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Amid broadly positive performance across fixed income sectors so far in 2025, municipal bonds have emerged as an outlier. As of July 29, 2025, the Bloomberg Municipal Bond Index has returned -0.79% year to date (YTD), compared to 3.60% for Treasuries, 3.97% for U.S. bonds, 4.44% for investment-grade corporates and 5.15% for high-yield corporates.

For discerning investors willing to look beyond recent performance, this divergence may mark not just a deviation, but a potentially compelling opportunity.

insight_exhibit-1-fl -index-total-returns.png

Source:  Bloomberg, as of July 29, 2025. Past performance is not indicative of future results. For illustrative purposes only. It is not possible to invest directly in an index

An unusually steep curve

Digging deeper, the split within the municipal market is striking. The five-year maturity segment of the municipal index is up 3.07% YTD, while the 22+ year portion is down -4.86%—a 793 basis point (bps) differential. This performance gap has coincided with a steepening in the 5s/30s1 benchmark municipal yield curve, which now sits at 214 bps, more than double the U.S. Treasury curve, at 96 bps.

insight_exhibit-2-muni -yld-cuve-segment-returns.png

Source: Bloomberg, as of July 29, 2025. Past performance is not indicative of future results. For illustrative purposes only. It is not possible to invest directly in an index

This kind of sharp steepness is rare. It has only occurred three times since 2006: the Global Financial Crisis (GFC) of 2007 to 2008, the Meredith Whitney scare of 2010 to 2011,2 and the 2013 Taper Tantrum.3 More broadly, our research shows that since GFC, during periods of sharp curve steepening, long-end municipals have historically performed well, delivering 12-month forward returns averaging approximately 11% and significantly outperforming shorter-maturity municipals.

insight_exhibit-3-muni-5s-30 -s-yld-spread-history.png

Source:  Bloomberg, as of January 31, 2025.  A 5s/30s benchmark refers to a specific aspect of the municipal bond yield curve, focusing on the relationship between the yields of five-year and 30-year maturity municipal bonds. Past performance is not indicative of future results. For illustrative purposes only.

What's driving the dislocation?

The recent weakness in long-end municipal bonds reflects a combination of technical factors shaping the market’s behavior. Following a record-setting 2024, the municipal market may be on pace for another year of elevated issuance. This supply surge has been driven by deal acceleration earlier in the year, prompted by uncertainty around potential changes to the municipal bond tax exemption, rising infrastructure and capital project costs, and the need to fill budget gaps left by depleted COVID-19-era funding. The resulting stream of long-end supply has created a growing imbalance as the market faces challenges to absorb the long-end paper.

We may also be witnessing a shift in investor demand. Much of the recent flows have gone into separately managed accounts (SMAs) and exchange traded funds (ETFs), vehicles that tend to focus on short-to-intermediate maturities. This trend has amplified the supply-demand imbalance for long-end municipal bonds.

A rare setup for taxable and crossover buyers

While many investors are still processing the current dislocation, some buyers are already stepping in.

A recent AAA-rated New York State deal, backed by personal income tax revenues, was priced at a 5.10% yield. For taxable investors, the after-tax equivalent4 would be a corporate bond yielding 8.5%. That breakeven yield jumps to 10.6% for New York State residents, and 11.5% for New York City residents.

In other words, high-quality 5% coupons trading at or below par is a rare occurrence, and historically a strong buy signal for crossover buyers. These include not only individual investors and advisors looking for tax-advantaged income, but also banks and insurance companies, even at the 21% corporate tax rate. We’re already seeing signs of rotation from corporate, investment-grade bonds into municipals among bank portfolios.

Bottom Line: While the municipal market continues to contend with technical pressures, the dislocation at the long end stands out as a potential investment opportunity. Historically, steep municipal curves of this magnitude rarely persist without drawing investor interest, and strong forward returns. For institutional and tax-sensitive buyers, today’s long municipal market may be less an anomaly and more a timely entry point.


1 A 5s/30s benchmark refers to a specific aspect of the municipal bond yield curve, focusing on the relationship between the yields of five-year and 30-year maturity municipal bonds.
2  Whitney issued a call in late 2010 that the muni business was about to implode, resulting in more than $100 billion worth of defaults. Muni bonds sold off aggressively on her muni forecast.
3 The 2013 Taper Tantrum was a period of market turmoil triggered by the Federal Reserve's announcement that it would begin reducing its bond-buying program, known as quantitative easing (QE). The May 2013 announcement by then-Fed Chair Ben Bernanke led to a sharp increase in U.S. Treasury yields and a significant tightening of financial conditions, particularly in emerging markets.
4 Tax-Equivalent Yield, which is provided for illustrative and educational purposes only, and does not reflect the return or likely return of any actual investments. Tax-equivalent yield calculates the return needed on a taxable investment to make it equal the return on a tax-exempt investment and is commonly used when evaluating municipal bond returns against taxable bond returns. The tax-equivalent yield is calculated by dividing the municipal bond’s yield by (1-tax rate), which in this analysis is 40.8%, the highest federal income tax rate, and 10.90% for New York state and 3.88% for New York city. Income from certain types of municipal obligations generally may be subject to the federal alternative minimum tax (the “AMT”) for individuals. Investors subject to AMT should consult their tax advisors.

The recent weakness in long-end municipal bonds reflects a combination of technical factors shaping the market’s behavior. Following a record-setting 2024, the municipal market may be on pace for another year of elevated issuance"


Municipals Team

The Municipals team is one of the largest municipal bond-focused teams in the industry with decades of experience. They strive to meet the income and return goals of investors by offering strategies spanning the entire yield curve and credit spectrum.

The Author

Index definitions

Bloomberg Municipal Bond Index is a benchmark that measures the performance of the U.S. municipal bond market.
Bloomberg US Corporate High Yield Bond Index measures the USD-denominated, high yield, fixed-rate corporate bond market.
Bloomberg US MBS Index
is a benchmark that tracks the performance of mortgage-backed securities (MBS) issued by government-sponsored enterprises like Fannie Mae, Freddie Mac, and Ginnie Mae. It serves as a key indicator for the US mortgage-backed securities market.
Bloomberg US Aggregate Bond Index is a broad-based flagship benchmark that measures the investment grade, US dollar denominated, fixed-rate taxable bond market.
Bloomberg US Taxable Municipal Bonds Index is a benchmark that measures the performance of the US municipal taxable investment-grade bond market. It tracks the performance of these bonds with greater than one year to maturity.
Bloomberg US Leveraged Loan Index measures the performance of the USD-denominated, high-yield, floating-rate, institutional leveraged loan market.
Bloomberg US Treasury Index measures US dollar-denominated, fixed-rate, nominal debt issued by the US Treasury.
Bloomberg High Yield (HY) Municipal Bond Index is a benchmark index designed to measure the performance of the US municipal tax-exempt high yield bond market. 

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