The Globe and Mail reports in its Saturday edition that after warnings of a recession this year, the worry now is how to avoid being swept away by so much good news. The Globe's Ian McGugan writes that jobs have remained plentiful in Canada and the United States, and the runaway inflation of two years ago has defied gloomy forecasts and faded steadily away. Meanwhile, the artificial intelligence boom is powering a market frenzy. Small wonder, then, that people on three continents are snapping up stocks. The S&P 500 Index hit a record high this week, as did the Stoxx Europe 600, and Toronto is not far behind. Even Japan's Nikkei 225, the graveyard of high hopes, has finally managed to surpass its 1989 high. The most glaring danger is the market's reliance on an extremely small group of big winners. The sizzling record of U.S. stocks in recent years rests largely on seven names -- Apple, Alphabet, Amazon, Meta, Microsoft, Nvidia and Tesla. It is not clear how long the already expensive Magnificent Seven can keep on powering big gains. According to Citigroup the Magnificent Seven are trading close to double their historical norm and not far off the levels they hit during the dot-com bubble of the late 1990s.