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IDMO vs MFSI: Differences, Returns & Fees

IDMO and MFSI hold 14% of their weight in the same names, and IDMO returned +16.9% over the year. Net assets: $4.3bn on Oct 9, 2026 for Invesco S&P International Developed Momentum ETF, and $1.1bn on May 31, 2026 for MFS Active International ETF.

IDMO costs 0.34 points a year less; their one-year returns differ by 5.6 points.

IDMOMFSI
Expense ratio0.25%0.59%
Net assets, IDMO as of Oct 9, 2026 and MFSI as of May 31, 2026$4.3bn$1.1bn
Total return, 1 year+16.9%+11.3%
What it tracksnot read by ETFIQNo index, actively managed
Holdings in common14%
Holdings datedOct 10, 2026May 31, 2026
Top ten holdings, share of the fund36.3%27.9%
Below its high4.8%, high on Aug 17, 20263.4%, high on Aug 10, 2026

Holdings in common uses holdings dated May 31, 2026 and Oct 9, 2026.

+16.9%
IDMO total return, 1 year
+11.3%
MFSI total return, 1 year
0.25%
IDMO expense ratio
0.59%
MFSI expense ratio

What they hold in common

By the books each fund has filed, IDMO and MFSI hold 14% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated May 31, 2026 and Oct 9, 2026.

half

14% in common

Positions both hold, largest shared weight first
Holding IDMO MFSI
Novartis AG 2.50% 1.80%
Toronto-Dominion Bank/The 3.46% 1.74%
TotalEnergies SE 1.97% 1.69%
Sumitomo Mitsui Financial Group Inc 1.76% 1.26%
DBS Group Holdings Ltd 2.00% 1.01%
ING Groep NV 0.97% 1.70%
Rio Tinto PLC 1.09% 0.83%
Royal Bank of Canada 5.09% 0.66%
Eni SpA 0.59% 1.60%
Mitsubishi Electric Corp 0.57% 2.10%
Canadian National Railway Co 0.56% 0.57%
Banco Bilbao Vizcaya Argentaria SA 1.53% 0.53%
Only in IDMO
ASML Holding NV 9.38%
HSBC Holdings PLC 4.15%
Mitsubishi UFJ Financial Group Inc 2.79%
Kioxia Holdings Corp 2.46%
Advantest Corp 2.37%
BHP Group Ltd 2.13%
Banco Santander SA 1.97%
Bank of Nova Scotia/The 1.82%
Only in MFSI
Taiwan Semiconductor Manufacturing Co Ltd 7.86%
Samsung Electronics Co Ltd 4.02%
Tencent Holdings Ltd 2.26%
Air Liquide SA 2.10%
Schneider Electric SE 1.99%
Hitachi Ltd 1.99%
Cie Financiere Richemont SA 1.90%
Roche Holding AG 1.87%

Check overlap with more funds →

On the same fields

IDMO
Invesco S&P International Developed Momentum ETF
MFSI
MFS Active International ETF
Where it sits Stock ETF Stock ETF
Issuer Invesco MFS
What it is Tracks an index Actively managed
Total return, 1 year +16.9% +11.3%
S&P 500 over the same days +17.3% +17.3%
Gap to the S&P 500 −0.3 pts −6.0 pts
Expense ratio 0.25% 0.59%
Already in the S&P 500 0.0% 0.0%
Holdings 167 93
Net assets, IDMO as of Oct 9, 2026 and MFSI as of May 31, 2026 $4.3bn $1.1bn

IDMO and MFSI on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

IDMO in plain words

IDMO tracks an index. Over the year to Oct 9, 2026 it returned +16.9% with distributions reinvested, against +17.3% for the S&P 500. The prospectus expense ratio is 0.25% a year. By its holdings published by its issuer for Oct 10, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 167 positions, with the top ten at 36.3%. It sat 4.8% below its high of Aug 17, 2026 on Oct 9, 2026.

MFSI in plain words

MFSI is actively managed and tracks no index. Over the year to Oct 9, 2026 it returned +11.3% with distributions reinvested, against +17.3% for the S&P 500. The prospectus expense ratio is 0.59% a year. By its holdings filed for May 31, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 93 positions, with the top ten at 27.9%. It sat 3.4% below its high of Aug 10, 2026 on Oct 9, 2026.

Questions people ask

Which returned more over the last year, IDMO or MFSI?
In the year to Oct 9, 2026, with distributions reinvested, IDMO returned +16.9% and MFSI +11.3%.
Which is cheaper, IDMO or MFSI?
IDMO is cheaper, by 0.34 percentage points a year. That is about $34 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IDMO and MFSI overlap with the S&P 500?
By their latest filed holdings, 0% of IDMO and 0% of MFSI by weight is stocks the S&P 500 already holds.
Other comparisons
DBEF vs IDMOIDMO vs IQLTIDMO vs IXUSIDMO vs IEFADBEF vs MFSIMFSI vs VXUSIEFA vs MFSIDIHP vs MFSI
IDMO on its own →MFSI on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
IDMO filings on SEC EDGAR ↗IDMO prospectus with the expense ratio (SEC) ↗Invesco page for IDMO ↗MFSI filings on SEC EDGAR ↗MFSI prospectus with the expense ratio (SEC) ↗MFS website ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, IDMO against MFSI, data as of Oct 9, 2026. https://etfiq.com/compare/any/idmo-vs-mfsi

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.