Shares of certain companies have taken a hit, with declines of up to 14% reported. This downturn is linked to a sharp correction in the grey market premium. A significant stake in the National Stock Exchange is held by New India Assurance Company Ltd, which may explain its sensitivity to developments surrounding the exchange.

The stock price of New India Assurance Company Ltd had previously rallied, but it has now fallen. IFCI shares also experienced a decline, touching a low point during the day.

Further information about these developments can be found in the original report, which provides more details about the shares and their recent performance.