can I use section 44ADA in following income

1. Sec 44ADA is a presumptive taxation scheme available to the assessee's who are engaged in the profession specified u/s 44AA. 
2. In your case, it is a Capital gains and it cannot be considered as a profession even if buying and selling of shares is your main profession. 
3. Hence, in your case sec 44ADA cannot be opted. 
Please correct me if the above solution has an alternative view. 

1. If you don’t have any receipt from your IT consulting profession sec 44ADA will be irrelevant for you. 
2. If you do have a receipt then sec 44ADA can be availed. It is important to note that sec 44ADA is only for profession income and it will be restricted towards income in the nature of the profession. 
3. You don't need to worry about sec 44ADA if you don't have professional receipts from IT consultation. 
Please correct me if the above solution has an alternative view. 

Your Choice. It is an optional scheme. If you find it beneficial, you can avail or you can pay tax under the normal provision.