Question

How many companies were on sensex when it was started?

Answer 1

One can identify the booms and busts of the Indian stock market through Sensex. Sensex is calculated using the "Free-float Market Capitalization" methodology. As per this methodology, the level of index at any point of time reflects the Free-float market value of 30 component stocks relative to a base period.

Answer 2

hey mate here is your answer

There are more than 1000 companies were on sensex when it was started.