APMU vs TAXI

APMUCActivePassive Intermediate Municipal Bond ETF

TAXIANorthern Trust Intermediate Tax-Exempt Bond ETF

In short

APMU The name is the strategy: an index-tracking muni core plus an active sleeve from GW&K, aimed at federally tax-free income with low volatility of principal in the 1-10 year slice of the curve.

TAXI The middle rung of Northern Trust's three-part muni lineup: intermediate maturities of 1 to 15 years, thousands of investment-grade bonds, federally tax-exempt income paid monthly, all for five basis points.

Stated mandate

APMU The Fund seeks current income exempt from federal income taxes while maintaining relatively low volatility.

TAXI The fund seeks to track the performance of the ICE Intermediate Term Focused Municipal Bond Index before fees and expenses. It is designed for tax-exempt income through passively managed, investment-grade municipal bonds with intermediate maturities of 1–15 years.

Why people hold it

• APMU Literal name: the adviser runs an index-tracking sleeve against the Bloomberg Municipal 1-10 Year Blend Index while GW&K manages an active sleeve. Two jobs, one ticker.sec.govsec.gov 2
• Tight mandate: at least 80% of net assets in US municipal bonds exempt from federal income tax and rated investment grade or better.sec.gov
• Income arrives monthly, and the portfolio has hewed closely to the muni mandate its prospectus describes.

• TAXI Charges 0.05% where the typical muni fund charges 0.30%. That ties iShares' MUB and sits within a hair of the Vanguard and Schwab giants at the top of the aisle.
• Roughly 2,500 investment-grade municipal bonds, sampled to track the ICE Intermediate Term Focused Municipal Bond Index. Breadth, not bond-picking, carries the credit risk.flexshares.com
• Income is exempt from federal tax and paid monthly, and the index only counts bonds that also dodge the federal alternative minimum tax.stockanalysis.com
• One setting on a three-position dial: short (TAXS), intermediate (TAXI) and all-maturity (TAXT) from the same desk, so you can shift rate exposure without switching shops.northerntrust.com

Worth knowing

• APMU Cost is the trade-off: 0.35% a year, near the category median, while index-based rivals run leaner (TAXI 0.05%, ITM 0.18%, EVIM 0.11% net of a waiver through February 1, 2027).
• It trades thinly next to the category's big index names, so spreads can be wider and size can be harder to move.
• The active sleeve can push results away from the 1-10 year benchmark in either direction, and muni prices still swing with rates and credit.sec.gov

• TAXI It opened in August 2025. The record is short, so there is little history to judge it against older muni funds.
• Trades lightly next to the category's household names, and its asset base is modest, which can show up as wider spreads at the moment you transact.
• The 1 to 15 year band is a middle seat: less rate whiplash than long-dated munis, more price movement than a short-maturity fund. Bonds here still move when yields do.flexshares.com

Full APMU profile⁠

Full TAXI profile⁠