What you are buying in this major correction ? PF readjustment!

I have a diversified portfolio of 18 stocks. Highest % of 9 to 10 in ajanta and Avanti and least in Symphony of 3%. About 6 months back Symphony was the highest. As a habit I have always booked profit after 1 year of holding(due to tax concerns) and invested in other conviction ideas which have less exposure like Atul, Vinati,CARE and Suven. Exited kaveri, Atul auto. Kesar terminals, TV today network, Ashiana housing, Vmart etc. I usually exit when the % goes below 3% even if it is a good stock and wait for reentry. I don’t know whether this is a good approach. I could take a hit of 10% in the present correction. I am watching Cyient and Ashiana for reentry. I am always fully invested even though I would like to be otherwise.