** Shares of information technology firm DocuSign jump 5.65% to $66.33 in after-market hours
** DOCU will be added to the S&P MidCap 400 index on Oct. 11, S&P Dow Jones Indices said late on Monday
** DOCU will replace MDU Resources Group Inc
** As of Monday's close, DOCU up 5.7% YTD
(Reporting by Jaiveer Singh Shekhawat in Bengaluru)
((JaiveerSingh.Shekhawat@thomsonreuters.com;))