Markets waver, fall again as U.S. tariffs against Canada, Mexico go into effect
Markets closed with broad losses Tuesday after volatile trading day
Stocks racked up more losses on Wall Street Tuesday as a trade war between the U.S. and its key trading partners escalated, with a brief bounce-back in technology stocks failing to reverse overall losses amid shaky global markets.
Just after midnight, the U.S. imposed tariffs on imports from Canada and Mexico, and doubled tariffs against imports from China, sparking retaliatory actions from all three countries and inflaming concerns about a slowdown in the global economy.
Canada's main stock index dropped nearly 500 points in early trading, and was still down 429.57 points when markets closed.
A bounce-back in technology stocks helped U.S. markets regain some ground by midday Tuesday, but weren't enough to stop the markets from falling again.
The S&P 500 was down 1.2 per cent on Tuesday, with the majority of sectors in the benchmark index losing ground.
The Dow Jones industrial average, one of the biggest indicators of the health of the U.S. economy, was down 670 points, or 1.6 per cent, as of closing.
The Nasdaq composite — which first dropped sharply, then rose due to a rebound in big stocks such as Nvidia — ended the day with a loss of 0.4 per cent. The tech-heavy index briefly reached a 10 per cent decline from its most recent closing high, which is what the market considers a correction, before paring its losses.
Markets in Europe fell sharply, with Germany's DAX falling 3.55 as automakers saw sharp losses. Stocks in Asia saw more modest declines.
The recent declines in U.S. stocks has nearly wiped out all of the markets' gains since U.S. President Donald Trump's election in November — gains that were built largely on hopes for policies from Trump that would strengthen the U.S. economy.
Worries about tariffs raising consumer prices and reigniting inflation have been weighing on both the economy and Wall Street.
Under the new tariffs, which came into effect on Tuesday, imports from Canada and Mexico are now to be taxed at 25 per cent, with Canadian energy products subject to 10 per cent import duties. The 10 per cent tariff that Trump placed on Chinese imports in February was doubled to 20 per cent.
Retaliations were swift.
Canada has already slapped tariffs on $30 billion worth of American goods, and has promised to introduce tariffs on $125 billion more in three weeks' time. Prime Minister Justin Trudeau, citing a Wall Street Journal editorial, called Trump's targeting of Canada a "very dumb" move, adding that more non-tariff measures are coming if Trump doesn't back down.
China responded to new U.S. tariffs by announcing it will impose additional tariffs of up to 15 per cent on imports of key U.S. farm products, including chicken, pork, soy and beef, and expanded controls on doing business with key U.S. companies. Mexico is also planning tariffs on goods imported from the U.S.
Dollar rattled
The U.S. dollar index hit its lowest level since Dec. 6, 2024, on Tuesday morning, as concerns about the tariffs' impact on the broader U.S. economy initially outweighed expected boosts from the move.
"We've seen the dollar weakened, but I think this reflects markets' assumptions about how the tariffs will have a negative impact, not just on external growth, but ... on U.S. growth," Brian Daingerfield, foreign exchange strategist at Natwest Markets in New York, told Reuters.

After hitting a one-month low late Monday following Trump's confirmation of the tariffs, the Canadian dollar slightly strengthened overnight, while investors fled to safe-haven currencies like the Japanese yen and Swiss franc.
"The price action suggests that market participants remain hopeful that the tariff hikes won't remain in place for long, helping to limit trade and economic disruption," said Lee Hardman, senior currency analyst at Japanese bank MUFG.
Market reaction muddled amid uncertainty
The uncertainty surrounding the trade war — with experts unclear on how long tariffs and countermeasures could last — is one of the reasons the market response appeared muted at first, according to one expert.
"What we don't know is duration, and that's key," Derek Holt, vice-president and head of Capital Markets Economics at Scotiabank, stated in a note to clients. He added that Trump can be a volatile figure in terms of his decision-making, so it's unclear how dedicated he is to maintaining the tariffs.

"If they do last, then the effects on the [North American] economy and markets will be much larger. That might not take long, given guidance from the auto sector that shift cancellations and plant closures could begin within roughly a week after arriving."
Holt said the retaliatory measures put in place by Canada, Mexico and China have not been as extreme, at this stage, as what the U.S. has enacted, limiting some of the damage to markets.
While Canada is matching the 25 per cent tariffs, the counter-measures target a smaller volume of U.S. imports. China's tariffs on U.S. goods won't go into effect until March 10, and Mexico will not be announcing which U.S. products its countermeasures will target until Sunday.
But markets are continuing to fluctuate as the reality of the tariffs sinks in — and we haven't seen the full impacts yet, analysts say.
'Sand in the gears of the global economy'
Already, there's been a "massive selloff in world markets," Colin Cieszynski, portfolio manager and chief market strategist at SIA Wealth Management, told CBC News, with Europe seeing "some pretty substantial selloffs," including losses of more than two per cent in Germany and Italy.
"Tariffs throw sand in the gears of the global economy," he said. "And that's why we're seeing stocks everywhere selling off, because a trade war is bad for corporate earnings everywhere and for everybody."
He noted that some utilities and telecom companies, which are more insulated from trade wars due to a bigger domestic focus, are "actually up a little bit," suggesting some investors are defensively shifting their capital.
If tariffs remain in place for a year, Canada would "face the risk of a moderate recession," according to Douglas Porter, chief economist at the Bank of Montreal.
"With little confidence given the lack of historical precedent, we estimate that the tariffs will reduce real GDP growth by roughly 1.5 ppts to around 0.5 per cent in 2025," he wrote in a note to clients, adding that this reflects the anticipated decrease in demand for Canadian goods from U.S. customers, which accounts for about a fifth of Canada's GDP.
Retailers, companies on alert
The tariffs are prompting warnings from retailers, including Target and Best Buy, as they report their latest financial results. Target slumped 4.6 per cent despite beating Wall Street's earnings forecasts, reporting that there will be "meaningful pressure" on its profits to start the year because of tariffs and other costs.
Best Buy plunged 14.1 per cent after giving investors a weaker-than-expected earnings forecast and warning about tariff impacts.
Automakers, one of the industries expected to be hit worst in the trade war, were already reporting losses on Tuesday. Shares of U.S. automakers Ford and General Motors lost 1.9 per cent and 1.6 per cent, respectively, on Tuesday.
Alliance for Automotive Innovation, a trade group representing nearly all major automakers in the U.S., warned on Tuesday that the trade war will lead to drastic price hikes, with some vehicle models anticipated to increase as much as 25 per cent.
At the consumer level in Canada, some impacts were immediate. Numerous province-wide retailers of liquor have announced that they are stripping their shelves of U.S. products, including in Newfoundland and Labrador, Manitoba and Ontario.
The Liquor Control Board of Ontario sells about $1 billion per year in U.S. products, Ontario Premier Doug Ford said Tuesday.
Business owners in Canada are watching the news with dismay. Steve Himel, president of Henderson Brewing Company, told CBC News Network that the company is already having to make changes to its yearly business plan.
"We will start experiencing this pain within days or weeks. But the uncertainty of this is something we are feeling right this minute," he said. "Is this going to last a week or a month? We don't know."
With files from CBC News, Reuters and The Canadian Press