Securities and Exchange Board of India (Sebi) on Tuesday imposed Additional Surveillance Measures (ASM) on stocks.
The stress in midcaps is largely because of the ASM. There are mechanisms available with exchanges to curb volatility and extraordinary price movement.
This is an additional mechanism that has been introduced.
Sebi and exchanges take the call on the objective parameters that will be used to identify stocks where there has been exceptional movement or extreme volatility.