ARKK vs MGK overlap - what they share and where they differ
ARKK and MGK share 19.8% of their weight across 11 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.
ARKK and MGK
19.8%
11 shared positions
ARKK
ARK Innovation ETF
Reported positions cover 97% of the fund, 43 positions · Jul 31, 2026
Top 10: 47.6%·Holdings of ARKK
MGK
VANGUARD MEGA CAP GROWTH INDEX FUND
Reported positions cover 100% of the fund, 55 positions · Jun 30, 2026
Top 10: 66.8%·Holdings of MGK
Reported positions cover ARKK 97%, 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 ARKK side by side
ARKKARK Innovation ETF
43
stock positions reported to the SEC
63.6% of its weight is in 32 names MGK does not hold
MGKVANGUARD MEGA CAP GROWTH INDEX FUND
55
stock positions reported to the SEC
50.9% of its weight is in 44 names ARKK does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: MGK has 33.5 points more of it.
The figures side by side
| ARKK | MGK | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jun 30, 2026 |
| Stock positions reported | 43 | 55 |
| Weight of the ten largest | 47.6% | 66.8% |
| Largest position | TSLA 9.7% | NVDA 13.3% |
| Held alone | 32 positions, 63.6% | 44 positions, 50.9% |
| Covered by stock positions | 97% | 100% |
Holdings they share
| Stock | In ARKK | In MGK | Counted |
|---|---|---|---|
| TSLATESLA INC | 9.74% | 3.93% | 3.93% |
| AMDADVANCED MICRO DEVICES INC | 3.98% | 3.19% | 3.19% |
| AMZNAMAZON.COM INC | 2.95% | 4.46% | 2.95% |
| GOOGLALPHABET INC | 2.62% | 10.58% | 2.62% |
| NVDANVIDIA CORP | 1.94% | 13.27% | 1.94% |
| METAMETA PLATFORMS INC | 1.56% | 4.08% | 1.56% |
| AVGOBROADCOM INC | 1.24% | 4.27% | 1.24% |
| PLTRPALANTIR TECHNOLOGIES INC | 3.11% | 0.97% | 0.97% |
| LLYELI LILLY & COMPANY | 0.59% | 3.40% | 0.59% |
| SPCXSPACE EXPLORATION TECHNOLOGIES CORP | 4.87% | 0.48% | 0.48% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in ARKK
Only in MGK
Questions people ask
Is ARKK the same as MGK?
19.8% of their weight sits in the same 11 holdings. ARKK also reports TEM, CRSP, SHOP, which the other does not. MGK also reports AAPL, MSFT, LRCX, which the other does not.
How is the overlap between ARKK 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 97% of ARKK and 100% of MGK, so the number cannot exceed the smaller coverage.
Which holds more, MGK or ARKK?
ARKK reports 43 stock positions and MGK reports 55. 63.6% of ARKK's weight sits in names MGK does not hold, and 50.9% of MGK's weight in names ARKK does not hold. The ten largest positions are 47.6% of ARKK and 66.8% of MGK.
How do ARKK and MGK differ by sector?
The widest gap is Technology: MGK has 33.5 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.
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.