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Photo of Jason Ma
Photo of Jason Ma
Jason Ma

Jason Ma is the weekend editor at Fortune, where he covers markets, the economy, finance and housing. Before joining Fortune, he was an editor at Business Insider, Investor’s Business Daily, and Dow Jones Newswires. He also took time off from journalism to serve in the Marine Corps. He is a graduate of the University of Southern California and UC Berkeley.

Trump backed down from NATO tariffs over Greenland but may cross a ‘red line’ on U.S. military bases there
Europe
Trump backed down from NATO tariffs over Greenland but may cross a ‘red line’ on U.S. military bases there
By Jason MaJanuary 24, 2026
Days after saying ‘it’s a good thing’ for Mark Carney to sign a trade deal with China, Trump vows a 100% tariff on Canada for doing so
Economy
Days after saying ‘it’s a good thing’ for Mark Carney to sign a trade deal with China, Trump vows a 100% tariff on Canada for doing so
By Jason MaJanuary 24, 2026
The U.S. has ‘escalation dominance’ in a debt war: Europe would face a violent market crash if it dumps Treasuries
Economy
The U.S. has ‘escalation dominance’ in a debt war: Europe would face a violent market crash if it dumps Treasuries
By Jason MaJanuary 23, 2026
NATO vs. ‘TACO’ trade: Dow futures tumble 400 points on Trump’s latest tariffs while Wall Street hopes for de-escalation at Davos
Economy
NATO vs. ‘TACO’ trade: Dow futures tumble 400 points on Trump’s latest tariffs while Wall Street hopes for de-escalation at Davos
By Jason MaJanuary 19, 2026
Dollar sinks as Trump’s new tariffs raise fears about U.S. debt and reserve currency status. ‘When it’s lost, economic collapse will follow’
Economy
Dollar sinks as Trump’s new tariffs raise fears about U.S. debt and reserve currency status. ‘When it’s lost, economic collapse will follow’
By Jason MaJanuary 18, 2026
Moscow cheers NATO crisis as the Ukraine war stifles Russia’s economy, forcing companies to use 4-day weeks and lay off workers
Politics
Moscow cheers NATO crisis as the Ukraine war stifles Russia’s economy, forcing companies to use 4-day weeks and lay off workers
By Jason MaJanuary 18, 2026
Europe can wield this $8 trillion ‘sell America’ weapon as Trump reignites a trade war over his Greenland conquest ambitions
Economy
Europe can wield this $8 trillion ‘sell America’ weapon as Trump reignites a trade war over his Greenland conquest ambitions
By Jason MaJanuary 18, 2026
The EU could fire a never-before-used ‘trade bazooka’ to retaliate against Trump tariffs aimed at NATO allies sending troops to Greenland
Politics
The EU could fire a never-before-used ‘trade bazooka’ to retaliate against Trump tariffs aimed at NATO allies sending troops to Greenland
By Jason MaJanuary 18, 2026
The creator economy may be bigger than we think, and taxing side hustles will be a growing issue as an OnlyFans ‘sin tax’ is debated
Economy
The creator economy may be bigger than we think, and taxing side hustles will be a growing issue as an OnlyFans ‘sin tax’ is debated
By Jason MaJanuary 17, 2026
Just when Wall Street and Corporate America were looking forward to a year without trade fears, the ‘Tariff King’ strikes again
Economy
Just when Wall Street and Corporate America were looking forward to a year without trade fears, the ‘Tariff King’ strikes again
By Jason MaJanuary 17, 2026
Trump launches trade war against NATO after European countries sent troops to Greenland amid his takeover plan
Europe
Trump launches trade war against NATO after European countries sent troops to Greenland amid his takeover plan
By Jason MaJanuary 17, 2026
Deficits boost U.S. debt but also inflate corporate profits and stocks, so reducing red ink could trigger a financial crisis, analysts warn
Economy
Deficits boost U.S. debt but also inflate corporate profits and stocks, so reducing red ink could trigger a financial crisis, analysts warn
By Jason MaJanuary 16, 2026
As billionaires debate California’s wealth tax, a tech investor suggests other ways to raise revenue that target a huge loophole the rich exploit
Startups & Venture
As billionaires debate California’s wealth tax, a tech investor suggests other ways to raise revenue that target a huge loophole the rich exploit
By Jason MaJanuary 13, 2026
‘Godfather of AI’ says the technology will create massive unemployment and send profits soaring — ‘that is the capitalist system’
AI
‘Godfather of AI’ says the technology will create massive unemployment and send profits soaring — ‘that is the capitalist system’
By Jason MaJanuary 12, 2026
The FOMC has the power to pick its own chair and could keep Powell—unless the DOJ probe and Supreme Court let Trump oust him from the Fed
Economy
The FOMC has the power to pick its own chair and could keep Powell—unless the DOJ probe and Supreme Court let Trump oust him from the Fed
By Jason MaJanuary 12, 2026
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Success
Billionaire Home Depot cofounder Bernie Marcus' foundation donates nearly $30 million toward stem cell research for heart attacksplaceholder alt text
By Sydney LakeAugust 14, 2026
Middle East
Iran business leader admits U.S. blockade will inflict more economic damage than war, and the 'worst thing that could happen' is trying to evade itplaceholder alt text
By Jason MaAugust 15, 2026
Success
$38 billion Twilio CEO wakes at 4:30 a.m., works Sundays, and runs laps around his house between meetings to blow off steamplaceholder alt text
By Orianna Rosa RoyleAugust 15, 2026
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