The Globe and Mail reports in its Tuesday edition that the three major U.S. stock indexes and the Toronto Stock Exchange ended higher on Monday, with Apple giving the S&P 500 its strongest boost as the White House exempted smart phones and computers from new tariffs. A Reuters dispatch to The Globe says that financial and real estate shares led broad-based gains in Canada. The S&P/TSX Composite Index ended up 278.73 points, or 1.2 per cent, at 23,866.53. Uncertainty over future tariffs kept a lid on optimism, with the major indexes finishing off their highs of the day. Investors remain worried about how companies will manage supply chains as more changes are expected on the tariff front. The United States unveiled the exemptions on Friday, but President Donald Trump said on Sunday that he would be announcing the tariff rate on imported semiconductors over the next week. Monday's trading was choppy. The CBOE Volatility Index, the "fear gauge," eased to 30.89, its lowest closing level since April 3. Analysts noted, though, that the S&P 500 is now in a "death cross" pattern, when the 50-day moving average slips below the 200-day moving average. The S&P 500 remains down about 8 per cent for the year so far.