GlaxoSmithKline Pharmaceuticals reported financial results for the first quarter of 2010 that were ahead of estimates. Net sales increased 18.4% year-over-year to Rs541.1 crore, driven by growth in the vaccine and dermatology segments. Operating margin expanded to 37% from 36% in the prior year quarter due to an improved product mix. Net profit grew 12.6% to Rs161.2 crore. The analyst maintains a "Reduce" rating on the stock and sets a target price of Rs1,700, citing rich valuations of 29.1 times estimated 2010 earnings.