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MUNX

GradeCNew York Stock Exchange Arca

AMG GW&K Muni Income ETF

Municipal Bond · AMG ETFs · Inception 2025-10-29

$23.63−0.32 (−1.33%)

As of Sep 23, 2026, 2:08 PM EDT

History starts Oct 30, 2025.History starts Oct 30, 2025.
Intraday session: down, 6 prints from 23.95 to 23.63. Range 23.63 to 23.95. Use the arrow keys to read each point.$23.70$23.80$23.9010 AM12 PM2 PM4 PM
Expense ratio
0.29%
Fund size
$19M
1Y return
Yield · Last 12 months
Data unavailable
Holdings
73
Volume · 30D
0M sh
NAV per share
$23.92
52W range
low $23.93high $25.45

The ETF.net MUNX Grade

C

54/ 100

Rank 32 of 63 in Other Municipal Bond

Confidence High

Six-pillar profile for MUNX. Scores out of 100: Cost 60, Risk 48, Mission 94, Tradability 9, Holdings 36, Durability 23. Strongest: Mission (94). Weakest: Tradability (9). Leans toward Mission.
F< 25
D≥ 25
C≥ 40
B≥ 55
A≥ 70

Score 54 of 100 sits in the C band. Bands: A ≥ 70, B ≥ 55, C ≥ 40, D ≥ 25, F < 25; the scale skips E.

  • Cost

    What you pay to own it — the expense ratio plus trading frictions, ranked within its category.
    BScore 60
    Category rank26/63 · top 41%
  • Mission

    How faithfully it does the job it claims — tracking its mandate or index with minimal slippage.
    AScore 94
    Category rank13/57 · top 23%
  • Risk

    How violently it can move — volatility, drawdown depth, and downside capture versus its category.
    CScore 48
    Category rank39/62 · mid-pack
  • Tradability

    How cheaply and easily you can get in and out — liquidity, spread, and premium/discount stability.
    FScore 9
    Category rank60/63 · bottom quartile
  • Holdings

    What it actually owns — the quality, breadth, and concentration of the underlying portfolio.
    DScore 36
    Category rank54/63 · bottom quartile
  • Durability

    Whether it will still be here — the fund’s assets, age, flows, and issuer staying power.
    FScore 23
    Category rank55/63 · bottom quartile

Graded as of Sep 22, 2026

Our read on MUNX

ETF.net Research

CA Boston bond boutique's muni playbook in an ETF wrapper. GW&K's team picks individual tax-exempt bonds across sectors, maturities and credit tiers, aiming at federally tax-free income instead of mirroring an index.

Stated mandate

The Fund seeks current income exempt from federal income tax while preserving capital. Capital appreciation is a secondary objective.

Why people hold it

  1. 01Actively run rather than index-shadowing: managers can shift sectors, maturities and credit quality inside a muni market where many bonds trade by appointment.amgetfs.com
  2. 02At 0.29% a year, it charges a shade under the typical muni bond ETF while running an active book instead of a rules-based one.
  3. 03Clear job description: core intermediate US munis, federally tax-exempt income first, capital preservation alongside it, price appreciation only a secondary goal.amgetfs.com
  4. 04Income is designed to arrive monthly per the fund's filings, and the portfolio stays tightly inside that tax-exempt muni mandate with no side bets.

Worth knowing

  1. 01Index munis undercut it sharply: VTEB and SCMB charge 0.03%. Active bond selection is the entire reason to pay the difference here.
  2. 02Launched in late 2025, so the record is short and trading has been light. Spreads can run wider than the big muni index funds, which makes execution matter.
  3. 03Payout timing has been uneven early on, and the exemption is federal only: state taxes and bonds subject to the AMT are still in play.aaii.com

MUNX Holdings

As of Sep 20, 2026, 9:32 AM
Asset class
Bonds
Holdings
73
Top-10 weight
23%
Largest holding
COMMONWEALTH FINANCING AUTHORITY 4.00% 2039-06-013.0%
The fund’s holdings, weight-ordered — page 1 of 5.
#TickerCompanyWeight %SharesMarket valueIn ETFs
001COMMONWEALTH FINANCING AUTHORITY 4.00% 2039-06-013.03%0$579K1
002PENNSYLVANIA ECONOMIC DEVELOPMENT FINANCING AUTHORITY 5.25% 2035-06-302.59%0$496K1
003AQUARION WATER AUTHORITY 5.00% 2034-08-012.23%0$427K1
004PHILADELPHIA GAS WORKS CO 5.00% 2032-10-012.22%0$425K1
005US Dollar2.20%0$421K394
006PENNSYLVANIA ECONOMIC DEVELOPMENT FINANCING AUTHORITY 5.00% 2033-06-302.20%0$421K1
007CITY OF HOUSTON TX HOTEL OCCUPANCY TAX & SPECIAL REVENUE 5.00% 2038-09-012.19%0$418K1
008NEW YORK TRANSPORTATION DEVELOPMENT CORP 6.00% 2055-06-302.14%0$410K1
009NORTH DAKOTA HOUSING FINANCE AGENCY 4.70% 2045-07-012.06%0$393K1
010JEA ELECTRIC SYSTEM REVENUE 4.00% 2037-10-012.02%0$386K1
011MASSACHUSETTS DEVELOPMENT FINANCE AGENCY 5.50% 2044-10-012.01%0$384K1
012TEXAS PRIVATE ACTIVITY BOND SURFACE TRANSPORTATION CORP 5.00% 2058-06-301.94%0$372K1
013PUBLIC FINANCE AUTHORITY 5.00% 2041-06-011.92%0$366K1
014NEW YORK TRANSPORTATION DEVELOPMENT CORP 4.00% 2034-10-311.89%0$362K1
015NEW YORK TRANSPORTATION DEVELOPMENT CORP 5.00% 2040-10-011.84%0$353K1

Showing 1–15 of 75 holdings

MUNX Performance

Shows how $10,000 changes over the selected period, with cash distributions reinvested at the closing price on each ex-dividend date.

MUNX$9,826
SPY tracks large US stocks. It provides market context, rather than representing this fund’s strategy, asset class or investment benchmark.$11,430
Dec 31, 2025 to Sep 22, 2026. MUNX $9,826. SPY $11,430. Use the arrow keys to read each point.$9,119$10,381$11,642Dec 2025May 2026Sep 2026

Dec 31, 2025 – Sep 22, 2026

Returns run to the Sep 22, 2026 close, with cash distributions reinvested. Each period starts on the same date that many months or years earlier. Periods over one year show the average yearly return.

Trailing total return for MUNX. Periods over one year show the average yearly return.
PeriodMUNX
Year to date−1.7%
1 month−2.5%
3 months−3.8%
1 yearFund is under 1 year old
3 yearsFund is under 3 years oldper year
5 yearsFund is under 5 years oldper year
10 yearsFund is under 10 years oldper year

As of the close, with distributions reinvested.

Calendar-year total return with cash distributions hypothetically reinvested at the ex-dividend date’s closing price. The current year shows year to date.

Annual total returns for MUNX
YearReturn barMUNX
2026 YTD−1.7%
2025+0.5%

History from Oct 30, 2025

MUNX in the news

ETF.net Research hasn’t filed on MUNX yet — coverage lands here as it’s written.

MUNX Dividends

Adds up every distribution paid per share over the last 12 months, divided by the last completed close. Distributions are counted by ex-date. Data through Sep 22, 2026.
Data unavailableLast 12 months
Payout per share
Data unavailableLast 12 months
Last payment
$0.08 per share
Paid on
Shares bought on or after this date do not qualify for this distribution.
Frequency
Monthly

Distribution data unavailable.

Distribution history

2025–2026

One bar per payment. 10 payments from 2025 to 2026 YTD. Dec 1, 2025 $0.06; Dec 16, 2025 $0.08; Feb 2, 2026 $0.06; Mar 2, 2026 $0.07; Apr 1, 2026 $0.07; May 1, 2026 $0.07; Jun 1, 2026 $0.08; Jul 1, 2026 $0.07; Aug 3, 2026 $0.08; Sep 1, 2026 $0.08. Use the arrow keys to read each point.20252026YTD
Ex-datePay dateAmount per share
Sep 1, 2026Sep 4, 2026$0.08
Aug 3, 2026Aug 6, 2026$0.08
Jul 1, 2026Jul 7, 2026$0.07
Jun 1, 2026Jun 4, 2026$0.08
May 1, 2026May 6, 2026$0.07
Apr 1, 2026Apr 7, 2026$0.07
Mar 2, 2026Mar 5, 2026$0.07
Feb 2, 2026Feb 5, 2026$0.06
Dec 16, 2025Dec 19, 2025$0.08
Dec 1, 2025Dec 4, 2025$0.06

MUNX Risk

How much the fund’s monthly returns vary, scaled to a year.
Launched Oct 2025; fills in after 12 months
How it’s calculated: standard deviation

The sample standard deviation of monthly total returns, multiplied by the square root of 12.

Uses up to 36 complete months, with at least 12 required. Total returns include reinvested distributions.

Return above 3-month US Treasury bills per unit of volatility.
Launched Oct 2025; fills in after 12 months
How it’s calculated: Sharpe ratio

Subtract each month’s Treasury-bill return from the fund’s monthly total return.

Divide the average of those excess returns by their sample standard deviation, then multiply by the square root of 12.

Uses up to 36 complete months, with at least 12 required. Each month uses the Treasury yield quoted at the end of the previous month.

The largest fall from a peak to the low that followed.
Launched Oct 2025; fills in after 12 months
How it’s calculated: maximum drawdown

The largest percentage decline from an earlier peak, using total returns with reinvested distributions.

Uses up to five years through the last close, with at least 12 months required.

How strongly the fund’s returns move with its asset-class index.
0.18
vs its asset-class index
How it’s calculated: beta

The beta figure is supplied by FMP. The comparison index depends on the fund’s broad asset class.

MUNX Cost

Expense ratio0.29%
  • The middle half of Other Municipal Bond funds
  • Median 0.30%

27 of the 62 Other Municipal Bond funds charge less.

MUNX costs $29.00 a year on $10,000. The median Other Municipal Bond fund costs $30.00.