Which commodity is the U.S. accusing Canada of dumping? Take our business and investing news quiz for the week ending Sept. 26

c. Artificial intelligence. Constellation Software Inc. held a rare conference call to answer investors’ questions about the impact of AI on its business. Constellation has a stellar track record as a serial acquirer of software companies in niche sectors, but its share price has slid in recent weeks because of worries that AI may undermine its business model.

b. Transfers of RRSP and TFSAs from one financial institution to another. Online brokers such as Wealthsimple and Questrade want Ottawa to set standards for transferring such accounts between financial institutions. Transfer fees, also known as exit fees, for registered accounts have roughly doubled since the 2010s, with many banks and investment dealers now charging $150 per account, Wealthsimple said in a recent federal budget submission.

d. Climate change. In an odd and combative speech lasting nearly an hour, Mr. Trump described the scientific consensus on climate change as a “con job.” He also said European countries were “going to hell” because of migration and accused countries such as Canada of giving a “reward” to Hamas by recognizing a Palestinian state.

a. Argentina. The U.S. president has stopped short of promising a full bailout for the country, but he is rushing to support President Javier Milei, a close ally of his who won office in 2023 with promises to slash government spending, cut red tape and throttle inflation. Mr. Milei’s austerity measures and libertarian policies have failed to bring prosperity to Argentina and he is now facing a growing wave of popular discontent.

d. A proposed wealth tax. Mr. Arnault, the founder of luxury behemoth LVMH, has come out swinging against France’s proposed wealth tax, saying it would kill the French economy. Mr. Arnault, who has a net worth of more than US$150-billion, would be a prime target of the proposed tax, which would require the superwealthy to pay at least 2 per cent of their wealth every year.

c. US$100-billion. Nvidia agreed to invest up to US$100-billion into OpenAI at the same time it plans to supply millions of its market-leading artificial intelligence chips to the ChatGPT creator. The mammoth deal has little precedent in the tech industry.

a. Mushrooms. The U.S. International Trade Commission launched an anti-dumping investigation after U.S. fungi producers alleged that Canadian imports are undercutting them because of big subsidies. The Canadian mushroom industry denies the claim and says its growing exports to the U.S. simply reflect its investment in modernized facilities and new technology.

b. It flatlined. Canada’s population barely grew in the second quarter, continuing a trend of near-zero growth as Ottawa moves to curb immigration. Outflows of non-permanent residents were a major factor behind the slow growth.

a. “Fairly highly valued.” Interpret Mr. Powell’s comment as you will. Wall Street’s big gains in recent months have fed concerns that the market has gone too far, too fast and is now overvalued.

c. Reports the Trump administration wants a piece of the business. U.S.-listed shares of Lithium Americas jumped after reports that the Trump administration is seeking up to a 10 per cent stake in the miner. Washington has recently been intervening in industries it considers critical to national security.