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AMUN vs VSDM

abrdn Ultra Short Municipal Income Active ETF

AMUNBNasdaq

Vanguard Short Duration Tax-Exempt Bond ETF

VSDMACboe

Overlap

No data

Expense ratio

VSDM −0.13pt a year

AMUN0.25%VSDM0.12%

Avg volume · 30D

VSDM 49.9×the volume

AMUN5.18KVSDM258K

AMUN vs VSDM Performance

Oct 31, 2025 – Oct 30, 2026

+2.7%AMUN+2.0%VSDM

Oct 31, 2025 to Oct 30, 2026. AMUN +2.7%. VSDM +2.0%. Use the arrow keys to read each point.−0.5%0%0.5%1%1.5%Oct 2025Apr 2026Oct 2026
Expense ratio
AMUN 0.25%
VSDM 0.12%, better
Fund size
AMUN $61M
VSDM $1.2B
1Y total return
AMUN +2.7%, better
VSDM +2.0%
Yield (12M)
AMUN No data
VSDM 3.12%
Holdings
AMUN 73
VSDM 3315
Avg volume (30D)
AMUN 5.18K sh
VSDM 258K sh, better
NAV per share
AMUN $26.04
VSDM $75.79
52W range

ETF.net Grade

AMUN: Cost 39, Risk 62, Mission 100, Tradability 29, Holdings 30, Durability 54. VSDM: Cost 85, Risk 48, Mission 100, Tradability 78, Holdings 75, Durability 62.
Pillar letters and Scores for AMUN, VSDM, with each pillar’s weight
PillarAMUNVSDM
Cost30% weightD39A85Higher
Mission25% weightA100A100
Risk15% weightB62HigherC48
Tradability15% weightD29A78Higher
Holdings10% weightD30A75Higher
Durability5% weightC54B62Higher

Rank among Short-Duration Municipal Bonds funds

How we build Categories ›
Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

Same Category. AMUN and VSDM are both graded against the same 27 Short-Duration Municipal Bonds funds, so their Grades compare head to head.

Short-Duration Municipal Bonds⁠

Category · 27 funds
See all 27 ›

VSDM ranks 2nd and AMUN 19th of 27 funds in the Short-Duration Municipal Bonds Category.

  1. Rank 1AVTESVanguard Short-Term Tax-Exempt Bond ETFScore 81
  2. Rank 2ASUBiShares Short-Term National Muni Bond ETFScore 80
  3. Rank 2AVSDMVanguard Short Duration Tax-Exempt Bond ETFScore 80
  4. Rank 4ATAXSNorthern Trust Short-Term Tax-Exempt Bond ETFScore 77
  5. Rank 18BSMMUPIMCO Short Term Municipal Bond Active Exchange-Traded FundScore 58
  6. Rank 19BAMUNabrdn Ultra Short Municipal Income Active ETFScore 56
  7. Rank 20BFUMBFirst Trust Ultra Short Duration Municipal ETFScore 54

Our read on each fund

ETF.net Research

AMUNBabrdn Ultra Short Municipal Income Active ETF

VSDMAVanguard Short Duration Tax-Exempt Bond ETF

In short

AMUN Ultra-short munis run by an active desk instead of an index, under a strategy whose track record dates to 1986. The aim: high after-tax income with capital preservation, paid out monthly.

VSDM No data

Stated mandate

AMUN The fund seeks high after-tax current income while preserving capital.

VSDM No data

Why people hold it

  • AMUN A human desk picks the bonds and sets duration here, rather than mirroring a muni index. The stated job: high after-tax current income while preserving capital.
  • 0.25% net of a waiver running through February 28, 2028, versus a 0.74% gross fee, and near what short-muni funds typically charge.
  • Income lands monthly, and the portfolio stays inside its lane: US municipal bonds at the ultra-short end of the curve.

VSDM No data

Worth knowing

  • AMUN Cheaper index options sit on the same shelf, like VTES at 0.05% and SUB at 0.07%. Active management is what the extra cost buys.
  • Thinly traded and small by category standards, so limit orders matter and spreads can be wider than at the big index funds.
  • Capital preservation is the goal, not a promise: muni credit and rate moves still move the price, and the waiver is scheduled to end.

VSDM No data

Full AMUN profile⁠

Full VSDM profile⁠

AMUN vs VSDM Holdings

How we measure overlap

Each holding counts at its smaller weight in the two funds, summed over the full Holdings. Sector, country and asset class use the same rule on each fund’s split. Cash, FX and derivative lines stay out of the counts. Two bond funds get no overlap figure.

AMUN vs VSDM Cost

Overpaying AMUN vs VSDM

$2,639

On $10,000 over 30 years. 7% growth a year before fees, expense ratio only.

  • AMUN 0.25%

    $5,159

  • VSDM 0.12%

    $2,520

$10,000
30 years

Cost over time

  • AMUN 0.25%
  • VSDM 0.12%
  • Overpaying
One line per fund, from year 0 to year 30. Use the arrow keys to read each point.$0$2K$4K$6K051015202530AMUN $5,159VSDM $2,520

Year by year

YearAMUNVSDMOverpaying
10$455$220$235
20$1,769$859$910
30$5,159$2,520$2,639

Expense ratio

  • 0.25%AMUN
  • 0.12%VSDM, cheaper
  • Middle half of Short-Duration Municipal Bonds funds
  • Median 0.21%

VSDM 5th cheapest of 27 funds

AMUN 15th cheapest of 27 funds

AMUN vs VSDM Dividends

Last 12 months to Oct 30, 2026
Yield (12M)
AMUN No data
VSDM 3.12%
Payout (12M)
AMUN No data
VSDM $2.37
Last payment
AMUN $0.07
VSDM $0.19
Ex-dividend
AMUN Oct 1, 2026
VSDM Oct 1, 2026
Paid on
AMUN Oct 2, 2026
VSDM Oct 5, 2026
Frequency
AMUN Monthly
VSDM Monthly

Distribution history

Per share, 2024 to 2026, same scale for both

AMUNMonthly · 12 paymentsAll AMUN payments⁠
One bar per payment. 12 payments from 2024 to 2026 YTD. Nov 3, 2025 $0.04; Dec 1, 2025 $0.07; Dec 24, 2025 $0.07; Feb 2, 2026 $0.06; Mar 2, 2026 $0.07; Apr 1, 2026 $0.07; May 1, 2026 $0.06; Jun 1, 2026 $0.06; Jul 1, 2026 $0.06; Aug 3, 2026 $0.06; Sep 1, 2026 $0.06; Oct 1, 2026 $0.07. Use the arrow keys to read each point.$0$0.252026YTD
VSDMMonthly · 22 paymentsAll VSDM payments⁠
One bar per payment. 22 payments from 2024 to 2026 YTD. Dec 24, 2024 $0.26; Feb 3, 2025 $0.20; Mar 3, 2025 $0.20; Apr 1, 2025 $0.16; May 1, 2025 $0.19; Jun 2, 2025 $0.20; Jul 1, 2025 $0.19; Aug 1, 2025 $0.19; Sep 2, 2025 $0.20; Oct 1, 2025 $0.20; Nov 3, 2025 $0.20; Dec 1, 2025 $0.20; Dec 18, 2025 $0.20; Feb 2, 2026 $0.19; Mar 2, 2026 $0.20; Apr 1, 2026 $0.20; May 1, 2026 $0.20; Jun 1, 2026 $0.20; Jul 1, 2026 $0.20; Aug 3, 2026 $0.20; Sep 1, 2026 $0.20; Oct 1, 2026 $0.19. Use the arrow keys to read each point.$0$0.252026YTD

AMUN vs VSDM Risk

Fall from peak · 5 years

This chart needs five years of history for both funds.

Risk facts

VolatilityStd dev, 3 years
AMUN 0.7%since Nov 2025VSDM 2.9%since Dec 2024
Return per unit of riskSharpe ratio, 3 years
AMUN −1.67since Nov 2025VSDM −0.26since Dec 2024
Worst fallMax drawdown, 5 years
AMUN −0.6%since Oct 2025VSDM −2.8%since Nov 2024
Market sensitivityBeta, 5 years
AMUN 0.82VSDM 0.09

Popular comparisons

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    abrdn Ultra Short Municipal Income Active ETF · Vanguard Short-Term Tax-Exempt Bond ETF

    Expense ratio
    0.25% · 0.05%
    Category
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  • VSDMAvsVTESA

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    Expense ratio
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    Category
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    Expense ratio
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    Category
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    Expense ratio
    0.12% · 0.07%
    Category
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    Expense ratio
    0.25% · 0.05%
    Category
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  • VSDMAvsTAXSA

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    Expense ratio
    0.12% · 0.05%
    Category
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