What Is FIMU? Fidelity Intermediate Municipal Income Fund ETF

FIMU is Fidelity Intermediate Municipal Income Fund ETF, an ETF that tracks an intermediate national municipal bond index at a 0.30% expense ratio. FIMU holds intermediate national municipal bonds, bundled into one ticker. It is relatively new, launched in 2026. It charges 0.30%.

FIMU is issued by Fidelity and tracks an intermediate national municipal bond index, so a single ticker gives you the whole portfolio of underlying holdings weighted by the index's methodology rather than by any active stock-picking.

FIMU does not hold a basket of individual stocks. It gets its exposure synthetically, through derivatives such as swaps and futures rather than by owning the underlying shares, so there is no conventional top-10 equity holdings list. See the description above for what FIMU actually tracks and how that exposure is built.

There are three common ways to get FIMU exposure. Buy shares (or fractional shares) of FIMU directly at any major broker that lists it. Hold it as a core position and layer more concentrated ideas on top. Or build it into a thematic portfolio in Walnut, so FIMU sits alongside other holdings that express the same thesis, with target weights you can rebalance toward. FIMU trades like a stock during market hours, so you buy it the same way you would any listed share.

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Whether FIMU is a good buy depends less on any single call and more on your time horizon and what you already hold: it tracks an intermediate national municipal bond index, so the real question is whether you want that exposure in your mix and at what weight. We walk through valuation, concentration, and what would have to be true for it to outperform from here in is FIMU a buy?

FIMU gives you an intermediate national municipal bond index exposure in one ticker at a 0.30% expense ratio. Most investors use it as a core holding and layer more concentrated thematic portfolios on top.

Whether FIMU is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, concentration, and what would have to be true for it to outperform from here in is FIMU a buy?

FIMU yields n/a as of August 2026, paid by passing through the dividends of its underlying holdings. For the payout schedule, history, and how the distributions are taxed, see FIMU dividend: yield and schedule.

New to funds like FIMU? Start with what an ETF is, then how to buy an ETF, or browse the full guide to ETF investing.