TRADINGDATACOMPARE
LIVE · 2026-05-27

IEX Cloud (Discontinued) VS Nasdaq Data Link

Head-to-head market data API comparison.
UPDATED 2026-05-24 · 7 axes scored

WINNER · NASDAQ DATA LINK · 3/7 AXES

Quick Decision

▶ PICK IEX CLOUD (DISCONTINUED) IF DATA-API
  • Historical reference only
▶ PICK NASDAQ DATA LINK IF DATA-API
  • Quant researchers
  • Alternative data buyers
  • Macro/fundamental analysts
  • Academic researchers

Side-by-Side Matrix

METRIC IEX CLOUD (DISCONTINUED) NASDAQ DATA LINK
API Quality 3/5 3/5
Doc Quality 3/5 4/5
Data Latency second daily
SDK Languages 5 languages 5 languages
Free Tier No Yes
Affiliate Program No No
Asset Coverage Breadth 5 classes 6 classes
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 Anonymous: 20 calls/10min, 50/day; Free w/ API key: 300/10s, 2,000/10min, 50,000/day; Premium: higher limits per dataset

Asset Class Coverage

Where the two providers overlap and where each has unique coverage.

ASSET CLASS IEX CLOUD (DISCONTINUED) NASDAQ DATA LINK
Alternative Data ✓ Covered
Commodities ✓ Covered ✓ Covered
Crypto ✓ Covered
Forex ✓ Covered ✓ Covered
Futures ✓ Covered
Global Equities ✓ Covered
US Equities ✓ Covered ✓ Covered
US Options ✓ Covered
TOTAL CLASSES 5 6
Only IEX Cloud (Discontinued)
US Options · Crypto
Only Nasdaq Data Link
Global Equities · Futures · Alternative Data
Shared · 3
US Equities · Forex · Commodities

Pricing Tier Map

Full tier ladder side-by-side · names and prices as published by each provider · 1 vs 2 tiers.

IEX CLOUD (DISCONTINUED) · 1 TIERS
01
Discontinued N/A
IEX Cloud shut down on August 31, 2024
NASDAQ DATA LINK · 2 TIERS FREE TIER
01
Free $0/mo
Open datasets, limited premium access
02
Premium Custom
Institutional datasets, alternative data, bulk downloads
▲ Free Tier · Free: select open datasets; core financial data free with registration

Technical Stack Fit

SDK languages and data formats determine integration cost for your existing codebase.

DIMENSION IEX CLOUD (DISCONTINUED) NASDAQ DATA LINK
API Types REST · WebSocket · SDK REST · SDK
SDK Languages Python · JavaScript · Java · Go · Ruby Python · R · JavaScript · Ruby · Excel
Data Formats JSON JSON · CSV · Excel
Rate Limits Service discontinued Anonymous: 20 calls/10min, 50/day; Free w/ API key: 300/10s, 2,000/10min, 50,000/day; Premium: higher limits per dataset
Latency Class second daily

Fit Profile

IEX CLOUD (DISCONTINUED) · PROFILE DATA-API

Best For

  • Historical reference only

Not Ideal For

  • Any new project — service is shut down

Full IEX Cloud (Discontinued) Review
NASDAQ DATA LINK · PROFILE DATA-API

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

Full Nasdaq Data Link Review

Adjacent Comparisons

Related matchups — same category first, then cross-category for context.

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