The Price to Cash Flow Ratio (PCFR) is a valuation measure that looks at a company’s stock price relative to its cash flow per share.
Generally speaking, the lower the ratio, the better chance the company is undervalued - it basically means the company produces a lot of cash flow relative to how much it costs to acquire a share on the open market.
A very high PCFR indicates that a company is trading at a high price relative to the amount of cash flow it produces. Start-up technology companies, for instance, would generally have high PCFRs because they may not produce high levels of cash flow in early stages, but investors may bid up the price in anticipation of future growth.