Unexpectedly Intriguing!
14 July 2021

Compared to the period from 1950 through 1980, the S&P 500 (Index: SPX) of the last four decades experiences notably fewer long losing streaks. But during the last twenty years, those losing streaks have become substantially deeper.

We've calculated the smallest, largest, median and mean declines the S&P 500 experience during its longest losing streaks of six trading days or longer in duration beginning in the periods of 1950 through 1980, 1981 through 2000, and 2001 through this point of 2021. That information is visualized in the following chart:

Magnitude of Declines in the S&P 500 During Its Longest Losing Streaks, 3 January 1950 - 2 July 2021

The median and mean decline of the index' value is roughly similar in the periods for 1950-1980 and 1981-2000, although the number of losing streaks declined. But since 2000, while the number of long losing streaks has continued to fall, the magnitude of the associated decline of stock prices has become much larger when they have occurred.

Previously on Political Calculations

Labels: ,

About Political Calculations

Welcome to the blogosphere's toolchest! Here, unlike other blogs dedicated to analyzing current events, we create easy-to-use, simple tools to do the math related to them so you can get in on the action too! If you would like to learn more about these tools, or if you would like to contribute ideas to develop for this blog, please e-mail us at:

ironman at politicalcalculations.com

Thanks in advance!

Recent Posts

Stock Charts and News

Most Popular Posts
Quick Index

Site Data

This site is primarily powered by:

This page is powered by Blogger. Isn't yours?

CSS Validation

Valid CSS!

RSS Site Feed

AddThis Feed Button


The tools on this site are built using JavaScript. If you would like to learn more, one of the best free resources on the web is available at W3Schools.com.

Other Cool Resources

Blog Roll

Market Links

Useful Election Data
Charities We Support
Shopping Guides
Recommended Reading
Recently Shopped

Seeking Alpha Certified

Legal Disclaimer

Materials on this website are published by Political Calculations to provide visitors with free information and insights regarding the incentives created by the laws and policies described. However, this website is not designed for the purpose of providing legal, medical or financial advice to individuals. Visitors should not rely upon information on this website as a substitute for personal legal, medical or financial advice. While we make every effort to provide accurate website information, laws can change and inaccuracies happen despite our best efforts. If you have an individual problem, you should seek advice from a licensed professional in your state, i.e., by a competent authority with specialized knowledge who can apply it to the particular circumstances of your case.