Position sizing
Choose how each order is sized: a fixed number, the alert's number, or the alert scaled by your baseline.
Sizing mode decides how many contracts each order trades. You set it on the automation, and it applies to every account the automation targets. Lune has three modes.
The three modes#
Staticfixed contractsOptionalTrade a fixed number of contracts you set on the automation. The alert's quantity is ignored. Best when you always want the same size, no matter what the signal says.
Strategyquantity from the alertOptionalTrade the quantity that comes in the alert message. The quantity field is required. Best when your TradingView strategy already sizes each trade for you.
Scaled Strategyalert quantity scaled by your baselineOptionalTake the alert's quantity and scale it by the baseline size you set. Best when you want to follow the strategy's relative sizing but trade it larger or smaller.
Which mode to pick#
- Pick Static when your size never changes. The signal only tells Lune when to trade, not how much.
- Pick Strategy when your TradingView strategy sends the exact size you want. Make sure the alert includes
quantity, or the signal has no size to use. - Pick Scaled Strategy when the strategy's sizing is right in shape but you want to trade it up or down against your own baseline.
Futures trade in whole contracts. After any sizing, Lune rounds down to a whole number, with a minimum of 1. A result below 1 still trades 1 contract.
Per-account multipliers still apply#
Sizing mode sets the base size. Each target account then applies its own multiplier on top, so the same signal can trade different sizes across a 50k account, a 150k account, and a personal one. See Create an automation.