A2 Milk shares jump 12% on strong half-year result and guidance upgrade

a2 Milk Company Ltd (ASX: A2M) shares are starting the week on a very positive note. In morning trade, the infant formula company’s shares are up 12.5% to $9.60. Investors have been buying its shares after it delivered strong first-half growth and upgraded its full-year outlook. A2 Milk shares jump on results day For the six months ended 31 December, a2 Milk reported revenue of NZ$993.5 million, up 18.8% on the prior corresponding period. Management notes that this was driven by strong performances across all segments and product categories, with growth primarily from core products supported by recent innovation. Total…