As they say "Unexpected Always Happens" and BREXIT happened exactly when financial markets was least expecting it. Britain exiting from Europe will have large ramifications on European Union and might lead to disintegrating the union which will happen off-course over the years. But this brings uncertainty to businesses and that is what market dislikes most.
Though India is largely insulated from the BREXIT for the time being but if EU is to disintegrate it could be a serious problem for us also as we do substantial amount of business in Europe. Also the uncertainties in European countries might lead to capital flight to safe heavens such as USD and precious metals which would certainly impact our stock market returns.
On a medium terms basis companies which are deriving more than 50% of their revenue from Euro Zone should be watched carefully for any adverse impact of U.K exiting from Europe. Following are the top 5 companies which derive substantial amount of revenue from Euro Zone:
Company Revenue from EuroZone
1. Motherson Sumi 75%
2. Mahindra CIE 66%
3. Cox & Kings 60%
4. Tata Steel 58%
5. Mahindra Holidays 35%
Other companies to watch out are Technology companies which derives substantial revenues from Europe and they should be monitored for any adverse developments.
HCL Technologies 30%
Tech Mahindra 29%
Further Reading on BREXIT: How Europe will break on BREXIT