What do you use as a core bond fund? I'm looking for options that help serve as ballast against equity downturns, not something that has big exposure to high yield. Many multi-sector and core plus bond funds ramp up their exposure to high yield (10-20%) as a means of boosting returns and yield. Other funds seems to use the mortgage sector as a way of sidestepping interest rate hikes, but what happens when those sectors go south? I guess I'm looking for something that successfully spreads its bets between corporates, treasuries and MBS without dipping heavily into high yield.