Borojoa,in any given financial year u can be classified as...

Borojoa,in any given financial year u can be classified as either an investor or trader,not both.An investor that keeps shares for a year or more is deemed to have triggered a capital gains situation same as if u bought a house as an investment,rented it out for a year or more and then sold at profit.Your profit on your share or house after u sold
less any expenses is halved and goes straight on your income for that financial year.

EG. shares bought and held for a year profit=$50K
Your day job u earn a salary of say $60K
profit from shares is halved,now $25k and goes on your income.Therefore $25k(shares)+$60k(salary)=$85k earnings
for that financil year and u will be taxed accordingly.