Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
JAAA vs MGK: how they differ
JAAA and MGK hold 0% of their weight in the same names, and MGK returned more over the year.
Janus Henderson AAA CLO ETF and Vanguard Mega Cap Growth Index Fund.
What they hold in common
By the books each fund has filed, JAAA and MGK hold 0% of their money in the same securities at the same weight.
| Only in JAAA | Only in MGK |
|---|---|
| KKR CLO 35 Ltd. 0.96% | NVIDIA Corp 13.29% |
| AB BSL CLO 1 Ltd. 0.88% | Apple Inc 12.19% |
| Anchorage Capital CLO 16 Ltd. 0.82% | Microsoft Corp 7.52% |
| Anchorage Capital CLO 17 Ltd. 0.80% | Alphabet Inc 5.93% |
| Carlyle US CLO Ltd. 0.70% | Alphabet Inc 4.67% |
| Carlyle US CLO Ltd. 0.67% | Amazon.com Inc 4.47% |
| Regatta XIX Funding Ltd. 0.67% | Broadcom Inc 4.28% |
| Magnetite XXXII Ltd. 0.67% | 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 Apr 30, 2026 and Jun 30, 2026.
| JAAA Janus Henderson AAA CLO ETF | MGK Vanguard Mega Cap Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | Janus | Vanguard |
| What it is | Henderson AAA CLO | Mega Cap Growth |
| Total return, 1 year | +4.9% | +14.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −12.6 pts | −2.6 pts |
| Expense ratio | 0.20% | 0.07% |
| Already in the S&P 500 | 0.0% | 99.2% |
| Holdings | 600 | 56 |
JAAA in plain words
JAAA is an index equity fund tracking the Henderson AAA CLO. Over the year to Sep 11, 2026 it returned +4.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.20% a year. By its holdings filed for Apr 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 600 positions, with the top ten at 7.5%.
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, JAAA or MGK?
- In the year to Sep 12, 2026, with distributions reinvested, JAAA returned +4.9% and MGK returned +14.9%, so MGK returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, JAAA or MGK?
- JAAA charges 0.20% a year and MGK charges 0.07%, so MGK is cheaper. Fees come from each fund's prospectus.
- How much do JAAA and MGK overlap with the S&P 500?
- By their latest filed holdings, 0% of JAAA 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, JAAA against MGK, data as of Sep 12, 2026. https://etfiq.com/compare/any/JAAA-MGK Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources