ARKK vs MDY
ARK Innovation ETF vs State Street SPDR S&P MIDCAP 400 ETF Trust
Last updated: 2026-04-02
ARK Innovation ETF (ARKK) is an exchange-traded fund issued by ARK that provides exposure to thematic - innovation securities. It charges a high expense ratio of 0.75%. Launched in 2014, the fund has a 12-year track record.
State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) is an exchange-traded fund issued by State Street that provides exposure to mid-cap U.S. companies balancing growth potential and stability. It charges a moderate expense ratio of 0.24%. The fund offers a moderate dividend yield of 1.15%. Launched in 1995, the fund has a 31-year track record.
Quick Verdict
MDY is significantly cheaper at 0.24% vs 0.75% expense ratio, saving you approximately $978 per $10,000 invested over 10 years. Over the past year, ARKK has significantly outperformed with a 38.6% return vs 13.9%.
Key Metrics
Performance Chart
Indexed to 100 at start (5-year comparison)
Performance Comparison
Fee Impact Over Time
Estimated fee cost difference assuming 8% annual returns
Risk Metrics
Based on 5 years of daily returns
Dividend Comparison
Top Holdings
0 of top 10 holdings overlap (0% overlap in top holdings)
ARKK Top Holdings
| Name | Weight |
|---|---|
| Tesla Inc | 1088.03% |
| CRISPR Therapeutics AG | 548.07% |
| Roku Inc | 500.14% |
| Tempus AI Inc | 487.20% |
| Coinbase Global Inc | 462.29% |
| Shopify Inc | 424.50% |
| Robinhood Markets Inc | 399.82% |
| Advanced Micro Devices Inc | 397.53% |
| Teradyne Inc | 357.06% |
| Beam Therapeutics Inc | 353.11% |
MDY Top Holdings
| Name | Weight |
|---|---|
| Ciena Corp | 102.57% |
| Coherent Corp | 90.18% |
| Lumentum Holdings Inc | 81.25% |
| Flex Ltd | 69.47% |
| Twilio Inc | 67.05% |
| United Therapeutics Corp | 65.23% |
| Pure Storage Inc | 65.05% |
| Casey's General Stores Inc | 63.89% |
| Curtiss-Wright Corp | 63.20% |
| Illumina Inc | 62.31% |
Which One Should You Choose?
Choose MDY if...
you want the lowest fees and plan to buy and hold long-term. Over decades, the expense ratio difference compounds significantly.
Choose ARKK if...
recent performance momentum matters to your strategy. Note that past performance doesn't guarantee future results.