Municipal bonds just recorded their strongest monthly run in three years, strengthened by impressive ETF inflows. According to Nuveen’s Muni Minute commentary, lower supply paired with resilient investor demand propelled the Bloomberg Municipal Bond Index to a 3.62% October return — its best showing since November 2023. With the Federal Reserve holding interest rates steady and muni yields dropping across the curve, advisors may find compelling entry points in high-yield muni bond ETFs.
Key Takeaways
- The Bloomberg Municipal Bond Index surged 3.62% last month, marking the sector's best monthly performance since late 2023.
- Year-to-date muni fund inflows reached $79 billion, with tax-loss swaps driving $3.5 billion into ETFs. Meanwhile, open-end mutual funds lost $1.8 billion in a single week.
- Muni high yield delivered a 1.67% return year-to-date, dramatically outperforming investment-grade muni counterparts amid tight credit spreads.
Supply Squeeze & Curve Dynamics Fuel the Rebound
The recent muni rebound stems directly from a supply-demand imbalance. As issuers took a wait-and-see approach ahead of the recent FOMC meeting and midterm election cycles, weekly volume dropped to $9.2 billion, enabling cash-heavy buyers to clear paper quickly, according to the Nuveen report. Benchmark two-year and 10-year muni yields fell by 7 and 8 basis points, respectively.
Yield curves have continued to steepen, pushing the spread between 10-year and 30-year paper to 139 basis points, according to the report. Short-dated paper appears relatively expensive; however, long-dated bonds present attractive relative value.
The 30-year muni-to-Treasury ratio settled at 91%, near its historical norm of 92%, offering a 30-year taxable-equivalent yield of 8.16% for top-bracket taxpayers, according to the report.
High-Yield Muni ETFs: Capitalizing on Spread Stability
While broad investment-grade muni indices posted mild losses year-to-date (AAA munis dipped 1.09% and the Municipal Aggregate index fell 0.71%), high-yield munis advanced 1.67%.
High-yield muni funds experienced six consecutive weeks of mutual fund outflows, losing $546 million last week. However, secondary market credit spreads have sound balance sheets and steady local revenues.
Advisors seeking to capture these yield premiums in an ETF often look to actively managed strategies. The Nuveen High Yield Municipal Income ETF (NHYM) provides targeted exposure to lower-rated and non-rated municipal credits. It maintains an effective maturity profile above 10 years to capture elevated yields down-curve. NHYM offers tax-exempt cash flow without taking on corporate default exposure.
Passive alternatives in the space include the VanEck Short High Yield Muni ETF (SHYD) and the SPDR Nuveen Bloomberg High Yield Municipal Bond ETF (HYMB).
Broad Muni Allocations Alongside High-Yield ETFs
The ongoing rotation from mutual funds into ETFs — bolstered by tax-loss harvesting — also benefits core laddered strategies. Northern Trust ETFs has expanded its footprint across the municipal spectrum with funds like the Northern Trust Tax-Exempt Bond ETF (TAXT) and the Northern Trust Short-Term Tax-Exempt Bond ETF (TAXS). These low-cost funds help advisors finetune duration exposure without sacrificing liquidity.
With supply expected to remain light and taxable-equivalent yields exceeding 8% on the long end, pairing high-yield vehicles with core index exposures could offer a balanced path to lock in tax-exempt income before refunding supply rebounds.
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