** Sun Pharmaceutical SUN.NS gains 4.4% in holiday-curtailed week; set for best weekly performance since late September 2024
** Drugmaker top weekly gainer on Nifty 50 .NSEI and pharma .NIPHARM indexes
** SUN gained in all sessions this week after $355 million deal for Checkpoint Therapeutics CKPT.O
** Analysts backed the deal, saying it would complement SUN's specialty portfolio
** Stock rated "buy" on avg, per data compiled by LSEG
** YTD, SUN down 11% vs NSEI's 4.7% drop
(Reporting by Nandan Mandayam in Bengaluru)
((Nandan.Mandayam@thomsonreuters.com; Mobile: +91 9591011727;))