News & Insights

AMG Partners with GW&K Investment Management to Launch Active Muni Bond ETF

WEST PALM BEACH, FL, October 30, 2025 AMG, a strategic partner to leading independent investment management firms globally, in partnership with its Affiliate GW&K Investment Management, announced the launch of the AMG GW&K Muni Income ETF (MUNX), which began trading on the New York Stock Exchange (NYSE) today.

MUNX is managed by GW&K’s seasoned municipal bond team: John B. Fox, CFA (Partner and Director of Fixed Income), Kara M. South, CFA (Partner, Municipal Bond Portfolio Manager), Martin R. Tourigny, CFA (Partner and Portfolio Manager), and Brian T. Moreland, CFA (Partner and Portfolio Manager). Together, they bring decades of experience and a deep understanding of the municipal bond market, underpinned by GW&K’s rigorous credit research and active portfolio management approach.

“Our team is excited to bring our municipal bond expertise to the active ETF market,” said Kara South, Portfolio Manager at GW&K Investment Management. “MUNX reflects our disciplined, research-driven approach and our commitment to helping investors achieve tax-exempt income through municipal investments.”

MUNX seeks to generate current income exempt from federal income tax, primarily through a diversified portfolio of investment-grade municipal bonds. The Fund leverages GW&K’s bottom-up, fundamental research and rigorous credit analysis to uncover opportunities across the municipal landscape. The team has the flexibility to invest in below-investment-grade securities while actively managing duration in response to interest rate shifts.

With more than $33 billion in municipal assets under management, GW&K is a market leader and pioneer in municipal bond investing, having managed such portfolios for clients since its founding in 1974. GW&K’s investment approach is active, flexible, and rooted in disciplined research to preserve and enhance principal and income. The firm offers a range of actively managed municipal solutions across open-end funds and separately managed accounts (SMAs)—providing U.S. wealth investors with high-quality municipal bond exposure tailored to meet clients’ individual investment goals and preferences.

“We are excited to collaborate with GW&K in broadening its municipal bond platform by offering clients access to a wider range of investment vehicles,” said Rachel E. Jacobs, Head of Client Solutions at AMG. “The launch of the AMG GW&K Muni Income ETF underscores our commitment to providing flexible solutions designed for today’s market environment and evolving client needs—including the growing demand for both actively managed ETFs and municipal bond strategies.”

To learn more about the AMG GW&K Muni Income ETF (MUNX), visit www.amgetfs.com/munx.

About AMG

AMG (NYSE: AMG) is a strategic partner to leading independent investment management firms globally. AMG’s strategy is to generate long‐term value by investing in high-quality independent partner-owned firms, through a proven partnership approach, and allocating resources across AMG’s unique opportunity set to the areas of highest growth and return. Through its distinctive approach, AMG magnifies its Affiliates’ existing advantages and actively supports their independence and ownership culture. As of June 30, 2025, AMG’s aggregate assets under management were approximately $771 billion across a diverse range of private markets, liquid alternative, and differentiated long-only investment strategies. For more information, please visit the Company’s website at www.amg.com.

AMG Media & Investor Relations:
Patricia Figueroa
(617) 747-3300
[email protected]
[email protected]

All data as of June 30, 2025, unless otherwise noted.

The Fund’s principal risks include but are not limited to the following:
ETF Structure Risks—the Fund is structured as an ETF and is subject to special risks.
Debt Securities Risk—the value of a debt security changes in response to various factors, including, for example, market-related factors, such as changes in interest rates or changes in the actual or perceived ability of an issuer to meet its obligations. Investments in debt securities are subject to, among other risks, credit risk, interest rate risk, extension risk, prepayment risk, and liquidity risk.
Municipal Market Risk—factors unique to the municipal bond market may negatively affect the value of municipal bonds. These factors include political or legislative changes and uncertainties related to the tax status of the securities and the rights of investors in the securities. The Fund may invest in a group of municipal obligations that are related in such a way that an economic, business, or political development affecting one would also affect the others.
Interest Rate Risk—fixed coupon payments (cash flows) of bonds and debt securities may become less competitive with the market in periods of rising interest rates and cause bond prices to decline. During periods of increasing interest rates, the Fund may experience high levels of volatility and shareholder redemptions and may have to sell securities at times when it would otherwise not do so, and at unfavorable prices, which could reduce the returns of the Fund.
Credit Risk—the issuer of bonds or other debt securities may be unable or unwilling, or may be perceived as unable or unwilling, to make timely interest or principal payments or otherwise honor its obligations. Changes in an issuer’s financial strength, credit rating or the market’s perception of an issuer’s creditworthiness may also affect the value of the Fund’s investment in that issuer.
High Yield Risk—below investment grade debt securities and unrated securities of similar credit quality (commonly known as “junk bonds” or “high yield securities”) may be subject to greater levels of interest rate, credit, liquidity, and market risk than higher-rated securities. These securities are considered predominately speculative with respect to the issuer’s continuing ability to make principal and interest payments.
New Fund Risk—the Fund is a new fund, which may result in additional risk. There can be no assurance that the Fund will grow to an economically viable size, in which case the Fund may cease operations. In such an event, investors may be required to liquidate or transfer their investments at an inopportune time. In addition, until the Fund achieves sufficient scale, a Fund shareholder may experience proportionally higher Fund expenses than would be experienced by shareholders of a fund with a larger asset base.
Management Risk—because the Fund is an actively managed investment portfolio, security selection or focus on securities in a particular style, market sector or group of companies may cause the Fund to incur losses or underperform relative to its benchmarks or other funds with a similar investment objective. There can be no guarantee that the Subadviser’s investment techniques and risk analysis will produce the desired result.
Market Risk—market prices of investments held by the Fund may fall rapidly or unpredictably due to a variety of factors, including economic, political, or market conditions, or other factors including terrorism, war, natural disasters, and the spread of infectious illness or other public health issues, including epidemics or pandemics, or in response to events that affect particular industries or companies.
Liquidity Risk—the Fund may not be able to dispose of particular investments, such as illiquid securities, readily at favorable times or prices or the Fund may have to sell them at a loss.