Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
ACWI vs MGK: how they differ
ACWI and MGK hold 0% of their weight in the same names, and ACWI returned more over the year.
iShares MSCI ACWI ETF and Vanguard Mega Cap Growth Index Fund.
What they hold in common
By the books each fund has filed, ACWI and MGK hold 0% of their money in the same securities at the same weight.
| Only in ACWI | Only in MGK |
|---|---|
| NVIDIA 4.89% | NVIDIA Corp 13.29% |
| APPLE 4.67% | Apple Inc 12.19% |
| MICROSOFT 3.38% | Microsoft Corp 7.52% |
| AMAZON.COM INC 2.38% | Alphabet Inc 5.93% |
| ALPHABET CLASS A 1.90% | Alphabet Inc 4.67% |
| TAIWAN SEMICONDUCTOR MANUFACTURING 1.86% | Amazon.com Inc 4.47% |
| BROADCOM INC 1.59% | Broadcom Inc 4.28% |
| ALPHABET CLASS C 1.50% | 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 Sep 10, 2026.
| ACWI iShares MSCI ACWI ETF | MGK Vanguard Mega Cap Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | MSCI ACWI | Mega Cap Growth |
| Total return, 1 year | +19.1% | +14.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +1.6 pts | −2.6 pts |
| Expense ratio | 0.32% | 0.07% |
| Already in the S&P 500 | 61.4% | 99.2% |
| Holdings | 1630 | 56 |
ACWI in plain words
ACWI is an index equity fund tracking the MSCI ACWI. Over the year to Sep 11, 2026 it returned +19.1% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.32% a year. By its holdings filed for Sep 10, 2026, 61% of the fund by weight is stocks the S&P 500 also holds, across 1630 positions, with the top ten at 24.6%.
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, ACWI or MGK?
- In the year to Sep 13, 2026, with distributions reinvested, ACWI returned +19.1% and MGK returned +14.9%, so ACWI returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, ACWI or MGK?
- ACWI charges 0.32% a year and MGK charges 0.07%, so MGK is cheaper. Fees come from each fund's prospectus.
- How much do ACWI and MGK overlap with the S&P 500?
- By their latest filed holdings, 61% of ACWI and 99% of MGK by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.
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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.
Cite this page. ETFIQ, ACWI against MGK, data as of Sep 13, 2026. https://etfiq.com/compare/any/acwi-vs-mgk Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources