What is the 10 Tick Rule?
Orders on the Hong Kong Stock Exchange must be priced within 10 “ticks” or increments of the last traded price. For example, if a share of ABC last traded at $10.00 and its increments were 0.01, 10 ticks would give you a minimum buy price of $9.90 and a maximum sell price of $10.10. The size of ticks depends on the price of the stock.