NEW YORK–(BUSINESS WIRE)–While overall retirement confidence is up year over year for Americans according to BlackRock’s ninth annual Read on Retirement™ survey, a closer look at the data reveals rising optimism is not consistent for all respondents, and many are uncertain about long-term planning. Multiple groups of respondents across generation and gender cohorts reported confusion about how much to save, worries about outliving savings, and uncertainty in how much income they will need in