Daily Trading Limit
What it is:
How it works (Example):
For example, let's say that a forward contract on Company XYZ has a trading limit of X. Accordingly, if the price change exceeds X during the trading day, a "locked " occurs, and trading in the contract halts.
China has a daily trading limit of 0.5% on its national, meaning that if the price changes more than 0.5% in either direction during the day, the trading is halted until the next day.
Why it Matters:
Daily trading limits prevent extreme volatility or price manipulation in the markets. If trading approaches the upper level of daily trading limit, we say that the security had an "up limit" day. Likewise, if trading approaches the lower level of the daily trading limit, we say the security had a "down limit" day.