Abstract: A multi-currency interface: programmed or configured for limit orders in a customer currency for financial instruments traded in an exchange traded currency. A multi-currency interface programmed or configured for facilitating purchases of goods or services from an online merchant in multiple currencies.

Abstract: In a computerized trading system, at least one passive order from a liquidity provider is placed on a book of orders. An order received from a liquidity consumer is held for a holding period. During the holding period the order from the liquidity consumer is checked and information relating to the received order from the liquidity consumer is sent to eligible ones of one or more liquidity providers. If, during the holding period, changes to the orders on the book of orders are made by the liquidity providers, those orders are modified on the book and the book of orders is revised. Upon expiration of the holding period, the order from the liquidity consumer is matched with orders that remain on the book after any revisions.

Abstract: In a computerized trading system, at least one passive order from a liquidity provider is placed on a book of orders. An order received from a liquidity consumer is held for a holding period. During the holding period the order from the liquidity consumer is checked and information relating to the received order from the liquidity consumer is sent to eligible ones of one or more liquidity providers. If, during the holding period, changes to the orders on the book of orders are made by the liquidity providers, those orders are modified on the book and the book of orders is revised. Upon expiration of the holding period, the order from the liquidity consumer is matched with orders that remain on the book after any revisions.

Abstract: A multi-currency interface: presents, to at least one customer wishing to trade in a customer currency, a view of orders currently residing on the trading exchange in the customer currency; receives an order, from the at least one customer, denominated in the customer currency; and, if the customer currency is not the same as the exchange quoted currency, calculates a conversion rate from the customer currency to the exchange traded currency, based upon FX index prices, and generates an exchange order, denominated in the exchange quoted currency, corresponding the to the received order from the customer.

Abstract: In a computerized trading system, at least one passive order from a liquidity provider is placed on a book of orders. An order received from a liquidity consumer is held for a holding period. During the holding period the order from the liquidity consumer is checked and information relating to the received order from the liquidity consumer is sent to eligible ones of one or more liquidity providers. If, during the holding period, changes to the orders on the book of orders are made by the liquidity providers, those orders are modified on the book and the book of orders is revised. Upon expiration of the holding period, the order from the liquidity consumer is matched with orders that remain on the book after any revisions.

Abstract: A method and a system including programmed general purpose digital computers on a computer network for effectuating the real-time trading of a commodity including, but not limited to, a currency. A commodity trading method implemented at a client or trader computer connected to a computer network (e.g.