1. There are three valid English letters on the interface of establishing market list, namely GTC, IOC and FOK. Many investors don't know what they mean, even online. The following are the meanings of these three letters:

GTC: It is valid until it is cancelled, that is, until it is cancelled.

IOC: Immediate or cancellation, immediate implementation or cancellation.

Fokker: Fill or kill, or all or nothing.

2.GTC = The order has not been cancelled. The entrustment is valid on the same day and invalid on the next day. If the trader wants to keep the entrustment valid, he can specify it to be valid before canceling it until the transaction is completed, the option is cancelled or the option reaches the last trading day.

FOK=Fill-or-Kill Order To close the transaction or cancel the delegation, all delegations must be executed immediately, otherwise the delegation method will be cancelled.

Close the transaction immediately or cancel the order immediately. IOC: The entrusted order must be closed immediately, otherwise it will be cancelled. Complete the transaction or cancel the order Fill or Kill, FOK: the entrusted order must be completed in full, otherwise it will be cancelled immediately.

Extended data:

From the nature and types of transactions, foreign exchange transactions can be divided into the following two categories:

1. Basic foreign exchange transactions to meet customers' real trade and capital trading needs;

2. On the basis of basic foreign exchange transactions, foreign exchange derivatives transactions are conducted to avoid and prevent exchange rate risks or for foreign exchange investment and speculative needs.

The basic foreign exchange transactions belonging to the first category are mainly spot foreign exchange transactions, while foreign exchange derivatives transactions include forward foreign exchange transactions, foreign exchange selective transactions, swap transactions, swap transactions and so on.

There are two main reasons for foreign exchange transactions. About 5% of daily transaction turnover is due to companies and government departments buying or selling their products and services abroad, or having to convert the profits they earn abroad into their own currencies. The other 95% transactions are for profit or speculation.

For speculators, the best trading opportunity is always to trade the most frequently traded (and therefore the most liquid) currencies, which are called "major currencies". Today, about 85% of daily transactions are in these major currencies, including US dollar, Japanese yen, Euro, British pound, Swiss franc, Canadian dollar and Australian dollar.

Baidu encyclopedia-foreign exchange trading