Compare · 3 funds side by side · dividends reinvested

MFSB, IUSB and MUB

Story of the three · Growth5Y$10,000 five years agoDividends reinvested · all three on one scale$10,381MUB · best of the three

02 / 04

MFSB, IUSB and MUB, Ranked

Today

FundFeeYieldYTD1 year3 yrs · yr5 yrs · yrWorst dropVolatilityAssetsAvg rank

iShares National Muni Bond ETFBonds & Cash · Municipal0.05%3.28%+0.3%+0.7%+3.8%+0.8%−6.3%3.8%$55.1B1.6

MFS Active Exchange Traded Funds Trust - MFS Active Core Plus Bond ETFBonds & Cash · Core aggregate0.34%4.75%−0.4%+0.1%[…][…]−4.1%4.0%$862M2.0

iShares Core Universal USD Bond ETFBonds & Cash · Core aggregate0.06%4.36%−0.5%−0.2%+5.0%+0.1%−4.3%3.9%$50.5B2.1

Rank among the three1st → 3rdFee, drop and volatility: lower ranks higherAvg rank: mean of the 8 ranks · 1 is best

End-of-day Nov 10, 2026 · returns include dividends · since: MFSB 2024 · IUSB 2014 · MUB 2007

Head to Head

Swap sides Versus in desk

Head to Head

iShares Core Universal USD Bond ETF · $50.5B$10,070

IUSB

MUB

iShares National Muni Bond ETF · $55.1B$10,381

$10,000 five years ago, dividends reinvested

IUSBMeasureMUB

−0.5%Year to dateJan 1 → Nov 10+0.3%

−0.2%1 yearTotal return+0.7%

+5.0%3 years · per year$10,000 became $11,560 · $11,169+3.8%

+0.1%5 years · per year$10,000 became $10,070 · $10,381+0.8%

0.06%Expense ratio$6 · $5 a year on $10k · lower is better0.05%

4.36%Trailing 12-mo yield$436 · $328 a year on $10k3.28%

−4.3%Worst dropSmaller is better−6.3%

3.9%VolatilityLower is calmer3.8%

IUSBMUB Winner of the row, in its colourEach row: the bigger of the two fills its side

3–5MUB wins

End-of-day Nov 10, 2026 · returns include dividends · 3Y and 5Y figures are per-year returns

More Ways to See the Pairs

IUSB vs MUB: Top 5 Holdings

Today

IUSB

[…]in top 5

MUB

in top 5[…]

Holdings […] not in today’s data

Held in common[…]

End-of-day Nov 10, 2026 · share of each fund

IUSB vs MUB Returns, Every Period

iSharesIUSB

+0.1%

5 years, per year

MUBiShares

+0.8%

5 years, per year

IUSBMUBFaded: behind in that period

1–3MUB wins

End-of-day Nov 10, 2026 · dividends in · faded = behind in that period

IUSB vs MFSB

YTD

iSharesIUSB

−0.5%

MFSBMFS

−0.4%

−0.5%Year to date−0.4%

−4.3%Worst drop · 1Y−4.1%

3.9%Volatility · 1Y4.0%

4.4%Yield4.8%

$50.5BAssets$862M

3–1MFSB wins

End-of-day Nov 10, 2026 · smaller drop and lower volatility win

Cost, Income and Risk

Fees: MFSB, IUSB, MUB

Today

0.05%lowest, MUB

FundExpense ratioFee$10k

MUB0.05%$5

IUSB0.06%$6

MFSB0.34%$34

End-of-day Nov 10, 2026 · fee on $10,000 a year

Yields: MFSB, IUSB, MUB

4.75%highest, MFSB

FundTrailing yieldYield$10k

MFSB4.75%$475

IUSB4.36%$436

MUB3.28%$328

End-of-day Nov 10, 2026 · trailing 12-month yield

Income After Fees on $10,000

$441most kept, MFSB

MFSB$475 − $34 = $441

IUSB$436 − $6 = $430

MUB$328 − $5 = $323

KeptFee

End-of-day Nov 10, 2026 · yield in dollars minus the fee

Overlap: MFSB, IUSB, MUB

Today

[…]holdings […]

MFSBIUSBMUB

MFSB—[…][…]

IUSB[…]—[…]

MUB[…][…]—

End-of-day Nov 10, 2026 · share held in common · outlined: the pair in versus

Return vs Bumpiness: 3 ETFs

+0.7%MUB, at 3.8% volatility

MUBWorst drop−6.3%3.8% vol

IUSBWorst drop−4.3%3.9% vol

MFSBWorst drop−4.1%4.0% vol

End-of-day Nov 10, 2026 · up and left is better

Paid More vs Made More

YTD

MFSBMUB

−0.4%Year to date+0.3%

4.8%Yield3.3%

+0.1%Past year+0.7%

0.34%Fee0.05%

3–1MUB wins

End-of-day Nov 10, 2026

Popular Pairs Near These Three

SCHD vs VIG

YTD

SchwabSCHD

+33.8%

VIGVanguard

+15.1%

+33.8%Year to date+15.1%

2.9%Yield1.5%

$122BAssets$109B

2–0SCHD wins

End-of-day Nov 10, 2026

JEPQ vs JEPI

YTD

J.P. MorganJEPQ

+6.0%

JEPIJ.P. Morgan

+7.6%

+6.0%Year to date+7.6%

12.4%Yield7.9%

$40.7BAssets$45.2B

1–1level

End-of-day Nov 10, 2026

SPYM vs SPY

YTD

SPDRSPYM

+10.9%

SPYSPDR

+10.8%

+10.9%Year to date+10.8%

1.0%Yield1.0%

$179BAssets$778B

1–0SPYM wins

End-of-day Nov 10, 2026