I am curious to know that when Tata Motors hit 60 odd levels in Mar-Apr this year then what stopped you to make additional purchase. You could have made 100%+ return on laggards like Tata Motors. IMO you need to keep flexibility and keep on fine tuning your strategy for better returns and control risks on overall PF. The advice of anirband87 is apt and to the point at the moment for you.
Happy investing.
VK