ETF comparison
ARKK vs ROBO
Both Thematic.
ARK Innovation ETF · Robo Global Robotics and Automation Index ETF
Holdings overlap
5 positions appear in both funds. Buying equal dollars of ARKK and ROBO would leave roughly 5.6% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
ARKK is 20 bps cheaper than ROBO. On a $100,000 position that's about $200/yr more in fees for ROBO.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with ARKK vs ROBO.
Top shared holdings
5 shared in total| # | Holding | In ARKK | In ROBO | Overlap |
|---|---|---|---|---|
| 1 | ILLUMINA INC | 1.45% | 1.92% | 1.45% |
| 2 | NVIDIA CORP | 1.94% | 1.31% | 1.31% |
| 3 | DEERE & COMPANY | 0.97% | 1.39% | 0.97% |
| 4 | TERADYNE INC | 0.96% | 1.67% | 0.96% |
| 5 | TESLA INC | 9.74% | 0.91% | 0.91% |
Only in ARKK
39 total- TEMPUS AI INC 4.89%
- SPACE EXPLORATION TECHNOLOGIES CORP 4.87%
- CRISPR THERAPEUTICS AG 4.73%
- SHOPIFY INC 4.36%
- COINBASE GLOBAL INC 4.17%
- ADVANCED MICRO DEVICES INC 3.98%
- CIRCLE INTERNET GROUP INC 3.90%
- ROBINHOOD MARKETS INC 3.64%
- TWIST BIOSCIENCE CORP 3.31%
- 10X GENOMICS INC 3.30%
Only in ROBO
75 total- AMBARELLA, INC. 2.09%
- ROCKWELL AUTOMATION, INC. 1.90%
- FANUC CORPORATION 1.74%
- GEA Group Aktiengesellschaft 1.72%
- Yokogawa Electric Corporation 1.71%
- EMERSON ELECTRIC CO. 1.67%
- JBT MAREL CORPORATION 1.63%
- NOVANTA INC. 1.62%
- SMC CORPORATION 1.62%
- ATS CORPORATION 1.57%
Related comparisons
More comparisons with ARKK
- ARKK vs BOTZ · Global X Robotics & Artificial Intelligence ETF 4.4%
- ARKK vs GRID · First Trust NASDAQ Clean Edge Smart Grid Infrastructure Index Fund 3.8%
- ARKK vs LIT · Global X Lithium & Battery Tech ETF 3.8%
- ARKK vs CIBR · First Trust NASDAQ Cybersecurity ETF 1.7%
- ARKK vs HACK · Amplify Cybersecurity ETF 1.2%
- ARKK vs MOO · VanEck Agribusiness ETF 1.0%
More comparisons with ROBO
- ROBO vs VGT · Vanguard Information Technology Index Fund ETF Shares 4.4%
- ROBO vs XLK · State Street Technology Select Sector SPDR ETF 4.4%
- ROBO vs ARKW · ARK Next Generation Technology ETF 2.2%
- ROBO vs ARKG · ARK Genomic Revolution ETF 1.9%
- ROBO vs PHO · Invesco Water Resources ETF 1.5%
- ROBO vs MOO · VanEck Agribusiness ETF 1.4%
Percentages are holdings overlap with the named fund.
Open ARKK or ROBO at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.