The Globe and Mail reports in its Thursday edition that Wall Street may experience more mini-corrections based on history, but to meet investors' bullish expectations, stocks face higher earnings and interest-rate challenges in the second half of the year. A Reuters dispatch to The Globe reports that the U.S. exceptionalism narrative is alive and well -- a strong economy, the artificial intelligence revolution and fat corporate profits -- which optimists say is reason enough to buy any dip. Investors are overwhelmingly positioned for that narrative to continue delivering this year, but Wall Street may have peaked too early. The S&P 500 Index retreated 5.5 per cent from its high of 5,264.85 points on March 28 to last Friday, a mini-correction spanning 22 days. In terms of depth and length, it was a mild decline, the index was still up on a year-to-date basis, and is rebounding. However, it must be remembered that the March 28 peak was the culmination of an explosive 30-per-cent rally over the preceding five months, propelled by an even more frenzied surge in a handful of mega tech stocks. So if the recent consolidation was down to profit-taking, analysts at AJBell believe there is plenty more profit to take.