BlackRock just gave its muni bond lineup a jolt by flipping its High Yield Municipal Fund into a fresh, actively managed ETF: the iShares High Yield Muni Active ETF (HIMU), now trading on the CBOE. This fund isn’t your average sleepy muni play—HIMU is chasing juicy, tax-free income in today’s high-rate world, with a lean 0.42% net expense ratio after a fee trim. 

It's diving deep into the high-yield pool, with at least 65% of its assets in bonds rated BBB or lower—and yes, there’s room for up to 10% in distressed debt if the upside looks good. BlackRock’s betting that active management gives it the edge, letting it pounce on market moves that passive funds might miss. 

HIMU is the latest in BlackRock’s growing arsenal of bond ETFs, aiming to deliver alpha with a punch of flexibility and tax-free appeal.

Finsum: The launch comes as muni bonds are heating up again, with investors and advisors hunting for income and stability in a volatile environment.