IEX Cloud (Discontinued) vs Nasdaq Data Link
Head-to-head comparison of two trading data providers. Updated 2026-05-24.
Overall winner: Nasdaq Data Link — wins 2 of 6 comparison axes.
Side-by-Side Comparison
| Feature | IEX Cloud (Discontinued) | Nasdaq Data Link |
|---|---|---|
| API Quality | 3/5 | 3/5 |
| Doc Quality | 3/5 | 4/5 ✓ |
| Free Tier | No | Yes ✓ |
| Affiliate Program | No | No |
| Data Latency | second | daily |
| SDK Languages | 5 languages | 5 languages |
| Asset Coverage | US Equities, US Options, Crypto, Forex, Commodities | US Equities, Global Equities, Futures, Forex, Commodities, Alternative Data |
| Historical Depth | Service discontinued | 50+ years on select datasets; varies widely |
| Starting Price | N/A | $0/mo |
| Rate Limits | Service discontinued | Free: 50 calls/day; Premium: higher limits per dataset |
IEX Cloud (Discontinued): Best For
- Historical reference only
Not Ideal For
- Any new project — service is shut down
Nasdaq Data Link: Best For
- Quant researchers
- Alternative data buyers
- Macro/fundamental analysts
- Academic researchers
Not Ideal For
- Real-time trading systems
- Tick data / HFT
- Crypto
- Intraday strategies
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