What is a high index PE?

Published: July 14, 2016 at 10:26 am

Last Updated on December 18, 2021 at 10:33 pm

When the markets start to move for a few days, investors tend to look at the index PE to check if the market is overvalued or not. Before we caution ourselves (and others) about ‘high PE’ levels, it would be quite instructive to pause and think about the historical evolution of the index PE .

Before we ask, what a high index PE is, we should be asking, what factors affect the PE of an index?

These are quite obvious, but it makes a difference to stop and think about it.

1. Each sector has its own definition of high and low PE.

2. Indices like the Sensex and the Nifty consist of stocks from different sectors. So the index PE is ‘some kind of’ weighted average of the sector PEs.

3. An index is only as good as its stocks. If there are marked changes in the composition of the index, the definitions of high and low PE will also change. On Aug  19th 1996, half the composition of the Sensex was changed in one-shot. This implies what a ‘high PE’ was up until then had to be thrown out of the window in one shot. (vertical line in the graph below).

Sensex-PE

4. Change is the only constant. Blue chips in the 80s found the going tough as liberalisation set in. Then came the rapid growth of the software giants, pharma companies and FMCGs. The composition of the Sensex has been changing over time. The future will be no different.

5. On April 20, 2000, Satyam Computer, Zee Telefims, Dr. Reddy’s Labs, and Reliance Petroleum replaced Indian Hotels, Tata Power, Tata Chemicals and IDBI. The PE shot up by 10 points immediately! (arrow above)

6. Now consider major events which led to sharp downturns: The Harshad Mehta Scandal – 23 April 1992. The dot-com crash in 2000, the sup-prime crisis in 2008. These were specific events which had nothing to do with market valuations. They could have occurred at any PE. If they had not occurred, or not occurred when they did,  we will never  know how high the market would have gone up.

7. I can think of at least two instances (green circles above) when the market came down from ‘high PE’ due to no specific event. Even here, the high PE in each case was different.

Some things to ponder

  1. Markets need not crash because the PE is ‘high’.
  2. Markets can crash at any time, for any number of reasons.
  3. The markets can hover around a ‘high’ PE for months, moving up and down.

Before you wish to adopt a PE-based investing strategy, I would invite you to read,

Relevance of the Nifty PE for the long-term investor

Misconceptions about the Nifty PE

Stare at the “long-term” moving averages of PE and other metrics using the

Nifty Valuation Analyzer: PE, PE, Div Yield, ROE, EPS Growth Rate

Ps. the NSE indices are toddlers. So don’t take these numbers too serious.

Conclusion: I repeat, change is the only constant. When the ground is shifting beneath our feet, it would be wise not to hang onto to rules based on past data about what is ‘high’ and what is ‘low’

Reference: Making sense of the Sensex

Do share this article with your friends using the buttons below.

🔥Enjoy massive discounts on our courses, robo-advisory tool and exclusive investor circle! 🔥& join our community of 7000+ users!
Use our Robo-advisory Tool for a start-to-finish financial plan! More than 2,500 investors and advisors use this!
Track your mutual funds and stock investments with this Google Sheet!
We also publish monthly equity mutual funds, debt and hybrid mutual funds, index funds and ETF screeners and momentum, low-volatility stock screeners.
Follow Freefincal on Google News
Follow Freefincal on Google News
Subscribe to the freefincal Youtube Channel. Subscribe button courtesy: Vecteezy.
Subscribe to the freefincal Youtube Channel.
Follow freefincal on WhatsApp Channel
Follow freefincal on WhatsApp
Podcast: Let's Get RICH With PATTU! Every single Indian CAN grow their wealth! 
Listen to the Lets Get Rich with Pattu Podcast
Listen to the Let's Get Rich with Pattu Podcast
You can watch podcast episodes on the OfSpin Media Friends YouTube Channel.
Lets Get RICH With PATTU podcast on YouTube
Let's Get RICH With PATTU podcast on YouTube.
🔥Now Watch Let's Get Rich With Pattu தமிழில் (in Tamil)! 🔥
  • Do you have a comment about the above article? Reach out to us on Twitter: @freefincal or @pattufreefincal
  • Have a question? Subscribe to our newsletter using the form below.
  • Hit 'reply' to any email from us! We do not offer personalized investment advice. We can write a detailed article without mentioning your name if you have a generic question.

Join 32,000+ readers and get free money management solutions delivered to your inbox! Subscribe to get posts via email! (Link takes you to our email sign-up form)


About The Author

Pattabiraman editor freefincalDr M. Pattabiraman(PhD) is the founder, managing editor and primary author of freefincal. He is an associate professor at the Indian Institute of Technology, Madras. He has over ten years of experience publishing news analysis, research and financial product development. Connect with him via Twitter(X), Linkedin, or YouTube. Pattabiraman has co-authored three print books: (1) You can be rich too with goal-based investing (CNBC TV18) for DIY investors. (2) Gamechanger for young earners. (3) Chinchu Gets a Superpower! for kids. He has also written seven other free e-books on various money management topics. He is a patron and co-founder of “Fee-only India,” an organisation promoting unbiased, commission-free investment advice.
Our flagship course! Learn to manage your portfolio like a pro to achieve your goals regardless of market conditions! More than 3,000 investors and advisors are part of our exclusive community! Get clarity on how to plan for your goals and achieve the necessary corpus no matter the market condition is!! Watch the first lecture for free!  One-time payment! No recurring fees! Life-long access to videos! Reduce fear, uncertainty and doubt while investing! Learn how to plan for your goals before and after retirement with confidence.
Our new course!  Increase your income by getting people to pay for your skills! More than 700 salaried employees, entrepreneurs and financial advisors are part of our exclusive community! Learn how to get people to pay for your skills! Whether you are a professional or small business owner who wants more clients via online visibility or a salaried person wanting a side income or passive income, we will show you how to achieve this by showcasing your skills and building a community that trusts and pays you! (watch 1st lecture for free). One-time payment! No recurring fees! Life-long access to videos!   
Our new book for kids: “Chinchu Gets a Superpower!” is now available!
Both boy and girl version covers of Chinchu gets a superpower
Both the boy and girl-version covers of "Chinchu Gets a superpower".
Most investor problems can be traced to a lack of informed decision-making. We made bad decisions and money mistakes when we started earning and spent years undoing these mistakes. Why should our children go through the same pain? What is this book about? As parents, what would it be if we had to groom one ability in our children that is key not only to money management and investing but to any aspect of life? My answer: Sound Decision Making. So, in this book, we meet Chinchu, who is about to turn 10. What he wants for his birthday and how his parents plan for it, as well as teaching him several key ideas of decision-making and money management, is the narrative. What readers say!
Feedback from a young reader after reading Chinchu gets a Superpower (small version)
Feedback from a young reader after reading Chinchu gets a Superpower!
Must-read book even for adults! This is something that every parent should teach their kids right from their young age. The importance of money management and decision making based on their wants and needs. Very nicely written in simple terms. - Arun.
Buy the book: Chinchu gets a superpower for your child!
How to profit from content writing: Our new ebook is for those interested in getting side income via content writing. It is available at a 50% discount for Rs. 500 only!
Do you want to check if the market is overvalued or undervalued? Use our market valuation tool (it will work with any index!), or get the Tactical Buy/Sell timing tool!
We publish monthly mutual fund screeners and momentum, low-volatility stock screeners.
About freefincal & its content policy. Freefincal is a News Media Organization dedicated to providing original analysis, reports, reviews and insights on mutual funds, stocks, investing, retirement and personal finance developments. We do so without conflict of interest and bias. Follow us on Google News. Freefincal serves more than three million readers a year (5 million page views) with articles based only on factual information and detailed analysis by its authors. All statements made will be verified with credible and knowledgeable sources before publication. Freefincal does not publish paid articles, promotions, PR, satire or opinions without data. All opinions will be inferences backed by verifiable, reproducible evidence/data. Contact information: letters {at} freefincal {dot} com (sponsored posts or paid collaborations will not be entertained)
Connect with us on social media
Our publications

You Can Be Rich Too with Goal-Based Investing

You can be rich too with goal based investingPublished by CNBC TV18, this book is meant to help you ask the right questions and seek the correct answers, and since it comes with nine online calculators, you can also create custom solutions for your lifestyle! Get it now.
Gamechanger: Forget Startups, Join Corporate & Still Live the Rich Life You Want Gamechanger: Forget Start-ups, Join Corporate and Still Live the Rich Life you wantThis book is meant for young earners to get their basics right from day one! It will also help you travel to exotic places at a low cost! Get it or gift it to a young earner.

Your Ultimate Guide to Travel

Travel-Training-Kit-Cover-new This is an in-depth dive into vacation planning, finding cheap flights, budget accommodation, what to do when travelling, and how travelling slowly is better financially and psychologically, with links to the web pages and hand-holding at every step. Get the pdf for Rs 300 (instant download)