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Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

IGSB vs MGK: how they differ

IGSB and MGK hold 0% of their weight in the same names, and MGK returned more over the year.

iShares 1-5 Year Investment Grade Corporate Bond ETF and Vanguard Mega Cap Growth Index Fund.

What they hold in common

By the books each fund has filed, IGSB and MGK hold 0% of their money in the same securities at the same weight.

Largest positions each one holds and the other does not
Only in IGSBOnly in MGK
EAGLE FUNDING LUXCO SARL 0.31%NVIDIA Corp 13.29%
T-MOBILE USA INC 0.18%Apple Inc 12.19%
BANK OF AMERICA CORP 0.16%Microsoft Corp 7.52%
ABBVIE INC 0.14%Alphabet Inc 5.93%
AMAZON.COM INC 0.13%Alphabet Inc 4.67%
CVS HEALTH CORP 0.13%Amazon.com Inc 4.47%
BOEING CO 0.12%Broadcom Inc 4.28%
MARS INC 0.12%Meta Platforms Inc 4.08%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and May 31, 2026.

IGSB and MGK on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
IGSB
iShares 1-5 Year Investment Grade Corporate Bond ETF
MGK
Vanguard Mega Cap Growth Index Fund
Where it sitsCore index fundCore index fund
IssueriSharesVanguard
What it is1-5 Year Investment Grade Corporate BondMega Cap Growth
Total return, 1 year+1.7%+14.9%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−15.8 pts−2.6 pts
Expense ratio0.04%0.07%
Holdings460656

IGSB in plain words

IGSB is a bond fund tracking the 1-5 Year Investment Grade Corporate Bond. Over the year to Sep 11, 2026 it returned +1.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.04% a year.

MGK in plain words

MGK is an index equity fund tracking the Mega Cap Growth. Over the year to Sep 11, 2026 it returned +14.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.07% a year. By its holdings filed for Jun 30, 2026, 99% of the fund by weight is stocks the S&P 500 also holds, across 56 positions, with the top ten at 63.8%.

Questions people ask

Which returned more over the last year, IGSB or MGK?
In the year to Sep 12, 2026, with distributions reinvested, IGSB returned +1.7% and MGK returned +14.9%, so MGK returned more. One year is one year; the longer windows are in the table.
Which is cheaper, IGSB or MGK?
IGSB charges 0.04% a year and MGK charges 0.07%, so IGSB is cheaper. Fees come from each fund's prospectus.

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Where these figures came from

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

IGSB against MGK, ETFIQ, data as of Sep 12, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, IGSB against MGK, data as of Sep 12, 2026. https://etfiq.com/compare/any/IGSB-MGK Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources