There is no one answer to this question as different companies will naturally have different PE ratios. For example, mature companies in defensive stock sectors generally have low PE ratios, while early stage companies or companies in fast-growing sectors often have very high PE ratios. To make the most of PE ratio as a metric of company value, make sure to compare PE ratios to similar companies in similar sectors, as well as to the same company at different periods in the past to get better comparisons.