(May 9): The Dow Jones Industrial Average ended higher on Wednesday, stretching its winning streak to six straight and closing above 39,000 points for the first time in five weeks, as investors kept betting on supportive US monetary policy.

The other Wall Street benchmarks cooled a touch as momentum stalled and US Treasury yields rose on the day of a 10-year notes auction. The S&P 500 ended unchanged after four sessions of gains, and the Nasdaq Composite slipped to a second consecutive decline.

There was not much news to move the indexes, outside of reports from individual companies.

"We're just waiting for the next catalyst to jump-start the direction in the market, and we're probably going to get that next week," said Ameriprise chief market strategist Anthony Saglimbene. The producer price index (PPI) is due on May 14, and the consumer price index (CPI) scheduled for May 15.

"I think traders are reluctant to take broader stocks or broader averages higher, until they get a fresh update on inflation," he added.

The S&P 500 has leveled off close to the 5,200 mark, which it last closed above on April 9. On Wednesday, it was hampered by sliding shares of Uber which posted a surprise quarterly loss and issued a downbeat forecast.

The ride-hailing platform fell 5.7%, was among the S&P 500's biggest decliners, after it forecast second-quarter gross bookings would not meet expectations.

Tesla fell 1.7% after Reuters reported US prosecutors were examining whether the company committed securities or wire fraud by misleading investors and consumers about self-driving capabilities of its electric vehicles.

Other megacap stocks such as Nvidia, Amazon and Alphabet slipped between 0.2% and 1.1%, as the 10-year Treasury yield edged up.

Rising yields helped dampen optimism spurred by a positive earnings season and softer-than-expected labour market data last week that had tempered concerns about the Federal Reserve (Fed) keeping interest rates higher for longer.

Traders are pricing in a 67% chance of the Fed cutting rates by at least 25 basis points in September, according to the CMEGroup's Fedwatch tool, up from about 54% a week ago.

Fed policymakers who spoke on Wednesday stayed consistent to recent messaging, including at the US central bank's policy meeting last week.

Boston president Susan Collins said the current setting of monetary policy will slow the economy in the way she believes will be necessary to get inflation back to the Fed's 2% target.

The Dow Jones Industrial Average rose 172.13 points, or 0.44%, to 39,056.39, the S&P 500 lost 0.03 points, or 0.00%, to 5,187.67 and the Nasdaq Composite lost 29.80 points, or 0.18%, to 16,302.76.

Among S&P sectors, utilities rose 1.1%, extending its run of higher finishes to 14 out of the last 16 sessions, boosted as Vistra Corp jumped 9.1% after reporting strong earnings.

However, seven of the 11 sectors declined, with real estate, materials and consumer discretionary the worst performers.

Intel fell 2.2% after warning of a sales hit from the US revoking some of the chipmaker's export licenses for China.

Tripadvisor tumbled 28.7%, its largest ever one-day percentage drop, after the online travel agency ruled out a possible sale at this time and posted a surprise quarterly loss.

Uber rival Lyft climbed 7.1% after projecting higher-than-expected gross bookings and a core profit for the current quarter.

The S&P 500 posted 32 new 52-week highs and three new lows while the Nasdaq recorded 100 new highs and 83 new lows.