The Globe and Mail reports in its Friday, May 12, edition that Canada's benchmark equity index can thank just five companies for 57 per cent of its gains this year. A Bloomberg dispatch to The Globe reports that while finance, energy and materials account for two-thirds of the S&P/TSX composite index, three of the top five gainers are currently outside these sectors: Canadian National Railway, Restaurant Brands International and Rogers Communications. The other two are usual suspects Brookfield Asset Management and Royal Bank of Canada. Removing these five contributors would reduce the index's gain by 1.3 percentage points this year, leaving it with a 1-per-cent advance, which would be among the smallest of more than 100 global peers tracked by Bloomberg. By comparison, the top five in 2016 consisted of three banks and two energy companies. BMO analyst Brian Belski says, "Concentrated outperformance by a few stocks is not an anomaly." He recommends investment beyond the traditional sectors. He says, "This type of strategy significantly outperforms during trading-range environments in commodities, which we think we're in."