The Financial Post reports in its Thursday edition that IG Wealth Management's Philip Petursson says one day of extreme volatility has shaken Canada's stock market to the point that strategists may reconsider their benchmark targets for the entire year. The Post's Geoffrey Morgan and Stephanie Hughes write that Mr. Petursson says most analysts did not incorporate U.S. President Donald Trump's tariffs into their outlooks and will probably need to lower their year-end expectations for the S&P/TSX Composite Index and the S&P 500 Index. He says: "Even if these tariffs are only in place for let's say a month, that's still a month's worth of potential damage to earnings for the full-year. No one knows what the trigger to a correction is ever going to be, but this certainly could be it." CIBC Capital Markets analyst Ian de Verteuil says the tariffs Mr. Trump planned are "much worse than the market expected." He expects to see a 5-per-cent correction in Canadian equities. That is smaller than others on Wall Street and on Toronto's Bay Street expect, including Jefferies Group analyst John Aiken who says there could be potential for an immediate 10-per-cent impact and a 20-per-cent decline for the index longer-term.