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Keep invested for long time. See equity capital. Background.Book value. earning per share. Price/EPS.dividend record, bonus record,General reserves and Surplus.Apart from that popularity of stock is important. Reliance brand name Rpower is trading at P/E ratio of 452. But Shree shakti rani investment has eps of 800 and price of rs 11 but no volumes. Observe for two months price fluctuations.
Tata Steel, Tata Chemicals, NTPC, M&M, L&T, ACC, Ultratech cements ,SBI, Hindustan Unilever, ITC are good to keep for long term. But use your own judgment. See Monecontrol.com or kotaksecurities.com for co History and fundamentals. ALL THE BEST. HAPPY TRADING