* Shares fall as much as 2.9 pct, biggest in a month
(Recasts lead, adds comments, details in paras 6-8):
* Shares fall as much as 2.9 pct, biggest in a month (Recasts lead, adds comments, details in paras 6-8) SINGAPORE, Aug 2 (Reuters) - DBS Group Holdings Ltd , Southeast Asia’s biggest lender, reported lower-than-expected second-quarter profit on Thursday, sending its shares to an almost one-month low and raising concerns for the outlook of regional banks.