Free stock data APIs for Nordic markets: what actually works
Free APIs for Nordic equity data compared honestly: what each returns, Nordic coverage gaps, ticker conventions (.ST), and when a verified CSV beats an API.
Sources compared
| Source | Access | Price | ISIN | Coverage | Update cadence |
|---|---|---|---|---|---|
| Yahoo Finance API | Unofficial | Free (unstable) | no | Global incl. .ST tickers | 15-min |
| Finnhub | Freemium API | Free tier | no | Global; Nordic depth varies | Real-time (tier) |
| Alpha Vantage | Freemium API | Free tier (25 req/day) | no | Global; Nordic sparse | Daily |
| Nasdaq Nordic screener | Web | Free | yes | All Nordic listings | Live |
Yahoo Finance API: Works until it does not: TLS fingerprinting breaks naive clients.
Finnhub: Check symbol coverage for Small Cap before building.
Alpha Vantage: Rate limits make Nordic-wide pulls slow.
Nasdaq Nordic screener: The source of truth; no clean API, hence our verified CSV.
What our data adds
- .ST ticker convention explained with 366 examples
- ISIN support: screener yes, Yahoo no, freemium APIs partial
- When to use a snapshot CSV vs a live API (stability vs freshness)
Get the data
Swedish Listed Companies 2026
$2
More comparisons
- Swedish stock market data sources: free vs paid compared
- Swedish company data: Bolagsverket vs allabolag vs SCB vs our CSV
- Robotics datasets: 12 sources compared (supply chain, stocks, standards)
- npm package security data: npm API vs Snyk vs OSV vs GitHub Advisory
- Hemnet data access options compared (listings, sold prices, ToS reality)