Aggregates (Per Minute)
WS
Delayed: wss://delayed.polygon.io/futures
Real-Time: wss://socket.polygon.io/futures
Futures WebSocket access is currently in beta and coming soon.
Stream minute-by-minute aggregated OHLC (Open, High, Low, Close) and volume data for a specified futures contract ticker via WebSocket. Aggregates are continuously updated in Central Time (CT) and are constructed from all trades occurring within each defined aggregation window. If no trades occur during the window, no aggregate bar is emitted, indicating a period of inactivity. The response includes key metrics such as open, high, low, close, trade volume, and the start and end timestamps for each window.
Use Cases: Real-time monitoring, dynamic charting, intraday strategy development, automated trading.
Parameters
ticker
string
required
Specify a future ticker or use * to subscribe to all future tickers.
You can also use a comma separated list to subscribe to multiple future tickers.
You can retrieve available future tickers from our Futures Contracts API.
Response Attributes
ev
enum (AM)
The event type.
sym
string
The ticker symbol for the given future.
v
number
The tick volume.
dv
number
The total US dollar value of shares traded within the aggregate window.
o
number
The opening tick price for this aggregate window.
c
number
The closing tick price for this aggregate window.
h
number
The highest tick price for this aggregate window.
l
number
The lowest tick price for this aggregate window.
n
number
The total number of transactions that occurred within the aggregate window
s
integer
The start timestamp of this aggregate window in Unix Milliseconds.
e
integer
The end timestamp of this aggregate window in Unix Milliseconds.