Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
ACWI vs MGK: how they differ
ACWI and MGK hold 31% 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 31% of their money in the same securities at the same weight.
| Holding | ACWI | MGK |
|---|---|---|
| NVIDIA CORPORATION | 4.89% | 13.29% |
| APPLE INC. | 4.02% | 12.19% |
| MICROSOFT CORPORATION | 2.90% | 7.52% |
| AMAZON.COM, INC. | 2.58% | 4.47% |
| ALPHABET INC. | 2.26% | 5.93% |
| BROADCOM INC. | 1.90% | 4.28% |
| ALPHABET INC. | 1.87% | 4.67% |
| META PLATFORMS, INC. | 1.34% | 4.08% |
| TESLA, INC. | 1.09% | 3.93% |
| ELI LILLY AND COMPANY | 0.76% | 3.41% |
| ADVANCED MICRO DEVICES, INC. | 0.58% | 3.20% |
| VISA INC. | 0.56% | 1.82% |
| Only in ACWI | Only in MGK |
|---|---|
| Taiwan Semiconductor Manufacturing Compa 1.73% | Sandisk Corp 1.28% |
| JPMORGAN CHASE & CO. 0.86% | Space Exploration Technologies Corp 0.48% |
| BERKSHIRE HATHAWAY INC. 0.66% | |
| EXXON MOBIL CORPORATION 0.66% | |
| MICRON TECHNOLOGY, INC. 0.59% | |
| WALMART INC. 0.58% | |
| ASML Holding N.V. 0.56% | |
| JOHNSON & JOHNSON 0.56% |
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 Apr 30, 2026 and Jun 30, 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 | 2307 | 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 Apr 30, 2026, 61% of the fund by weight is stocks the S&P 500 also holds, across 2307 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 12, 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, 31% of their books are the same securities at the same weight.
Other comparisons
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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 12, 2026. https://etfiq.com/compare/any/ACWI-MGK Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources