimed at maximizing the long-run growth of financial wealth. The portfolio is repeatedly rebalanced in response to observed returns on diverse assets. Suppose statistical information and related methods are not available - or deemed too diffcult....
Persistent link: https://www.econbiz.de/10005857758