0DTE OCO Contract Sizer

How many contracts should I load?

Choose a setup-conviction preset and enter the loss you are planning for each contract. The quantity updates immediately.

Position sizing

Account size$

Contract type

SPY ATM option premium (quoted) $ Use the current at-the-money premium for the expiration and option type you plan to trade.

Setup conviction

A uses lower deployment, including qualified Extrinsic Divergence trades.

Position budget (% of account)%The conviction preset loads the existing Foxchase deployment, but this value is editable for income preservation or small-account growth. Win rate assumption%Used only to estimate expectancy with the current 1:1 bracket. It is not a forecast. Loss assumption Planned loss as % of position size%For a long option, position size is the premium paid. This changes planned risk, not the conviction preset’s contract cap. Per-contract planned loss$Planned loss: 20% of the $125 position cost. True max loss remains $125.

The default OCO bracket is 1:1: the target gain matches the planned loss percentage. A modified 1:1 can be managed after the move proves continuation. Read the 1:1 framework.

Recommended SPY Contracts

SPY contracts to load

Setup convictionA

Current position budget$4,500

Estimated total planned risk$900

Per-contract planned risk$25

ATM premium basisSPY $1.25

Premium cost / contract$125

Full-premium max exposure$4,500

Planned account risk6.0%

Expectancy / trade$360

Risk:reward framework1:1

OCO Order Size

Use the contract quantity for each linked order leg in your custom OCO template.

SPY contracts to load36

Entry / ATM basis$1.25

Planned stop$1.00

1:1 target$1.50