NEW YORK -- U.S. stock indexes are rising Wednesday morning as software maker Salesforce leads a rally in technology companies. Health care stocks are also higher. Luxury retailer Tiffany is dropping after it said tourists from China pulled back on spending in its latest quarter, which hurt its sales.

Federal Reserve Chairman Jerome Powell will give a speech later in the day and investors who are worried about slowing economic growth will look for hints the Fed might be willing to raise interest rates at a slower pace.

KEEPING SCORE: The S&P 500 index added 11 points, or 0.4 per cent, to 2,693 as of 11:15 a.m. Eastern time. The Dow Jones Industrial Average jumped 197 points, or 0.8 per cent, to 24,946. The Nasdaq composite rose 34 points, or 0.5 per cent, to 7,117. The Russell 2000 index of smaller-company stocks gained 5 points, or 0.3 per cent, to 1,498.

OUT IN FORCE: Customer-management software developer Salesforce climbed 4.7 per cent to $133.50 after its earnings and revenue were stronger than analysts expected. That helped pull technology companies higher. Software maker Adobe rose 3.9 per cent to $241.37 and cloud computing company Citrix Systems added 1.6 per cent to $110.28. Microsoft rose 1.2 per cent to $108.38 and Apple picked up 0.9 per cent to $175.89.

DIAMOND CUT: Tiffany skidded 11.5 per cent to $92.83 after it said foreign tourists, especially from China, didn't spend as much at its stores in its latest quarter. That contributed to disappointing sales for the company. Chinese economic growth has slowed since the government clamped down on bank lending last year as part of an effort to rein in surging debt. The U.S.- China trade dispute has also contributed to the slowdown.

Rival jeweler Signet lost 5.2 per cent to $50.04.

FED SPEECH: Powell will address the Economic Club of New York on Wednesday. Recent remarks by Powell and other officials have made investors more hopeful that the Fed might raise interest rates at a slower pace next year. It's been steadily raising those rates since the end of 2015 and is expected to announce another increase in December. But with economic growth in the U.S. and other regions likely to slow down next year, investors are concerned that rising interest rates will hinder the economy and the bull market.

Bond prices fell. The yield on the 10-year Treasury note rose to 3.07 per cent from 3.05 per cent. The yield on the 2-year note jumped to 2.84 per cent from 2.81 per cent.

HOME SALES SINK AGAIN: The Commerce Department said sales of new U.S. homes plummeted 8.9 per cent in October and the number of newly built, unsold homes sitting on the market climbed to the highest level since 2009. Sales of new homes have dropped 12 per cent over the last year as higher mortgage rates have caused would-be buyers to back away. Sales of already-built homes have also fallen this year.

The drop in home sales has made some investors nervous. They view home sales as an indicator of how much money people are willing to spend because a home is the biggest item most people will purchase.

It's also crushed homebuilder stocks. On Wednesday, D.R. Horton fell 1.6 per cent to $35.61 and PulteGroup shed 2.2 per cent to $28.51. The S&P index of homebuilders is down 30 per cent this year.

JAMMED UP: Jam and packaged food maker J.M. Smucker fell 5.8 per cent to $102.77 after it reported a smaller profit and less revenue than analysts had expected. Smucker also pared its forecasts for the full year. General Mills lost 2 per cent to $41.61 and Kellogg lost 0.7 per cent to $61.80.

STABILIZING? Boeing recovered a sliver of its recent losses as investigators in Indonesia discussed their probe into the crash of a Boeing 737 MAX 8. Indonesian authorities said they are still struggling to understand why the plane crashed, but added that faulty equipment and carrier Lion Air's own safety failures had pilots fighting for control of the plane as it fell into the Java Sea on Oct. 28, killing all 189 people aboard.

The MAX is Boeing's newest plane, and questions about the crash have pulled Boeing's stock lower. The stock rose 2.1 per cent to $324.68 Wednesday, but it's still down 12 per cent since Nov. 8, when federal regulators gave an emergency directive telling pilots how to handle incorrect data from a sensor that may have malfunctioned during the flight. Pilots for U.S. airlines have said that they were not told about a new feature in the MAX that could pitch the nose down sharply if sensors indicate that the plane is about to stall.

ENERGY: Benchmark U.S. crude fell 1.1 per cent to $50.97 a barrel in New York. Brent crude, the standard for international oil prices, lost 1.5 per cent to $59.47 a barrel in London.

CURRENCIES: The dollar rose to 114 yen from 113.79 yen. The euro fell to $1.1282 from $1.1296.

OVERSEAS: France's CAC 40 rose 0.1 per cent. The FTSE 100 in Britain fell 0.2 per cent and Germany's DAX lost 0.1 per cent.

Japan's benchmark Nikkei 225 rose 1 per cent and South Korea's Kospi recovered 0.4 per cent. Hong Kong's Hang Seng added 1.3 per cent.