** Shares of Gretex Corporate Services Ltd NSE:GCSL rise as much as 3.8% to a record high of 389.4 rupees
** Co says unit Gretex Share Broking proposes to undertake an Initial Public Offering (IPO)
** Adds, IPO may comprise a fresh issue of equity shares and/or an offer for sale
** Stock on track to gain for fifth straight week; up ~1% so far this week
** GREO last up 1.5%; gained ~36% so far since listing on Sept. 4