Quote:
Originally Posted by
igxqrrl 
I'm not sure what you're hoping it links to?
What do you think?
Quote:
Originally Posted by
igxqrrl 
Much like P/E, PEG is just another tool for comparing valuation.
I am afraid you don't really get it.
The P/E ratio (where 'E' is forward earnings) has a very specific meaning that derives from valuation fundamentals, in turn derived from standard DCF models of firm/equity valuation. The value of an enterprise is its expected future Unlevered Free Cash Flows discounted at its cost of capital. If we assume that earnings are a decent proxy for UFCF - which would roughly be the case if a firm does not have too much debt, and Depreciation equals Capex, and Change in Working Capital is zero - then it says that equity value is the sum of expected future earnings discounted at its cost of equity (call it rE). Under assumptions about average long-run growth in earnings (call it 'g'), it can easily shown that:
P/E = 1/[rE g].
In other words, the P/E ratio is a very specific statement about a firm's growth-adjusted discount rate. High P/E ratios are associated, in other words, with high expected earnings long-run growth rates, and low (more precisely, lower-than-expected) cost of equity.
Care to tell me what the 'PEG' means, in similar terms?
Quote:
Originally Posted by
igxqrrl 
P/E can be useful for comparing like companies. But the example given earlier was trying to the P/E of Apple vs. Amazon. In those cases, PEG is another widely used tool.
P/E has nothing necessarily to do with 'like' companies. It can be used to compare the earnings potential, relative to growth potential, of any company/asset relative to any other company/asset.
To say that 'PEG is a widely-used tool' to justify it is like saying 'astrological forecasts are widely read' so the pattern of constellations must affect our lives.