Precision on the exchange

Quantity and price on incoming orders are strictly held to the minimums and increments shown in the Supported Symbols Table.

However, once on the exchange, quantities and notional values may exhibit additional precision down to two decimal places past the listed “minimum order increment”.
For example, it is possible for a btcusd trade to execute with a quantity of 0.0000000001 (1e-10) BTC. This can happen due to:

• Incoming market orders that may result in partial fills
• Fees
• Holds

This additional precision is marketable once on the exchange.

Your account balances are maintained with full fractional precision for each currency.