The price upper and lower limit ratios for market and limit orders refer to the percentage range above and below the current market price within which an order can be executed.
For market orders, the price limit ratios typically refer to the maximum deviation from the current market price that the order will be filled. This is important to prevent the order from being executed at an unfavorable price due to sudden market fluctuations.
For limit orders, the price limit ratios refer to the maximum and minimum price levels at which the order will be filled. For example, a buy limit order may have a price limit ratio of 10%, meaning that the order will only be executed if the market price is within 10% of the order price.
The specific price limit ratios may vary depending on the trading platform and the specific asset being traded. It is important for traders to understand these ratios and adjust their orders accordingly to minimize the risk of unfavorable execution prices.