• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Investor March Madness: We’re wired for blunders, but can improve odds

Geoff Colvin
By
Geoff Colvin
Geoff Colvin
Senior Editor-at-Large
Down Arrow Button Icon
Geoff Colvin
By
Geoff Colvin
Geoff Colvin
Senior Editor-at-Large
Down Arrow Button Icon
February 27, 2014, 12:12 PM ET

Time now to observe two of the most solemn anniversaries in the investor’s calendar. March 9 marks five years since the Dow plunged to its lowest point of the past 17 years, in the dismal pit of the financial crisis. March 10 is 14 years since Nasdaq levitated to its all-time high in the sparkling delirium of the Internet bubble. It seems March Madness happens on Wall Street too.

The anniversaries are solemn because they mark the two days of the past 50 years when we investors most urgently should have taken action, and of course hardly any of us did. On March 9, 2009, we all should have broken our kids’ piggy banks and bought pretty much anything. GE was $7 (recent price: $26); J.P. Morgan Chase was $16 (recently $58); an S&P index fund is up 170%. And on March 10, 2000, we should have sold or shorted every technology stock on the planet. Even a major player like Cisco had doubled in the prior six months, and it then lost 80% of its value the following year; lesser companies went to zero.

Not that we had to bet the farm on those exact days. Just coming close with some modest portion of our investments could have yielded spectacular results. Yet we didn’t. So why not?

The answer is not mysterious. The findings of behavioral finance reveal how we’re hardwired to make these blunders and why avoiding them requires nearly superhuman discipline. Over the eons we’ve evolved four tendencies that conspire to sabotage our investing decisions at critical moments:

About the Author
Geoff Colvin
By Geoff ColvinSenior Editor-at-Large
LinkedIn iconTwitter icon

Geoff Colvin is a senior editor-at-large at Fortune, covering leadership, globalization, wealth creation, the infotech revolution, and related issues.

See full bioRight Arrow Button Icon

Latest in

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in

Tim Cook reveals the advice he gave Apple’s next CEO: The most important decision he’ll make is ‘where he spends his time’
Big TechApple
Tim Cook reveals the advice he gave Apple’s next CEO: The most important decision he’ll make is ‘where he spends his time’
By Alexei OreskovicApril 30, 2026
5 hours ago
Meta’s threat to quit New Mexico ‘is showing the world how little it cares about child safety,’ AG says
LawMeta
Meta’s threat to quit New Mexico ‘is showing the world how little it cares about child safety,’ AG says
By Catherina GioinoApril 30, 2026
8 hours ago
Moreno gestures with his hand
PoliticsU.S. Senate
A ‘no-brainer’: Senate unanimously bans members and staff from using prediction markets
By Mary Clare Jalonick and The Associated PressApril 30, 2026
9 hours ago
Kevin Warsh, nominee for chairman of the Federal Reserve.
BankingFederal Reserve
Former Fed economist raises alarm on Warsh after historically partisan vote: ‘this is not normal is going to be a theme’
By Eva RoytburgApril 30, 2026
9 hours ago
Landry speaks a podium wearing a white cowboy hat.
PoliticsSupreme Court
Two days before early voting starts, Louisiana suspends its congressional primaries after SCOTUS knocks majority-minority districts
By Sara Cline, Jack Brook, David A. Lieb and The Associated PressApril 30, 2026
9 hours ago
A banner depicting portraits of Iran's late Supreme Leader Ayatollah Ali Khamenei and Ayatollah Mojtaba Khamenei
PoliticsIran
Iranian supreme leader says the only place Americans belong in the Gulf is ‘at the bottom of its waters’
By Jon Gambrell, Aamer Madhani and The Associated PressApril 30, 2026
9 hours ago

Most Popular

Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
Success
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
By Preston ForeApril 27, 2026
4 days ago
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
Big Tech
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
By Alexei OreskovicApril 29, 2026
1 day ago
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
North America
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
By Jake AngeloApril 30, 2026
12 hours ago
With no end in sight, Trump considers new options in Iran war—including the ‘Dark Eagle’ hypersonic missile
Big Tech
With no end in sight, Trump considers new options in Iran war—including the ‘Dark Eagle’ hypersonic missile
By Jim EdwardsApril 30, 2026
20 hours ago
‘The cost of compute is far beyond the costs of the employees’: Nvidia executive says right now AI is more expensive than paying human workers
AI
‘The cost of compute is far beyond the costs of the employees’: Nvidia executive says right now AI is more expensive than paying human workers
By Sasha RogelbergApril 28, 2026
3 days ago
No, tariffs are not strengthening the economy
Commentary
No, tariffs are not strengthening the economy
By Alex DuranteApril 29, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.