How has the total number of clients and the AUM of the registered PMS schemes trending over the last few years?

I am holding shares of McLeod Russell in my portfolio for the last many years. I find that the stock has fallen nearly 50% in the last few days. What should I do?

Is it correct that FPIs have a cumulative investment of nearly $250 billion invested in India? How has this trend grown in the last few years?

What are the P/E and the Price to Book (P/BV) ratio of some of the key indices and how has the trend moved in the last few years?

Why has there been a major proliferation of gold loan companies in the last few years?

Why have the debt burden of NHAI gone up so sharply in the last few years and is there a worry for banks?

How has been the progress of demat accounts and demat value in the last few years? Has it really grown?

Are algo trading and internet based trading on the very big in size and how has the trend moved over the last few years?

Do I understand that fundamental analysis is about value and technical analysis is about the trend of the stock or the market overall?

For the last 10 years, if I compare the growth of gold and mutual fund, which is better?

How is the 3 to 4 years prospects of Vimta lab? It acquired Emtac, an electrical/ electronic equipment testing company, which is totally different from it's present expertise area of chemical and food testing. Should I continue my investment in it?