ETF comparison
ARKK vs FDN
Both Thematic.
ARK Innovation ETF · First Trust Dow Jones Internet Index Fund
Holdings overlap
8 positions appear in both funds. Buying equal dollars of ARKK and FDN would leave roughly 10.5% 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
FDN is 26 bps cheaper than ARKK. On a $100,000 position that's about $260/yr more in fees for ARKK.
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 FDN.
Top shared holdings
8 shared in total| # | Holding | In ARKK | In FDN | Overlap |
|---|---|---|---|---|
| 1 | AMAZON.COM INC | 2.95% | 9.98% | 2.95% |
| 2 | ALPHABET INC | 2.13% | 4.43% | 2.13% |
| 3 | META PLATFORMS INC | 1.56% | 9.83% | 1.56% |
| 4 | ROBLOX CORP | 2.39% | 1.50% | 1.50% |
| 5 | COREWEAVE INC | 2.38% | 1.08% | 1.08% |
| 6 | SNOWFLAKE INC | 0.64% | 3.61% | 0.64% |
| 7 | ALPHABET INC | 0.49% | 5.55% | 0.49% |
| 8 | CIRCLE INTERNET GROUP INC | 3.90% | 0.15% | 0.15% |
Only in ARKK
36 total- TESLA INC 9.74%
- 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%
- ROBINHOOD MARKETS INC 3.64%
- TWIST BIOSCIENCE CORP 3.31%
- 10X GENOMICS INC 3.30%
Only in FDN
34 total- CISCO SYSTEMS INC 8.54%
- ARISTA NETWORKS INC 5.02%
- BOOKING HOLDINGS INC 4.98%
- ORACLE CORP 4.59%
- SALESFORCE INC 4.11%
- NETFLIX INC 3.90%
- DATADOG INC 3.53%
- CLOUDFLARE INC 3.22%
- DOORDASH INC 2.87%
- CIENA CORP 2.85%
Related comparisons
More comparisons with ARKK
- ARKK vs QTUM · Defiance Quantum ETF 9.8%
- ARKK vs XLK · State Street Technology Select Sector SPDR ETF 9.1%
- ARKK vs VGT · Vanguard Information Technology Index Fund ETF Shares 8.4%
- ARKK vs SKYY · First Trust Cloud Computing ETF 8.3%
- ARKK vs KOMP · State Street SPDR S&P Kensho New Economies Composite ETF 5.8%
- ARKK vs ROBO · Robo Global Robotics and Automation Index ETF 5.6%
More comparisons with FDN
- FDN vs ARKQ · ARK Autonomous Technology & Robotics ETF 10.0%
- FDN vs QTUM · Defiance Quantum ETF 7.9%
- FDN vs VGT · Vanguard Information Technology Index Fund ETF Shares 7.7%
- FDN vs XLK · State Street Technology Select Sector SPDR ETF 7.1%
- FDN vs KOMP · State Street SPDR S&P Kensho New Economies Composite ETF 2.7%
- FDN vs GRID · First Trust NASDAQ Clean Edge Smart Grid Infrastructure Index Fund 2.7%
Percentages are holdings overlap with the named fund.
Open ARKK or FDN 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.