normal market size การใช้

• Market makers are also given 60 minutes to report trades that exceed six times the normal market size.
• The reason for this is that market makers sit  behind such a screen by being obliged to both buy and sell the share at the posted price up to what is known as normal market size.
• Trades that are deemed to be more than eight times normal market size, which is 2.5 percent of daily trading in a stock, will be allowed to be " off the book " through the market makers.