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start from two simple, economically motivated axioms, namely absence of arbitrage (in the sense of NUPBR) and absence of … relative arbitrage among all buy-and-hold strategies (called static efficiency). A valuation process for a payoff is then … valuing by absence of arbitrage alone. We show that this always yields put-call parity, although put and call values …
Persistent link: https://www.econbiz.de/10011514353
On October 26, 2008, Porsche announced a largely unexpected domination plan for Volkswagen. The resulting short squeeze in Volkswagen's stock briefly made it the most valuable listed company in the world. We argue that this was a manipulation designed to save Porsche from insolvency and the...
Persistent link: https://www.econbiz.de/10011875647
In the data mining and machine learning fields, forecasting the direction of price change can be generally formulated as a supervised classfii cation. This paper attempts to predict the direction of daily changes of the Nasdaq Composite Index (NCI) and of the Standard & Poor's 500 Composite...
Persistent link: https://www.econbiz.de/10011900252
We study mean-variance hedging under portfolio constraints in a general semimartingale model. The constraints are formulated via predictable correspondences, meaning that the trading strategy is restricted to lie in a closed convex set which may depend on the state and time in a predictable way....
Persistent link: https://www.econbiz.de/10009558290
absence-of-arbitrage property of S, and is invariant if we replace the reference measure P with an equivalent measure Q. Now …
Persistent link: https://www.econbiz.de/10009558691
product ZS is a P-sigma-martingale. Existence of a P-sigma-martingale density is equivalent to a classic absence-of-arbitrage …
Persistent link: https://www.econbiz.de/10011296922
Kindleberger and Robert Shiller have documented that irrational behavior, ambiguous information or certain limits to arbitrage are …
Persistent link: https://www.econbiz.de/10011900246
We investigate a deterministic criterion to determine whether a diffusive local martingale with a single jump and state-dependent characteristics is a uniformly integrable martingale. We allow the diffusion coefficient, the jump hazard rate and the relative jump size to depend on the state and...
Persistent link: https://www.econbiz.de/10011762245
In general multi-asset models of financial markets, the classic no-arbitrage concepts NFLVR and NUPBR have the serious … introduce a new way of defining “absence of arbitrage”. It rests on the new notion of a strategy being strongly share maximal … absence-of-arbitrage concepts do not change when we look at discounted or undiscounted prices, and they can be used in open …
Persistent link: https://www.econbiz.de/10011899592
equivalent sigma-martingale measure for the price process, and the equivalence of no arbitrage of the fi rst kind to the …
Persistent link: https://www.econbiz.de/10009554744