Shares of Sun Life Financial Inc SLF were climbing higher on Tuesday, after experiencing volatility ahead of the company's second-quarter earnings.The results came amid an exciting earnings season. Here are some key analyst takeaways.RBC Capital Markets On Sun Life FinancialAnalyst Darko Mihelic maintained an Outperform rating and price target of C$76.Sun Life Financial's second-quarter underlying earnings came in at$1.72 per share, above consensus of $1.58 per share, “primarily reflecting strength in SLF ...