Increment sizes

Every order on the exchange must use a price and a quantity that fit the increments for its price bucket. A bucket is a price range, and each bucket sets its own minimum price step and quantity step. The exchange rejects an order that doesn't fit.

Minimum increments

Bucket	Lower Price ($)	Upper Price ($)	Tick Size ($) - Quote Increment	Lot Size - Base Increment	Minimum Tradable Notional
1	500,000.00000	∞	1	0.0000001	1.00
2	100,000.00000	<= 499,999.5000000000	0.5	0.000001	1.00
3	10,000.00000	<= 99,999.9000000000	0.1	0.00001	1.00
4	1,000.00000	<= 9,999.9900000000	0.01	0.0001	1.00
5	10.00000	<= 999.9990000000	0.001	0.001	1.00
6	0.10000	<= 9.9999000000	0.0001	0.1	1.00
7	0.00100	<= 0.0999990000	0.000001	10	1.00
8	0.00001	<= 0.0000999900	0.00000001	1,000	1.00
9	0.00000	<= 0.0000099999	0.0000000001	100,000	1.00

• Bucket: the pricing tier for a range of prices.
• Lower Price ($): the minimum price for the bucket, in the quote asset of the instrument pair.
• Upper Price ($): the maximum price for the bucket, in the quote asset of the instrument pair. ∞ means no upper bound.
• Tick Size ($) - Quote Increment: the smallest allowed change in the quoted price within the bucket.
• Lot Size - Base Increment: the smallest quantity change in the base asset that can be traded in the bucket.
• Minimum Tradable Notional: the smallest notional of an instrument that can be traded, set by the exchange.

Quote-sized order behavior

When you size an order in the quote asset instead of the base asset, the exchange converts it to the largest executable base quantity that fits that notional. That quantity still respects the base increment at the final price level consumed from the book.

So a quote-sized order can fill slightly less than the amount you asked for. The exchange doesn't loosen your limit price to fill the remainder. The remainder stays unfilled because it is smaller than one base increment at that price.

In schema v2026_01_23, the POST /v1/cefi/markets/quote response also reports:

• notional: the expected quote amount that would execute from visible book liquidity.
• notional_residual: the portion of the requested quote amount left over after increment rounding.

Next steps

• Preview a quote-sized order with Compute market quote.
• See Price bands for the price check that runs alongside the increment check.