Does Nyria open part of a spread?

No. It opens whole spreads only.

How is a credit spread counted?

By its strike width, times 100.

Where do I set the budget?

On the Size step of Deploy bot, as Budget per entry.

Guide

How many spreads does Nyria open for Budget per entry?

Nyria counts each debit spread at its net debit and each credit spread at its strike width, times 100. It opens as many whole spreads as fit in Budget per entry. A $1,000 setting opens two $5-wide credit spreads. If one spread costs more, the bot logs it and skips the trade.

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Official documentation

Nyria docs: Multi-leg options strategies

Size a spread bot with Budget per entry

1
Find the cost of one spread
Debit: the net debit. Credit: the strike width.
2
Multiply by 100
One contract covers 100 shares.
3
Divide the budget
Budget per entry divided by the cost of one spread.
4
Round down
Only whole spreads are opened.
5
Raise it if needed
If one spread costs more, increase Budget per entry.

How a spread is counted

A debit spread counts at its net debit.
A credit spread counts at its strike width.
Both are multiplied by 100 for one contract.

A worked example

A credit spread $5 wide counts as $500.
A $1,000 setting fits two of them.
A $900 setting fits one.

When one spread does not fit

The bot logs that one spread costs more than its Budget per entry.
It skips the trade and places nothing.
Raise Budget per entry above the cost of one spread.

Where to set it

Open the strategy and select Deploy bot.
Budget per entry sits on the Size step.
The Account step comes after it.

Questions

Does Nyria open part of a spread?: No. It opens whole spreads only.
How is a credit spread counted?: By its strike width, times 100.
How is a debit spread counted?: By its net debit, times 100.
What happens if one spread costs more?: The bot logs it and skips the trade.
Where do I set the budget?: On the Size step of Deploy bot, as Budget per entry.

All questions