This work grew out of asking the simple question of “how do I rank shares amongst themselves as a best buy at a given date?” A simple question, with the implications that if there was a best buy, there was the second, third, fourth etc. if they could be so ranked. A unique way of ranking, Gx, (Growth Factor) has been developed by the author with implications for valuation and pricing of shares. If the shares are only to be held for quick trading, ranking may still be relevant to pinpoint undervaluation and potential bonus rights issues. It may be not relevant if buy/sell decisions are made on the basis of price pressures or charting. The implications of Gx flow through to valuations resulting from corporate activity such as takeovers and mergers and new offerings of securities by many companies.