Forex
Requesting Data
Introduction
Request Forex data in your algorithm to receive a feed of exchange rates in the OnData
method. For more information about the specific dataset we use for backtests, see the FOREX dataset listing. To trade Forex live, you can use our Forex data feed.
Create Subscriptions
To create a Forex pair subscription, in the Initialize
method, call the AddForex
method. The AddForex
method returns a Forex
object, which contains a Symbol
. Save a reference to the Symbol
so you can use it in OnData
to access the security data in the Slice
.
_symbol = AddForex("EURUSD").Symbol;
self.symbol = self.AddForex("EURUSD").Symbol
To view the supported Forex pairs, see Supported Assets.
Resolutions
The following table shows the available resolutions and data formats for Forex subscriptions:
Resolution | TradeBar | QuoteBar | Trade Tick | Quote Tick |
---|---|---|---|---|
Tick | ![]() | |||
Second | ![]() | |||
Minute | ![]() | |||
Hour | ![]() | |||
Daily | ![]() |
The default resolution for Forex subscriptions is Resolution.Minute
. To change the resolution, pass a resolution
argument to the AddForex
method.
_symbol = AddForex("EURUSD", Resolution.Daily).Symbol;
self.symbol = self.AddForex("EURUSD", Resolution.Daily).Symbol
To create custom resolution periods, see Consolidating Data.
Supported Markets
The only market available for Forex pairs is Market.Oanda
, so you don't need to pass a market
argument to the AddForex
method.
_symbol = AddForex("EURUSD", market: Market.Oanda).Symbol;
self.symbol = self.AddForex("EURUSD", market=Market.Oanda).Symbol
The brokerage models have a default market for each asset class. If you set a brokerage model, you may not need to specify the market to use.
Fill Forward
Fill forward means if there is no data point for the current slice, LEAN uses the previous data point. Fill forward is the default data setting. If you disable fill forward, you may get stale fills or you may see trade volume as zero.
To disable fill forward for a security, set the fillForward
argument to false when you create the security subscription.
_symbol = AddForex("EURUSD", fillForward: false).Symbol;
self.symbol = self.AddForex("EURUSD", fillForward=False).Symbol
Margin and Leverage
LEAN models buying power and margin calls to ensure your algorithm stays within the margin requirements. The Oanda brokerage let's you use up to 50x leverage on margin accounts. To change the amount of leverage you can use for a Forex pair, pass a leverage
argument to the AddForex
method.
_symbol = AddForex("EURUSD", leverage: 35).Symbol;
self.symbol = self.AddForex("EURUSD", leverage=35).Symbol
Data Normalization
The data normalization mode doesn't affect the data that LEAN passes to OnData
or the data from history request. If you change the data normalization mode, it won't change the outcome.