Trading member
Market basicsA broking firm admitted to membership of an exchange, through which clients’ orders reach the order book.
In plain terms
Your broker, in the exchange’s language. Exchange-level charges and obligations — such as order-to-trade penalties — apply to the member rather than to you directly.
Read the full lesson →Co-location
Trading & ordersAlso called: Colocation
Placing a trading member’s servers inside the exchange’s data centre to minimise the time taken to send and receive orders.
In plain terms
Why the book on your screen has already been acted on. It is a reason to use depth for execution decisions rather than for prediction.
Read the full lesson →Order-to-trade ratio
Trading & ordersAlso called: OTR
The number of orders a trading member places relative to the trades it completes, attracting exchange charges when it runs high.
In plain terms
The reason Indian order books flicker less than foreign ones. Placing and pulling thousands of orders costs the member money.
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