I have trapped in share trading financial fraud and filled fir also what would be the next step

You regularly follow it up with the investigating police and request them for an expeditious completion of the same and then follow it up through court.

Besides follow up with IO, as rightly advised by learned senior expert Mr. T Kalaiselvan, which I fully agree and appreciate, you may file an application before jurisdictional Magistrate and seek "Status report" from concerned SHO / IO so that the investigation may be expedited.