CGUS vs MGK overlap - what they share and where they differ
CGUS and MGK share 46.6% of their weight across 22 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
CGUS and MGK
46.6%
22 shared positions
CGUS
Capital Group Core Equity ETF
Reported positions cover 100% of the fund, 65 positions · May 31, 2026
Top 10: 45.1%·Holdings of CGUS
MGK
VANGUARD MEGA CAP GROWTH INDEX FUND
Reported positions cover 100% of the fund, 55 positions · Jun 30, 2026
Top 10: 66.9%·Holdings of MGK
Reported positions cover CGUS 100%, MGK 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
MGK vs CGUS side by side
CGUSCapital Group Core Equity ETF
65
stock positions reported to the SEC
44.7% of its weight is in 43 names MGK does not hold
MGKVANGUARD MEGA CAP GROWTH INDEX FUND
55
stock positions reported to the SEC
26.7% of its weight is in 33 names CGUS does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: MGK has 25.0 points more of it.
The figures side by side
| CGUS | MGK | |
|---|---|---|
| Filing date | May 31, 2026 | Jun 30, 2026 |
| Stock positions reported | 65 | 55 |
| Weight of the ten largest | 45.1% | 66.9% |
| Largest position | NVDA 6.9% | NVDA 13.3% |
| Held alone | 43 positions, 44.7% | 33 positions, 26.7% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In CGUS | In MGK | Counted |
|---|---|---|---|
| NVDANVIDIA Corp | 6.85% | 13.27% | 6.85% |
| MSFTMicrosoft Corp | 5.75% | 7.50% | 5.75% |
| GOOGLAlphabet Inc | 5.15% | 10.58% | 5.15% |
| AMZNAmazon.com Inc | 5.04% | 4.46% | 4.46% |
| AVGOBroadcom Inc | 6.33% | 4.27% | 4.27% |
| METAMeta Platforms Inc | 3.79% | 4.08% | 3.79% |
| LLYEli Lilly & Co | 3.92% | 3.40% | 3.40% |
| AAPLApple Inc | 2.76% | 12.17% | 2.76% |
| MAMastercard Inc | 1.82% | 1.47% | 1.47% |
| AMATApplied Materials Inc | 2.57% | 1.13% | 1.13% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in CGUS
Only in MGK
Questions people ask
Is CGUS the same as MGK?
46.6% of their weight sits in the same 22 holdings. CGUS also reports CAPITAL GROUP CENTRAL CASH FUND, TSM, CSCO, which the other does not. MGK also reports TSLA, AMD, LRCX, which the other does not.
How is the overlap between CGUS and MGK measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 100% of CGUS and 100% of MGK, so the number cannot exceed the smaller coverage.
Which holds more, MGK or CGUS?
CGUS reports 65 stock positions and MGK reports 55. 44.7% of CGUS's weight sits in names MGK does not hold, and 26.7% of MGK's weight in names CGUS does not hold. The ten largest positions are 45.1% of CGUS and 66.9% of MGK.
How do CGUS and MGK differ by sector?
The widest gap is Technology: MGK has 25.0 points more of it. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
Other pairs with these funds
MGK against other funds in the table
Add a third fund in the tool·All fund pairs
Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.