** Grasim Industries' GRAS.NS shares climb 2.2% to 2,751.9 rupees
** Top gainer on Nifty 50 .NSEI index, which is up 0.2%
** Aditya Birla Group holding company's Q1 EBITDA of 3.85 bln rupees ($44 mln) topped Jefferies and Morgan Stanley estimates
** Higher caustic soda volumes drove beat, new businesses like Birla Opus "delivering strongly on expectations" - Jefferies
** Jefferies and Motilal raise PT on stock to joint-street-high of 3,500 rupees
** At least 4 analysts raise PT, pushing median PT to 3,266.5 rupees vs 3,225 rupees month ago - data compiled by LSEG
** Eight analysts rate GRAS "buy" on avg - LSEG
** YTD, GRAS up 12.4% vs Nifty 50 3% gain
($1 = 87.5037 Indian rupees)
(Reporting by Nandan Mandayam in Bengaluru)
((Nandan.Mandayam@thomsonreuters.com; Mobile: +91 9591011727;))