Deals of the day — Mergers and acquisitions
(Updates: Starbucks; Adds: Porta, Bumble, Monte dei Paschi di Siena) Oct 12 (Reuters) — The following bids, mergers, acquisitions and disposals were reported by 2100 GMT on Monday: * Starbucks is not buying Chipotle Mexican Grill, the coffee chain said on Monday, quashing talk of a deal that could have been the largest