Best of the Week
Most Popular
1. The Trump Stock Market Trap May Be Triggered - Barry_M_Ferguson
2.Why are Central Banks Buying Gold and Dumping Dollars? - Richard_Mills
3.US China War - Thucydides Trap and gold - Richard_Mills
4.Gold Price Trend Forcast to End September 2019 - Nadeem_Walayat
5.Money Saving Kids Gardening Growing Giant Sunflowers Summer Fun - Anika_Walayat
6.US Dollar Breakdown Begins, Gold Price to Bolt Higher - Jim_Willie_CB
7.INTEL (INTC) Stock Investing to Profit From AI Machine Learning Boom - Nadeem_Walayat
8.Will Google AI Kill Us? Man vs Machine Intelligence - N_Walayat
9.US Prepares for Currency War with China - Richard_Mills
10.Gold Price Epochal Breakout Will Not Be Negated by a Correction - Clive Maund
Last 7 days
Gold Bull Market Ultimate Upside Target - 17th Sep 19
Gold Spikes on the Saudi Oil Attacks: Can It Last? - 17th Sep 19
Stock Market VIX To Begin A New Uptrend and What it Means - 17th Sep 19
Philippines, China and US: Joint Exploration Vs Rearmament and Nuclear Weapons - 17th Sep 19
What Are The Real Upside Targets For Crude Oil Price Post Drone Attack? - 17th Sep 19
Curse of Technology Weapons - 17th Sep 19
Media Hypes Recession Whilst Trump Proposes a Tax on Savings - 17th Sep 19
Understanding Ways To Stretch Your Investments Further - 17th Sep 19
Trading Natural Gas As The Season Changes - 16th Sep 19
Cameco Crash, Uranium Sector Won’t Catch a break - 16th Sep 19
These Indicators Point to an Early 2020 Economic Downturn - 16th Sep 19
Gold When Global Insanity Prevails - 16th Sep 19
Stock Market Looking Toppy - 16th Sep 19
Is the Stocks Bull Market Nearing an End? - 16th Sep 19
US Stock Market Indexes Continue to Rally Within A Defined Range - 16th Sep 19
What If Gold Is NOT In A New Bull Market? - 16th Sep 19
A History Lesson For Pundits Who Don’t Believe Stocks Are Overvalued - 16th Sep 19
The Disconnect Between Millennials and Real Estate - 16th Sep 19
Tech Giants Will Crash in the Next Stock Market Downturn - 15th Sep 19
Will Draghi’s Swan Song Revive the Eurozone? And Gold? - 15th Sep 19
The Race to Depreciate Fiat Currencies Is Accelerating - 15th Sep 19
Can Crypto casino beat Hybrid casino - 15th Sep 19
British Pound GBP vs Brexit Chaos Timeline - 14th Sep 19
Recession 2020 Forecast : The New Risks & New Profits Of A Grand Experiment - 14th Sep 19
War Gaming the US-China Trade War - 14th Sep 19
Buying a Budgie, Parakeet for the First Time from a Pet Shop - Jollyes UK - 14th Sep 19
Crude Oil Price Setting Up For A Downside Price Rotation - 13th Sep 19
A “Looming” Recession Is a Gold Golden Opportunity - 13th Sep 19
Is 2019 Similar to 2007? What Does It Mean For Gold? - 13th Sep 19
How Did the Philippines Establish Itself as a World Leader in Call Centre Outsourcing? - 13th Sep 19
UK General Election Forecast 2019 - Betting Market Odds - 13th Sep 19
Energy Sector Reaches Key Low Point – Start Looking For The Next Move - 13th Sep 19
Weakening Shale Productivity "VERY Bullish" For Oil Prices - 13th Sep 19
Stock Market Dow to 38,000 by 2022 - 13th Sep 19 - readtheticker
Gold under NIRP? | Negative Interest Rates vs Bullion - 12th Sep 19
Land Rover Discovery Sport Brake Pads and Discs's Replace, Dealer Check and Cost - 12th Sep 19
Stock Market Crash Black Swan Event Set Up Sept 12th? - 12th Sep 19
Increased Pension Liabilities During the Coming Stock Market Crash - 12th Sep 19
Gold at Support: the Upcoming Move - 12th Sep 19
Precious Metals, US Dollar, Stocks – How It All Relates – Part II - 12th Sep 19
Boris Johnson's "Do or Die, Dead in a Ditch" Brexit Strategy - 11th Sep 19
Precious Metals, US Dollar: How It All Relates – Part I - 11th Sep 19
Bank of England’s Carney Delivers Dollar Shocker at Jackson Hole meeting - 11th Sep 19
Gold and Silver Wounded Animals, Indeed - 11th Sep 19
Boris Johnson a Crippled Prime Minister - 11th Sep 19
Gold Significant Correction Has Started - 11th Sep 19
Reasons To Follow Experienced Traders In Automated Trading - 11th Sep 19
Silver's Sharp Reaction Back - 11th Sep 19
2020 Will Be the Most Volatile Market Year in History - 11th Sep 19
Westminister BrExit Extreme Chaos Puts Britain into a Pre-Civil War State - 10th Sep 19
Gold to Correct as Stocks Rally - 10th Sep 19
Market Decline Will Lead To Pension Collapse, USD Devaluation, And NWO - 10th Sep 19
Stock Market Sector Rotation Giving Mixed Signals About The Future - 10th Sep 19
The Online Gaming Industry is Going Up - 10th Sep 19

Market Oracle FREE Newsletter

Nadeem Walayat Financial Markets Analysiis and Trend Forecasts

Will the Stock Market PE Ratio Expand or Contract?

InvestorEducation / Learning to Invest Aug 07, 2007 - 01:00 PM GMT

By: Hans_Wagner

InvestorEducation

Knowing whether the PE ratio is going to expand or contract is an important factor when trying to beat the market . This is the first of a four part series on which direction the PE ratio for the S&P 500 will go over the next couple of years. First, let's briefly go over how to use the PE ratio and then we will look at ways to get the underlying PE ratio for the S&P 500. It is not as easy as one might first think. In the later parts we will examine the potential for the S&P 500 PE ratio to expand, contract and then provide an opinion on what investors should do.


An Overview of the PE Ratio

The price-to-earnings PE ratio is very useful to value stocks. It is calculated by taking a company's share price and dividing this by its earnings per share. This ratio provides a measure of the price being paid for the earnings. The higher the PE ratio the more investors are paying for the underlying earnings.

The more growth the company has experienced or is expected to see, the higher the PE ratio will be. On the other hand the PE ratio can also be an indication that the company is overvalued and the price of the company might fall as investors realize the extent of their problems.

A low PE can signal a good time to buy, but it can also mean that the company is having problems. The PE ratio can be very helpful in assessing stocks but it needs to be considered along with other important factors.

The PE chart of a company or index over time can tell us a lot about how risky the investment is or if it's a good time to buy in. When considered with future earnings, forecasts can be made on the future price of the company.

Over time PE ratios grow and contract. This can be caused by the economy or earnings expectations. For example if a company's earnings increase by 30% and the PE ratio remains the same, then the price of the stock should increase by 30% as well. On the other hand, if earnings go up 30% but the PE pulls back 30%, due to lower earning forecasts, you are left with a stock that didn't go anywhere.

Basically the price of a stock can be explained by the growth in earnings and the expansion or contraction of the PE ratio. You can find the PE ratio for a stock on most popular stack sites such as finance.yahoo.com

PE Ratios for Indexes

Unfortunately the PE of an index - the total price of the index divided by its total earnings - is a little more difficult to come upon. To get this information, you have to go to the source - the index's publishers. For example, you can find the PE for the S&P 500 on the  Standard & Poor's website  and for the DJIA on the Dow Jones Indexes website .

Once there you must search around for the index in question as well as the PE ratio. There are no readily available charts that you can use to evaluate the longer term trends.

Other Sources for the PE Ratio for the S&P 500

You can search for PE ratio charts for various indexes on the Web. A brief search gave me the charts below. 

The two charts below are from Ticker Sense . The first one shows STP 500 price and PE ratio from 1986 to March 2007. The key observation on the first chart is the fall in the PE ratio as the S&P 500 grew. Usually the PE ratio helps the S&P 500 increase in value by expanding itself. However, keep in mind that the PE ratio was declining from the technology bubble of 2000.

Peratio

The second chart is for the S&P 500 price and PE ratio from May 2006 to March 2007. Notice the dramatic drop in the price and PE ratio that correspond to the fall in the market that begin at the end of February 2007.

Peratio2

According to various experts the PE ratio has averaged around 15 for the last 100 years. Of course it has moved above and below this level over time. 

Robert Shiller, author of Irrational Exuberance: Second Edition , uses "real price" and "real earnings" to derive his PE ratio. He has an extensive web site with an excel file of his data that is up dated periodically. The chart below for the S&P 500 PE ratio is from this site. Part of his methodology is to use averages over time to calculate the values. This tends to slow the movement of the PE ratio which partly explains why the chart below shows a higher PE ratio for the S&P 500. Also the latest data is for August 2006.

Another way to get an estimate of the PE ratio use exchange-traded funds (ETF), which closely follows the index. This measure will not be as exact as the index's own measure, due to the fees charged by the ETF. Also the ETF is traded on the market so there will be slight variation in the value as well. However, these should be only slight variation, so the PE ratio should follow very closely to the ratio for the underlying index. The biggest benefit is the information is a lot easier to find.

The table below is for some of the popular index based ETFs. 

Index ETF Ticker
S&P 500 SPDRs SPY
DJIA Diamonds Trust I DIA
NASDAQ 100 NASDAQ 100 Trust QQQQ
Russell 2000 iShares Russell 2000 IWM
Wilshire 5000 Total Stock Market VIPERS VTI
Charting the PE Ratio

There is a way to get the PE ratio included on one chart tool that is available to anyone with internet access. Go to BigCharts . Enter your symbol in the field at the top left and click on the Interactive Chart button. Under Chart Options adjust the time period you want to see. Then under Lower Indicators chose the PE Ratio. For example this works for the S&P 500 as shown below.

The Bottom Line

In summary the PE ratio is a useful tool to help understand the potential value of a stock or the overall market. It is particularly useful to see the PE ratio displayed over time in chart format. When an investor is trying to decide if the market is fairly valued a chart showing the PE ratio over time is a useful tool. However, it is difficult to find ways to plot the PE ratio over time. This article provided some further background on how to find and the plot the PE ratio for various indexes. As with any tool it should be used in conjunction with others to help make an investment decision. 

By Hans Wagner
tradingonlinemarkets.com

My Name is Hans Wagner and as a long time investor, I was fortunate to retire at 55. I believe you can employ simple investment principles to find and evaluate companies before committing one's hard earned money. Recently, after my children and their friends graduated from college, I found my self helping them to learn about the stock market and investing in stocks. As a result I created a website that provides a growing set of information on many investing topics along with sample portfolios that consistently beat the market at http://www.tradingonlinemarkets.com/

Hans Wagner Archive

© 2005-2019 http://www.MarketOracle.co.uk - The Market Oracle is a FREE Daily Financial Markets Analysis & Forecasting online publication.


Comments

John Boyd
10 Mar 09, 13:40
price earning ratio

I noticed in Daily telegraph 10.3.2009 that the P/E ratio for Barclays Bank is posted as 1.1. However, when one checks the share price, 62p, against the yield it works out at 5.6. why is this?


Nadeem_Walayat
10 Mar 09, 15:51
Price Earnings

Your confusing earnings with dividends.

Dividend / Price = Yield

Price / Earnings = is the ratio between the share price and earnings per share.

Earnings is profits a company makes after taxes, part of which it can chose to pay out as a dividend or reinvest or like microsoft and google leave in the bank.


FL Fin & Ins
25 Mar 09, 13:26
PE ratio discussion

Excellent answer, Nadeem, but may I mention a common grammatical error & a way to avoid it? Your is possessive as in yours or mine. You're means 'you are' which is what you meant to say. To avoid in the future sound out 'you are' & if that fits use 'you're' - otherwise use your.


Post Comment

Only logged in users are allowed to post comments. Register/ Log in

6 Critical Money Making Rules