can you buy some thing like an insurance for your Equity ( Stocks ) Investment?

one can "hedge" (insure) a position in a stock by buying a call or a put option related to that same stock and only pay a premium on the purchased option thus limiting the risks of potential loss should the market turn against your equity position.
So the answer is yes, you can buy a sort of an "insurance" against an equity position, however you will need an expert in financial derivatives to figure out the exact option to purchase as these products have many prices as well as expiration dates to choose from.

hi, the world is going through a liquidity crunch, after the FEDS QE so all the valuations are on the down side, so wait for a period of4 months before u enter into insurance sector, Where as if your into the Futures and options space u can so short in the financial and infrastructure for a period of3 months.

Yes stock need to be insured to curb for possible risks. Pay premium, work with the storeman to valuate the stock at any given time and have yor premium calculated.