Price-earnings ratio (P/E)
A high P/E ratio could mean the stocks are overvalued. Therefore, it could be useful to compare competitor companies' P/E ratios to find out if the stocks you're looking to trade are overvalued. P/E ratio is calculated by dividing the market value per share by the earnings per share (EPS).
Share Price ÷ Earnings Per Share = P/E Ratio
You generally use the P/E ratio by comparing it to other P/E ratios of companies in the same industry or to past P/E ratios of the same company. If you compare same-sector companies, the one with the lower P/E may be undervalued.
Price-to-sales ratio (P/S).
The price-to-sales ratio can be used when a stock's P/E ratio can't be measured. This ratio represents the current stock price divided by the sales per share. The higher the ratio, the more likely it may be that a stock is overvalued.
Beta is an input into the CAPM and measures the volatility of a security relative to the overall market. SML is a graphical depiction of the CAPM and plots risks relative to expected returns. A security plotted above the security market line is considered undervalued and one that is below SML is overvalued.
One of the quickest ways to gauge whether a stock is undervalued is to compare its valuation ratios to the rest of its industry or the overall market. If the ratios are below that of the industry average or a broad market index such as the S&P 500, you may have a bargain on your hands.
Investors and analysts consider stocks which have a P/E ratio of 50 or above to be an overvalued share, especially in comparison to a stock which has a ratio at par with or below 10.
Typically, the average P/E ratio is around 20 to 25. Anything below that would be considered a good price-to-earnings ratio, whereas anything above that would be a worse P/E ratio.
A good PE (Price to Earnings) ratio in India usually falls between 12 and 20, indicating that a company's stock is neither overvalued nor undervalued. This range balances risk and growth potential, making it ideal for Indian stock market investment.
A beta coefficient of less than 1 means that a stock tends to be less volatile than the overall market. Utility and real estate stocks are two examples of industries that typically have low betas. A beta coefficient of more than 1 means that a stock tends to be more volatile than the overall market.
EPS is the net income divided by the number of shares outstanding, and is a common way to express profits in the investing world. You want your stock's EPS up 25% or more compared with the year-ago quarter in the most recent quarter or two. Preferably, EPS should be increasing over recent quarters as well.
Fair Value Estimate for Apple
With its 2-star rating, we believe Apple's stock is overvalued compared with our long-term fair value estimate of $200 per share, which implies a fiscal 2025 adjusted price/earnings multiple of 27 times, an enterprise value/sales multiple of 7 times, and a free cash flow yield of 4%.
Conventionally, a PB ratio of below 1.0, is considered indicative of an undervalued stock. Some value investors and financial analysts also consider any value under 3.0 as a good PB ratio. However, the standard for “good PB value” varies across industries.
Very low vs very high PE ratios
It is arguable that a PE of five or less is not a remarkable bargain. While it might look as if the company's prospects are being viewed too negatively, it is not a bad rule of thumb to filter out companies with a PE below this level.
According to Tesla's latest financial reports and stock price the company's current price-to-earnings ratio (TTM) is 115.76. At the end of 2022 the company had a P/E ratio of 30.6.
Apple (AAPL) PE Ratio (TTM) : 38.55 (As of Jan. 14, 2025)
Relative earnings analysis is the most common way to identify an overvalued stock. This metric compares earnings to some comparable market value, such as price. The most popular comparison is the P/E ratio, which analyzes a company's stock price relative to its earnings.
Price-to-book ratio (P/B)
P/B ratio is used to assess the current market price against the company's book value (assets minus liabilities, divided by number of shares issued). To calculate it, divide the market price per share by the book value per share. A stock could be undervalued if the P/B ratio is lower than 1.
What Does Overvalued Mean? An overvalued asset is an investment that trades for more than its intrinsic value. For example, if a company with an intrinsic value of $7 per share trades at a market value $13 per share, it is considered overvalued.
Although the average standard P/E ratio is around 20 to 25. Anything below that would be considered a good price-to-earnings ratio, Some world famous invester consider below 15 is good PE Ratio to invest in the stock.