After Lehman default (credit crisis which started in 2007), practitioners considered the default risk as a major risk. The Industry began to charge for the default risk of any derivatives. In this article we try to extend the work of V.Piterbarg who established the fundamental of a new world in...

This paper proposes a generalized arbitrage-free macro finance term structure model with both Nelson-Siegel latent yield factors and observable macro factors. Two subclasses are derived: spanned and unspanned models. In the spanned model, the yields are determined by both the Nelson-Siegel yield...

This paper proves the Fundamental Theorem of Asset Pricing with transaction costs, when bid and ask prices follow locally bounded cadlag (right-continuous, left-limited) processes. The Robust No Free Lunch with Vanishing Risk (RNFLVR) condition for simple strategies is equivalent to the...

This paper proposes a paradigm shift in the valuation of long term contracts, away from classical no-arbitrage pricing towards pricing under the real world probability measure. In contrast to risk neutral pricing, which is a form of relative pricing, the long term average excess return of the...

Extending Shleifer and Vishny (1997), we show that arbitrageurs will strategically limit their initial investment in an arbitrage opportunity in anticipation of further mispricing caused by the deepening of noise traders' misperceptions. Such ‘noise momentum' is an important determinant of the...

In this work, we identify the most general measure of arbitrage for any market model governed by Ito processes. We show that our arbitrage measure is invariant under changes of numeraire and equivalent probability. Moreover, such measure has a geometrical interpretation as a gauge connection....

The Black-Scholes theory for a portfolio with an arbitrary number of shares, x, is expanded for the case of finite liquidity. The analytical results are derived for linear market impact. As in the case of infinite liquidity (Schmidt, 2003), the arbitrage-free condition yields option price that...