NB Private Equity Partners, the former listed private equity vehicle of failed US bank Lehman Brothers, has reported its largest monthly fall in net asset value since February 2009 as the uncertainties continue for the listed private equity market.

In a statement, NB said its portfolio's NAV -- the manager's valuation of the vehicle's portfolio -- had fallen 1.4% in August, the largest decline since February 2009 when it suffered a 3.2% decline and only the vehicle's fourth reverse in that two-and-a-half year period.