HSBC Holdings' US$13.6 billion bid to take full control of Hang Seng Bank could be enticing enough for investors to cash out as the deal creates long-term value for the London-based bank, although some analysts said the offer could be sweeter. On Thursday, HSBC offered to acquire the remaining 36.5 per cent stake in Hang Seng Bank it does not own at HK$155 per share, a 30 per cent premium over the previous closing price. The bank owns 63.5 per cent of Hong Kong's largest domestic bank. The proposal value ...