taxation of share profit

A limited copany named ABC Exporters Ltd. presently not carring export activity invest in mutual fund and stocks.
It invest in shares on delivery basis and also on future basis.
The profit / loss of mutual fund are being treated and assessed under capital gain.

Pl guide me in view of section 43 (5) and explanation to section 73 whether the profit / loss on trading of shares on delivery basis would be either business income or speculative income or capital gain. You can refer to some other section also if any.

Also guide what would be situation if profit / loss is on trading of shares on future basis