** Shares of Meesho MEES.NS down 5% at 157.2 rupees
** E-commerce firm's Q3 net loss widens 13x from 374.3 million rupees a year ago
** Co's investment in ads and sales promotion, as share of net merchandise value, nearly doubled to 2.4%
** Expects adjusted core earnings margin to improve in next two quarters, driven by logistics cost recovery, operating leverage on user growth, tech investments
** Morgan Stanley ("Update"; increases PT from 169 rupees to 174 rupees) says contribution margin miss led by higher logistics costs, which the co did not pass on to consumers
**YTD, stock down nearly 13%, down 3.3% since debut on Dec 10, 2025
(Reporting by Mridula Kumar in Bengaluru)
((Mridula.Kumar@thomsonreuters.com;))