Real-time quote snapshots
Query last price, previous close, OHLC, volume and change for individual quotes or multi-symbol scans.
REST · tickerCovering five major US exchanges and 14,169 symbols through REST queries and WebSocket subscriptions.
| Exchange / Category | Symbols | Data Capabilities | Frequency |
|---|---|---|---|
| NYSE | 2,553 |
Also supports instrument information, adjusted candles and adjustment factors; metrics, capital flow, company financials and events depend on instrument and permissions. | Updates during trading sessions |
| NASDAQ | 6,801 |
Also supports instrument information, adjusted candles and adjustment factors; metrics, capital flow, company financials and events depend on instrument and permissions. | Updates during trading sessions |
| AMEX | 839 |
Also supports instrument information, adjusted candles and adjustment factors; metrics, capital flow, company financials and events depend on instrument and permissions. | Updates during trading sessions |
| NYSE Arca | 2,672 |
Also supports instrument information, adjusted candles and adjustment factors; metrics, capital flow, company financials and events depend on instrument and permissions. | Updates during trading sessions |
| BATS | 1,302 |
Also supports instrument information, adjusted candles and adjustment factors; metrics, capital flow, company financials and events depend on instrument and permissions. | Updates during trading sessions |
| OTC Market | 2 |
Also supports instrument information, adjusted candles and adjustment factors; metrics, capital flow, company financials and events depend on instrument and permissions. | Updates during trading sessions |
Candlesticks are queried via REST; live subscriptions use supported channels. Endpoints, fields and historical coverage depend on the instrument, plan permissions and available data. Instrument counts do not imply full capability coverage for every instrument.
Unified access to five major US exchanges for real-time quotes, order books, trades and full-session coverage.
Query last price, previous close, OHLC, volume and change for individual quotes or multi-symbol scans.
REST · tickerReturns best bid and ask prices and sizes through REST queries and WebSocket subscriptions.
REST + WS · depthQuery recent trades and subscribe to the trade channel, with price, size, side and event time fields.
REST + WS · trades / tradeCovers US pre-market, regular, after-hours and overnight sessions for continuous cross-session market updates.
Pre-market · Regular · After-hours · Overnight# pip install websocket-client
import websocket
import json
api_key = 'your_api_key_here'
ws_url = f'wss://api.tickdb.ai/v1/realtime?api_key={api_key}'
def on_open(ws):
ws.send(json.dumps({
'cmd': 'subscribe',
'data': {
'channel': 'ticker',
'symbols': ['AAPL.US', 'TSLA.US', 'MSFT.US']
}
}))
def on_message(ws, message):
data = json.loads(message)
print('Received:', data)
ws = websocket.WebSocketApp(ws_url, on_open=on_open, on_message=on_message)
ws.run_forever() Full documentation available at API Documentation
Compare sessions, feed coverage and book depth. After-hours and overnight are distinct sessions; timestamp precision is not a latency guarantee.
| Provider | Live data / Sessions | Depth / Research | Access / Cost model | Best fit |
|---|---|---|---|---|
| TickDB Multi-market data and research | REST / WebSocket with pre-market, regular, post-market and overnight session information; availability varies by instrument. | Book, trades, candles, intraday and company research. The current standard US route provides best bid/ask; depth depends on entitlements. | API key, no trading account; REST / WebSocket / Skill / MCP / CLI. Free trial; plan-based access. | Session monitoring, US/HK dual-listing analysis, unified terminals and AI research. |
| Massive Formerly Polygon.io · US market data | WebSocket pre-market, regular and after-hours data; verify overnight separately. | Trades, NBBO quotes, aggregate bars and LULD; crypto L2 is not US stock L2. | API key; product-specific real-time and business plans. | Teams building specialized US market data products. |
| Alpaca Market data and trading API | WebSocket with separately entitled IEX, SIP, delayed SIP, BOATS and overnight feeds. | Trades, quotes and bars, alongside trading accounts. | API key; full-market and overnight rights depend on feed and plan. | Developers connecting market data, orders and accounts. |
| Alpha Vantage Query and technical indicator API | Primarily REST; real-time, delayed and extended-hours US data depend on endpoint and entitlement. | Time series, technical indicators and fundamentals. | API key; free quotas and paid entitlements. | Low-frequency research, indicators and education. |
Analyze historical candlesticks for strategy validation and parameter optimization.
Ticker, depth and trade channels for powering custom market-data interfaces.
Subscribe to US-listed Chinese ADRs and HK stocks simultaneously to monitor price spreads.
All paid plans support monthly / quarterly / semi-annual / annual billing. Prices below are annual (20% off)
Billed annually $950
Billed annually $2870
Billed annually $6710
Billed annually $8630
Sign up for a free API Key. WebSocket real-time streaming. Get started in minutes.