Rule Of 20 - Fair Value Estimation by Inflation & Earnings (TG)The Rule Of 20 is a heuristic calculation to find the fair value of an asset or market given its earnings and current inflation.
Its calculation is straightforward: the fair multiple of the price or price-to-earnings ratio of a stock should be 20 minus the rate of inflation.
In math terms: fair_price-to-earnings_ratio = (20 - inflation) ; fair_value = current_price * fair_price-to-earnings_ratio / real_price-to-earnings_ratio
For example, if a stock or index was trading on 11 times earnings and inflation was 2%, then the theory would be that the fair price-to-earnings ratio would be 20-2 = 18, which is much higher than the real price-to-earnings ratio of 11, and hence the asset would be undervalued.
Conversely, a market or company that was trading on 18 times price-to-earnings ration when inflation was 8% was seen as overvalued, because of the fair price-to-earnings ratio being 20-8=12, hence much lower than the real price-to-earnings ratio of 18.
We can then project the delta between the fair PE and real PE onto the asset's value to obtain the projected fair value, which may be a target of future value the asset may reach or hover around.
For example, as of 1st November 2022, SPX stood at 3871.97, with a PE ratio of 20.14 and an inflation in the US of 7.70. Using the Rule Of 20, we find that the fair PE ratio is 20-7.7=12.3, which is much lower than the current PE ratio of 20.14 by 39%! This may indicate a future possibility of a further downside risk by 39% from current valuation levels.
The origins of this rule are unknown, although the legendary US fund manager Peter Lynch is said to have been an active proponent when he was directing the Fidelity’s Magellan fund from 1977 to 1990.
For more infos about the Rule Of 20, reading this article is recommended: www.sharesmagazine.co.uk
This indicator implements the Rule Of 20 on any asset where the Financials are availble to TradingView, and also for the entire SP:SPX index as a way to assess the wider US stock market. Technically, the calculation is a bit different for the latter, as we cannot access earnings of SPX through Financials on TradingView, so we access it using the QUANDL:MULTPL/SP500_PE_RATIO_MONTH ticker instead.
By default are displayed:
current asset value in red
fair asset value according to the Rule Of 20 in white for SPX, or different shades of purple/maroon for other assets. Note that for SPX there is only one calculation, whereas for other assets there are multiple different ways to calculate earnings, so different fair values can be computed.
fair price-to-earnings ratio (PE ratio) in light grey.
real price-to-earnings ratio in darker grey.
This indicator can be used on SP:SPX ticker, and on most NASDAQ:* tickers, since they have Financials integrated in TradingView. Stocks tickers from other exchanges may not provide Financials data, so this indicator won't work then. If this happens, try to find the same ticker on NASDAQ instead.
Note that by default, only the US stock market is considered. If you want to consider stocks or assets in other regions of the world, please change the inflation ticker to a ticker that reflect the target region's inflation.
Also adding a table to ease interpretation was considered, but then the Timeframe MTF parameter would not work, and since the big advantage of this indicator is to allow for historical comparisons, the table was dropped.
Enjoy, and keep in mind that all models are wrong, but some are useful.
Trade safely!
TG
Price-to-earnings
Silen's Financials P/E & P/S[x10] RatesThis script aims to give a better visualization of P/E and P/S rates compared to the build-in "Price to earnings ratio" and "Price to sales ratio" in the "Financials" Section of Tradingview. For those of you don't know, those rates compare earnings and sales with your share price in regard to market cap and outstanding shares.
The scripts differs to the build-in versions in the following points:
- P/E & P/S rates are combined in one indicator
- Negative P/E rates are displayed better: Positive P/E rates are green, Negative P/E rates are red
- For visualization reasons, the indicator will cap positive and negative P/E rates at 100. (P/E rates above those levels are not siginificant either way)
- P/E & P/S rate are directly displayed on the graph
- Both P/E and P/S rates are combined on one left scale
- For visualization reasons, P/S rate is showing 10x the actual P/S rate. Using the standard P/S rate would result in hard-to-recognize changes of the P/S line.
To sum up:
- Positive P/E rates are green
- Negative P/E rate are red
- P/S rates are multiplied by 1 0
- P/S rates are yellow
How to use P/E and P/S rates:
The US market average for P/E rates is roughly ~18 in the US right now (10/2022) while the market average for P/S rates is roughly ~3 in the US. Note that average P/E and P/S can change when the market situation changes.
P/E and P/S rates help you value your stock better and help you decide whether your stock is undervalued or overvalued compared to the market or the industry when it comes to earnings and sales. If you compare to Market averages, a positive P/E of less than 18 means that your stock is likely unvervalued. A P/S rate below 3 (30 in the chart!) means that your stock is likely undervalued as well. If your stock shows rates above those, it is likely that it is overvalued compared to market averages.
Please note that P/E and P/S rates are not the only factors that make up a stock valuation. Valuations are complex and subjective.
A positive P/E rate also means that your company is profitable.
A Negative P/E rate means that your company is unprofitable.
If you have any questions or feedback let me know!
Disclaimer: This script doesn't show the actual P/S rate. It shows the P/S rate multiplied by 10, due to visualization issues. Positive P/E Rates above 100 are displayed as 100. Positive P/E rates are green, Negative P/E rates are red and multiplied by -1.
Disclaimer2: @Tradingview_Team: I couldn't find the right category for this script but categories are mandatory. I assume that "Breadth Indicators" is still the closest there is. Please let me know if you want me to change the category.
Disclaimer3: For visualization, the opacity of the displayed image is 70%. The standard opacity for the P/E and P/S lines is 50% and can be changed in the indicator settings. I found this setting more useful when working together with other indicators on the same chart
Disclaimer4: Earnings Per Share, Total Revenue used are TTM. Total Shares Outstanding used are FQ.
