** Shares of Australia's Nuix NXL.AX rise as much as 3.5% to A$2.98; set for biggest weekly gain since the week-ended August 29
** Stock has gained 21.5% so far this week
** Investigation software provider on Wednesday said that it won a multi-year contract to supply forensic analysis software to tax authority of German state Rhineland-Palatinate
** Nuix to provide technology to streamline and accelerate audits and investigations
** Around 1.4 mln shares change hands; nearly 1.1x 30-day average
** NXL currently up 1.2%, YTD down 53.9%
(Reporting by Keshav Singh Chundawat in Bengaluru)
((Keshav.SinghChundawat@thomsonreuters.com))