ARKK vs ARKX overlap - what they share and where they differ
ARKK and ARKX share 29.9% of their weight across 14 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 ARKX
29.9%
14 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
ARKX
ARK Space & Defense Innovation ETF
Reported positions cover 100% of the fund, 34 positions · Jul 31, 2026
Top 10: 54.5%·Holdings of ARKX
Reported positions cover ARKK 97%, ARKX 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
ARKX vs ARKK side by side
ARKKARK Innovation ETF
43
stock positions reported to the SEC
60.0% of its weight is in 29 names ARKX does not hold
ARKXARK Space & Defense Innovation ETF
34
stock positions reported to the SEC
44.8% of its weight is in 20 names ARKK does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Industrials: ARKX has 39.4 points more of it.
The figures side by side
| ARKK | ARKX | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jul 31, 2026 |
| Stock positions reported | 43 | 34 |
| Weight of the ten largest | 47.6% | 54.5% |
| Largest position | TSLA 9.7% | SPCX 7.7% |
| Held alone | 29 positions, 60.0% | 20 positions, 44.8% |
| Covered by stock positions | 97% | 100% |
Holdings they share
| Stock | In ARKK | In ARKX | Counted |
|---|---|---|---|
| SPCXSPACE EXPLORATION TECHNOLOGIES CORP | 4.87% | 7.67% | 4.87% |
| AMDADVANCED MICRO DEVICES INC | 3.98% | 4.93% | 3.98% |
| TSLATESLA INC | 9.74% | 3.04% | 3.04% |
| AMZNAMAZON.COM INC | 2.95% | 4.90% | 2.95% |
| PLTRPALANTIR TECHNOLOGIES INC | 3.11% | 2.94% | 2.94% |
| GOOGLALPHABET INC | 2.62% | 4.65% | 2.62% |
| NVDANVIDIA CORP | 1.94% | 3.39% | 1.94% |
| XEX-ENERGY INC | 1.35% | 1.33% | 1.33% |
| ACHRARCHER AVIATION INC (NEW) | 1.17% | 3.12% | 1.17% |
| KTOSKRATOS DEFENSE & SECURITY SOLUTIONS INC | 1.16% | 6.22% | 1.16% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in ARKK
Only in ARKX
Questions people ask
Is ARKK the same as ARKX?
29.9% of their weight sits in the same 14 holdings. ARKK also reports TEM, CRSP, SHOP, which the other does not. ARKX also reports LHX, RKLB, AVAV, which the other does not.
How is the overlap between ARKK and ARKX 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 ARKX, so the number cannot exceed the smaller coverage.
Which holds more, ARKX or ARKK?
ARKK reports 43 stock positions and ARKX reports 34. 60.0% of ARKK's weight sits in names ARKX does not hold, and 44.8% of ARKX's weight in names ARKK does not hold. The ten largest positions are 47.6% of ARKK and 54.5% of ARKX.
How do ARKK and ARKX differ by sector?
The widest gap is Industrials: ARKX has 39.4 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.