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Know how the economy works? Find out by taking my weekly Konomy Quiz. I post sources for anybody who wants to learn more and encourage feedback and discussion. If you're mean, go somewhere else!

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Ever heard a US president brag about boosting stock values? Ha, almost all of them do it from time to time. Some more than others. Who was better for the stock market, President Donald Trump or President Joe Biden? Take the Konomy Quiz to find out. Eleven questions. Go!





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Yahoo Finance has great tools for analyzing stock price history.


Little known-fact: Each of the 11 S&P industry sectors has a ticker symbol allowing you to research historical performance. Here's a cheat sheet:


Communications: ^SP500-50

Consumer discretionary: ^SP500-25

Consumer staples: ^SP500-30

Energy: ^SP500-10

Financials: ^SP500-40

Health care: ^HCX

Industrials: ^SP500-20

Information technology: ^SP500-45

Materials: ^SP500-15Real estate: ^SP500-60

Utilities: ^SP500-55Full S&P 500 index: ^SPX


The hemline index is an old-timer thing that's probably a bogus theory.


And yeah, ironic that oil and gas firms performed way better under Biden, financially, than they did during Trump's first term. Drill baby .... ?


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President Trump says the US trade deficit is too high because the country imports too much stuff. His tariffs are a tax on imports that are meant to encourage more domestic production by making imports more expensive. Is he right? Do we import too much? Find about by taking the quiz. Eleven questions. Go!




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Here's the list of countries that export the most services. Ireland is high on the list because it's a tax haven for software and other types of intellectual property, which count as services.


Why is Trump so fixated on goods rather than services? Your guess is as good as mine.



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  • Writer: Rick Newman
    Rick Newman
  • May 28

Love him or loathe him, it's hard to escape Elon Musk. How much do you know about the world's richest man who is not Vladimir Putin? Take the quiz and find out. Nine questions. Go!




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Bloomberg and Forbes track billionaire wealth. I used the Bloomberg data for Elon Musk and Donald Trump.


Yahoo Finance has detailed info on Tesla's ownership and financials. Same with General Motors and every other public company.


The value of private companies such as SpaceX and Twitter is sometimes hard to divine. The value of SpaceX comes from a secondary sale of privately owned shares late in 2024. The value of X is up for debate.


Tesla's stock fell sharply as Musk took over Trump's DOGE commission early in 2024 and startled dismantling many government agencies. When Musk said he was retreating from DOGE in late April and returning to his companies full-time, Tesla's stock rose. Go figure.


Here's Neuralink's mission. Musk does want to colonize Mars, but building golf courses in an environment with no breathable air and average temperatures of around - 80°F would be difficult. Musk may want to take control of the IRS but he hasn't said so publicly. As for a presidential run, Musk's seems to have grown disillusioned with American politics.



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