Vanguard’s finally climbing its way up the ladder. The world’s second-largest issuer filed this week to launch 10 corporate bond ladder ETFs, years after products from top competition like BlackRock and Invesco. The new defined-maturity funds package bonds with similar face values and end dates into a single product and give advisors a way to plan for major life events, like paying for college or funding retirement. The Vanguard funds have maturity dates between 2027 and 2036 and will look to undercut the ...