Change Logs
2026-10-17
Market Data API Option historical bars endpoint added start_time and end_time parameters.
Changed
| Category | API | Change | Link |
|---|---|---|---|
| API | Market Data API | Option historical bars endpoint added start_time and end_time query parameters, allowing historical bars to be fetched by time range. | List Option Historical Bars |
2026-09-20
Interface version header
x-versionupdated fromv2tov3across the Authentication documents.
Changed
| Category | API | Change | Link |
|---|---|---|---|
| Docs | — | x-version request header updated from v2 to v3 in the required headers table. | Authentication Overview |
| Docs | — | x-version request header updated from v2 to v3 in the required headers table and in the Python/Java signature examples; the example endpoint used throughout was updated from GET /openapi/account/list to GET /trading/accounts/list. | Signature |
| Docs | — | x-version updated from v2 to v3 in the request header example. | Token |
2026-09-12
Market Data API: Expanded the Screeners and Fundamentals modules with additional endpoints.
New
| Category | API | Change | Link |
|---|---|---|---|
| API | Market Data API | Added 4 Screeners endpoints: Market Sectors, Market Sectors Detail, High Dividend Rank, and 52 Week High/Low. | Market Sectors Market Sectors Detail High Dividend Rank 52 Week High/Low |
| API | Market Data API | Added 20 Fundamentals endpoints: Forecast EPS, Filings, Earnings Calendar, Dividend Calendar, Capital Flow, Industry Comparison, Indicators, Income, Cashflow, Balancesheet, Alert, Fund Brief, Fund Performance, Fund NetValue, Fund Holdings, Fund Dividends, Fund Rating, Fund Splits, Fund Files, and Fund Allocation. | Forecast EPS Filings Earnings Calendar Dividend Calendar Capital Flow Industry Comparison Indicators Income Cashflow Balancesheet Alert Fund Brief Fund Performance Fund NetValue Fund Holdings Fund Dividends Fund Rating Fund Splits Fund Files Fund Allocation |
2026-08-29
Trading API & Market Data API: Options trading and options market data now supported.
New
| Category | API | Change | Link |
|---|---|---|---|
| API | Trading API | Added Options trading support — place, preview, replace, and cancel single-leg options orders (US Options). | Options Trading |
| API | Trading API | Added List Option Contracts endpoint to query option contract information by underlying symbol, status, and other attributes. | List Option Contracts |
| API | Market Data API | Added Options Market Data category with 3 endpoints: List Option Ticks, List Option Snapshots, List Option Historical Bars. | Options Market Data |
2026-08-22
Optimized API endpoint descriptions and paths.
Changed
| Category | API | Change |
|---|---|---|
| API | Trading API | Optimized API endpoint descriptions and paths for clarity and consistency. |
2026-07-21
EU region: Updated API support contact email.
Changed
| Category | API | Change | Link |
|---|---|---|---|
| Docs | — | Updated EU API support email from support-nl@webull.eu to support-eu@webull.eu | — |
2026-06-27
Market Data API: Added Fundamentals, Screener, and Watchlist modules.
New
| Category | API | Change | Link |
|---|---|---|---|
| API | Market Data API | Added Fundamentals category with 3 endpoints: Company Profile, Analyst Target Price, Analyst Rating | Fundamentals |
| API | Market Data API | Added Screener category with 2 endpoints: Stock Top Gainers/Losers Rank, Top Active | Screener |
| API | Market Data API | Added Watchlist category with 8 endpoints: Get Watchlist, Create Watchlist, Update Watchlist, Delete Watchlist, Get Watchlist Instruments, Add Instruments to Watchlist, Remove Instruments from Watchlist, Update Instruments Sort Order | Watchlist |