S&P 500 propped up by just 2 sectors shows bull market fatigue

New York

US equities are being pushed along by the fewest stocks in more than 15 years, a sign of fatigue in a bull market that already rivals anything since World War II in duration.

The bulk of this year's increase in the Standard & Poor's 500 Index is attributable to two sectors, healthcare and retail. That's the tightest clustering for an advancing year since at least 2000, data compiled by Bloomberg show.