The S&P 500 on Monday broke the record high it held for more than a year as upbeat economic data and low bond yields continued to funnel investors into U.S. equities.
Led by sectors seen thriving in an expanding economy, the benchmark closed at a record 2,137.16 points, overtaking the previous high of 2,130.82 hit on May 21, 2015.
However, the best performing S&P 500 sectors since the previous record have been defensive: utilities and consumer staples, all with double-digit percentage gains.
This outperformance in high-yielding areas of the market underscores investor concerns over the economy's resilience in the face of global stagnation. Britain's decision last month to leave the European Union adds to the uncertainty.
The strong performance of defensive stocks also feeds into the idea that ultra low bond yields have pushed fixed income investors into stocks. Yields on 10-year U.S. Treasury notes rose on Monday, but remained close to the record low of 1.321 percent hit last week.
"We don’t have the rising (bond) yields that would typically check the market rally, that’s one of the reasons we keep going higher," said Jim Paulsen, chief investment strategist at Wells Capital Management in Minneapolis.
"I certainly think (low bond yields) are creating problems in the bond-like stocks. I wouldn’t want to be sitting in utilities or REITs right now."
Despite his concerns, Paulsen said strong economic data - including last Friday's much-better-than-expected payrolls report for June and the expectation that corporate earnings are turning a corner for the better - are supporting the market's run to new highs.
The Dow Jones industrial average rose 80.19 points, or 0.44 percent, to 18,226.93, the S&P 500 added 7.26 points, or 0.34 percent, to 2,137.16 and the Nasdaq Composite gained 31.88 points, or 0.64 percent, to 4,988.64.
The S&P also broke its record intraday high, hitting 2,143.16 points to overtake the previous high of 2,134.72 hit on May 20, 2015. Technology stocks led the way higher on Monday, and the Nasdaq Composite hit its highest level this year.
This week marks the start of a flood of second-quarter earnings from S&P 500 components. Profits are expected to have fallen 5.0 percent last quarter compared to a year earlier. They fell 5.0 percent in the first quarter.
The S&P is trading at 16.5 times earnings expected over the next 12 months, compared to the 20-year median of 15.5 times, according to Thomson Reuters Datastream.
Alcoa shares rose near 4 percent after the bell following its second quarter report. The company beat Wall Street expectations in both earnings and revenue.
"When the market can make new highs and... (as) earnings are going to start to improve, the combination is going to give investors more confidence about more equity exposure in the second half" of the year, said Thomas Lee, managing partner at Fundstrat Global Advisors in New York.