Municipal bonds remain a compelling source of tax-advantaged income, but the muni market is also characterized by inefficiencies. Its fragmented structure, uneven liquidity, and inconsistent credit visibility can create pricing gaps that don’t fully reflect fundamentals. In our view, that complexity creates opportunities for active managers to add value through rigorous, bottom-up research.

Looking at 10-year rolling returns since 2018 shows that active strategies have tended to outperform their passive counterparts, highlighting how security selection, credit research, and trading execution can add value over a full market cycle.

Five reasons active management may add value in the muni market

1 Seasonality can create short-term dislocations

Municipal bond supply and demand often shift throughout the year. Issuance frequently increases in the spring, while demand may soften as some investors raise cash for tax payments. Even if issuer fundamentals are unchanged, when bonds hit the market at the same time buyer appetite fades, prices can drop, and yields can rise. That’s where active managers, positioned to leverage resources to respond to these calendar-driven moves, may be helpful.

2 The muni market is largely over-the-counter—and liquidity can be uneven

Most munis trade over the counter through dealers rather than on a centralized exchange. With dealer inventories generally lower in recent years, liquidity can be less consistent, especially during volatile periods. When bonds are harder to source and trading is thinner, price differences can persist longer. This can create potential relative value opportunities, but it also underscores the importance of trading expertise and execution.

3 Changes in the buyer base can move pricing

Different investor types concentrate in different parts of the muni market and often operate under constraints (ratings minimums, sector limits, structure restrictions, maturity preferences). For example, the growth of separately managed accounts has increased demand for shorter maturities, while other mandates may avoid bonds below BBB or certain structures and sectors. When demand is strong in some segments and limited in others, prices may reflect buyer constraints as much as credit quality, creating opportunities for active managers to identify mispricing.

4 Many issuers receive limited analyst coverage

With roughly 60,000 municipal issuers, comprehensive credit coverage is difficult, particularly outside the largest and most frequently traded names. When research coverage is limited, new information may take longer to be reflected in market pricing. In our view, this can contribute to wider valuation gaps, especially among smaller or less well-known issuers, reinforcing the potential value of dedicated credit research.

5 Bond structures can make "similar" munis hard to compare

Munis commonly include features such as higher coupons and call provisions that can change how they react to interest rate movements. A 15-year bond may trade more like a shorter bond if it’s callable and investors expect earlier redemption. This happens because the market typically prices the bond to its call date and focuses on yield-to-call and the cash flows investors expect to receive, reducing the bond’s effective duration and interest rate sensitivity even though the final maturity is 15 years. If market participants don’t fully account for structure and call risk, two similar-looking munis can be priced very differently. Active managers may be better equipped to evaluate these nuances and identify relative value that broad, passive exposure can miss.

The advisor takeaway

Municipal bonds offer potential after-tax income benefits, but they’re not a one-size-fits-all market. Seasonality, over-the-counter trading, shifting buyer constraints, limited credit visibility, and structural complexity can all contribute to pricing inefficiencies. Active management provides a disciplined, research-driven approach to navigating these dynamics, with the ability to identify and capitalize on relative value opportunities that may be overlooked in a passive framework.