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Data as of Oct 28, 2026.

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IDAU vs IEFA: Differences, Returns & Fees

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IDAU and IEFA are measured over different days, and IEFA charges 0.07% to IDAU's 0.30%.

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Net assets on Oct 28, 2026: $1.2m for Corgi International Developed Equities 15% Structured Buffer ETF - August Series and $190.4bn for iShares Core MSCI EAFE ETF.

IDAU on its own →IEFA on its own →
At a glance
−3.9%
IDAU total return, since launch, Aug 4, 2026
+12.3%
IEFA total return, 1 year
0.30%
IDAU expense ratio
0.07%
IEFA expense ratio

Pair scorecard

IEFA costs 0.23 points a year less; IEFA is far larger, $190.4bn against $1.2m.

IDAU vs IEFA: Differences, Returns & Fees
MeasureIDAUIEFA
Return
Total return, 1 yearnot published+12.3%
Drawdown
Below its high4.7%, high on Aug 25, 2026
Benchmark
What it tracksEFAMSCI EAFE IMI Index
The outcome period
Buffer left, in index points12.7% of 15.0%
Days left in the period277
Period endsJul 31, 2027
Cost and size
Expense ratio0.30%0.07%
Net assets$1.2m$190.4bn
Holdings
Holdings in commonnot published
In the S&P 500, by weight0%
Holdings datedOct 27, 2026
Top ten holdings, share of the fund12.3%

Method

Side by side

IDAU Corgi International Developed Equities 15% Structured Buffer ETF - August Series IEFA iShares Core MSCI EAFE ETF
Where it sits Buffer ETF Stock ETF
Issuer Corgi iShares
What it is Defined outcome, 15% on EFA Tracks the MSCI EAFE
Total return, 1 year −3.9% (since launch, Aug 4, 2026) +12.3%
Its benchmark over the same days −3.4% (EFA) (since launch, Aug 4, 2026) +14.3% (ACWX)
Gap to its benchmark −0.5 pts vs EFA (since launch, Aug 4, 2026) −2.0 pts vs ACWX
Expense ratio 0.30% 0.07%
Holdings not read by ETFIQ 2629
Net assets $1.2m $190.4bn

IDAU and IEFA on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
IDAU

Protection left, in index points: 12.7% of the 15.0% buffer still sits below today's EFA level. 277 days remained on Oct 27, 2026. On Jul 31, 2027 the period ends and a new cap is set.

IEFA

IEFA tracks the MSCI EAFE. Over the year to Oct 28, 2026 it returned +12.3% with distributions reinvested, against +14.3% for its benchmark, the MSCI ACWI ex USA Index. The prospectus expense ratio is 0.07% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 2,629 positions, with the top ten at 12.3%. It sat 4.7% below its high of Aug 25, 2026 on Oct 28, 2026.

Questions people ask

Are IDAU and IEFA in the same category?
IDAU is a buffer ETF and IEFA is a stock ETF, so they do different jobs. The table compares what both publish: return, cost and holdings.
Which is cheaper, IDAU or IEFA?
IEFA is cheaper, by 0.23 percentage points a year. That is about $23 on $10,000 held for a year. Fees come from each fund's prospectus.
Other comparisons
IDAU vs VEAEFA vs IDAUIDMY vs IEFAIDJL vs IEFAIDJN vs IEFAIEFA vs OCTIIEFA vs JULIARLI vs IEFA
Where to next
iShares® MSCI EAFE ETF →IDAU on its own →IEFA on its own →Hold both: look the portfolio through →Rankings →IEFA dividend history →IEFA holdings →Standards and sources →
Sources and dates
IDAU filings on SEC EDGAR ↗
Corgi website ↗
IEFA filings on SEC EDGAR ↗
IEFA prospectus with the expense ratio (SEC) ↗
iShares page for IEFA ↗

Links are sources, not endorsements. A comparison is not a recommendation.

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ETFIQ, IDAU against IEFA, data as of Oct 28, 2026. https://etfiq.com/compare/any/idau-vs-iefa

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