The Financial Post reports in its Tuesday edition that there are reasons to doubt the rebound in U.S. stocks, but momentum may support it. A Bloomberg dispatch to the Post reports that history suggests that rallies can extend further than expected and lead to positive stock performance. The S&P 500 recently achieved its longest stretch of gains since 2004, marking nine consecutive daily increases. Such streaks have often preceded further gains, with the index typically rising a median of 20 per cent a year later, says WisdomTree's Jeff Weniger. He says: "Your gut says 'Maybe this is too much, maybe take some chips off the table.' But in actuality, this often times tends to beget more in the way of the rally." Analysts attribute the gains to many factors, including hopes for eased U.S. tariffs on China, optimistic jobs data and strong earnings from major tech companies. Market observers note that fund managers, fearing missed opportunities, are raising their equity exposure, fuelling upward momentum. The S&P 500 has rebounded from a 20-per-cent loss last month. Earnings for Meta and Microsoft were stronger than expected last week, allowing investors to shrug off less favourable results from Apple and Amazon.