{ "id": "1103.1460", "version": "v2", "published": "2011-03-08T08:23:14.000Z", "updated": "2012-09-11T07:49:36.000Z", "title": "On the drawdown of completely asymmetric Levy processes", "authors": [ "Aleksandar Mijatovic", "Martijn R. Pistorius" ], "comment": "applications added, 26 pages, 3 figures, to appear in SPA", "categories": [ "math.PR", "q-fin.RM" ], "abstract": "The {\\em drawdown} process $Y$ of a completely asymmetric L\\'{e}vy process $X$ is equal to $X$ reflected at its running supremum $\\bar{X}$: $Y = \\bar{X} - X$. In this paper we explicitly express in terms of the scale function and the L\\'{e}vy measure of $X$ the law of the sextuple of the first-passage time of $Y$ over the level $a>0$, the time $\\bar{G}_{\\tau_a}$ of the last supremum of $X$ prior to $\\tau_a$, the infimum $\\unl X_{\\tau_a}$ and supremum $\\ovl X_{\\tau_a}$ of $X$ at $\\tau_a$ and the undershoot $a - Y_{\\tau_a-}$ and overshoot $Y_{\\tau_a}-a$ of $Y$ at $\\tau_a$. As application we obtain explicit expressions for the laws of a number of functionals of drawdowns and rallies in a completely asymmetric exponential L\\'{e}vy model.", "revisions": [ { "version": "v2", "updated": "2012-09-11T07:49:36.000Z" } ], "analyses": { "subjects": [ "60G51", "60G17" ], "keywords": [ "asymmetric levy processes", "asymmetric exponential", "explicit expressions", "first-passage time", "scale function" ], "note": { "typesetting": "TeX", "pages": 26, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2011arXiv1103.1460M" } } }