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

Trendingnow

1

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises

2

Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that

3

Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers

1

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises

2

Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that

3

Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers
EconomyIran

Wall Street is ‘bewitched’ by positive news on Iran, says UBS, and investors want to believe the war is over without verifiable information

Eleanor Pringle
By
Eleanor Pringle
Eleanor Pringle
Senior Reporter, Economics and Markets
Down Arrow Button Icon
Eleanor Pringle
By
Eleanor Pringle
Eleanor Pringle
Senior Reporter, Economics and Markets
Down Arrow Button Icon
March 24, 2026, 7:49 AM ET
United States President Donald Trump walks toward the White House upon his arrival in Washington, DC, from Memphis, Tennessee, United States, on March 23, 2026.
United States President Donald Trump walks toward the White House upon his arrival in Washington, DC, from Memphis, Tennessee, United States, on March 23, 2026. Celal Gunes/Anadolu - Getty Images

If yesterday’s five-minute relief rally taught analysts one thing, it’s that traders are keen to jump on the optimistic bandwagon when it comes to Iran. After weeks of volatile trade, yesterday Wall Street celebrated after President Trump indicated he was working toward a “complete and total” resolution of hostilities with Iran.

There’s one small issue: While Trump said there was “productive” conversations with Iranian leaders, Tehran reportedly maintained that “no dialogue” has occurred between the two nations. There are talks between intermediaries in Riyadh, but it’s not clear how far along they are, or how willing either side is to compromise.

Wall Street, however, has adopted a new behavioural trait since Trump returned to office: Investors are reacting (justifiably or not) to social media posts from the Oval Office without much verifiable evidence to go on.

Recommended Video

Wall Street’s early optimism that the war in Iran would resolve relatively quickly means they are more inclined to act on positive updates from the commander in chief, according to UBS’s chief economist Paul Donovan.

He noted to clients this morning: “Markets are not reacting to information, they are generally reacting to social media posts and headlines—even if those posts or headlines are fake news or contradictory. The absence of verifiable facts is already complicating economic assessments, for instance, it is difficult to assess how much Dubai might have to spend repairing war damage, when there is little verifiable information about the extent of war damage.”

Wall Street has come to expect (indeed, sometimes bank on) rapid updates and changes in foreign policy under President Trump, often shared on social media rather than through more traditional channels. Trump’s social media posts have covered everything from tariff threats on trading partners and calling out specific businesses, through to criticism of the Federal Reserve chairman Jerome Powell.

The rapidity of these updates, and often the ensuing reverse ferret, has earned a nickname: TACO (Trump Always Chickens Out). The updates from the president on Monday, some have speculated, may the latest example of a TACO.

While it could be argued that Trump’s social media posts, above all others, should be monitored by investors, Donovan highlights that this should not obscure factual information. He added: “There is now a risk that investors will start looking for leading indicators of social media posts, rather than leading indicators of actual indications.”

Confirmation bias

There’s a further issue: Traders want the war in Iran to be over. When the U.S. and Israel launched strikes on Iran, Trump said the action would only last for a matter of weeks, and this is the baseline many economists and analysts have stuck with.

Donovan argues that for this reason, markets are “bewitched” by good news, and so are more inclined (such as yesterday) to act: In a matter of moments yesterday, oil sunk below the $100 threshold and was down 15% while equities added $1.7 trillion in value (much of this promptly unwound when Iran denied the talks).

“Investors are also perhaps influenced by loss aversion and confirmation bias,” added Donovan. “Investors want the war to end, there’s an irrational bias in favor of rising markets. If there is a story that seems to confirm that desire, investors are more likely to react to it. This does not mean that negative stories will be ignored … for now, markets do seem to be content to trade strongly on stories but to provoke an equal negative reaction would probably need more hard evidence of adverse developments.”

Deutsche Bank’s Jim Reid echoed that markets will now be looking for follow-through from Trump 2.0, writing this morning: “Obviously, much now depends on the progress of any talks, and whether the more optimistic rhetoric is followed up by concrete action.”

Subscribe to Fortune Gulf Brief. Every Tuesday, this new newsletter will deliver clear-eyed, authoritative intelligence on the deals, decisions, policies, and power shifts shaping one of the world’s most consequential regions, written for the people who need to act on it. Sign up here.
About the Author
Eleanor Pringle
By Eleanor PringleSenior Reporter, Economics and Markets
LinkedIn icon

Eleanor Pringle is an award-winning senior reporter at Fortune covering news, the economy, and personal finance. Eleanor previously worked as a business correspondent and news editor in regional news in the U.K. She completed her journalism training with the Press Association after earning a degree from the University of East Anglia.

See full bioRight Arrow Button Icon

Latest in Economy

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 Economy

America’s productivity boom started before AI, and a Stanford economist who decoded the Great Resignation says working from home is the reason why
Future of Workremote work
America’s productivity boom started before AI, and a Stanford economist who decoded the Great Resignation says working from home is the reason why
By Marco Quiroz-GutierrezMay 15, 2026
12 hours ago
deep-sea mining equipment
EnvironmentChina
China dominates the minerals that power AI. But one company claims there’s enough supply on the ocean floor to last for hundreds of years
By Jake AngeloMay 15, 2026
15 hours ago
Demand for longer-term U.S. debt gets weaker as one shock after another stokes fear that high inflation is here to stay
EconomyDebt
Demand for longer-term U.S. debt gets weaker as one shock after another stokes fear that high inflation is here to stay
By Jason MaMay 15, 2026
15 hours ago
Kevin Warsh, U.S. President Donald Trump's nominee for Chair of the Federal Reserve, is sworn in to testify during his Senate Committee on Banking, Housing, and Urban Affairs confirmation hearing in the Dirksen Senate Office Building on April 21, 2026 in Washington, DC.
EconomyFed interest rates
Dominoes are steadily falling in the path of the rate cuts Trump wants to see from Kevin Warsh
By Eleanor PringleMay 15, 2026
16 hours ago
lebanon
EconomyIran
Lebanon’s economy minister on the ‘existential nature’ of the Iran War shock: companies closing, people losing jobs, no tourism
By Malak Harb, Kareem Chehayeb and The Associated PressMay 15, 2026
18 hours ago
Current price of oil as of May 15, 2026
Personal FinanceOil
Current price of oil as of May 15, 2026
By Joseph HostetlerMay 15, 2026
19 hours ago

Most Popular

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
Politics
The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
By Jake AngeloMay 12, 2026
4 days ago
Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that
Success
Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that
By Preston ForeMay 13, 2026
3 days ago
Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers
Travel & Leisure
Nearly 50,000 Lake Tahoe residents have to find a new power source after their energy source looks to redirect lines to data centers
By Catherina GioinoMay 12, 2026
4 days ago
The airplane fuel shortage is a myth propagated by airlines who want to cancel unprofitable flights, says private jet CEO
Energy
The airplane fuel shortage is a myth propagated by airlines who want to cancel unprofitable flights, says private jet CEO
By Jim EdwardsMay 14, 2026
2 days ago
Current price of oil as of May 15, 2026
Personal Finance
Current price of oil as of May 15, 2026
By Joseph HostetlerMay 15, 2026
19 hours ago
Top economist says $39 trillion national debt leaves government worse prepared for recession than ever
Economy
Top economist says $39 trillion national debt leaves government worse prepared for recession than ever
By Eva RoytburgMay 14, 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.