FINANCIAL MARKETS

NEW YORK—U.S. stock indexes ticked lower on Thursday, but only after a circuitous ride that saw them flip multiple times between small gains and losses. It’s the latest meandering course for a market that’s been pushed in many directions the last few weeks.

Food companies struggled after the makers of Spam and Folgers coffee reported weaker-than-expected results, and grocers fell after Amazon said it plans to cut prices for avocados, eggs and other products when it takes control of Whole Foods next week. Retailers, meanwhile, were big winners after a wide variety said they earned fatter profits last quarter than Wall Street forecast.

The Standard & Poor’s 500 index fell 5.07 points, or 0.2 percent, to 2,438.97. Through the day, it flipped between gains of up to 0.3 percent and losses of up to 0.3 percent.

The Dow Jones industrial average fell 28.69 points, or 0.1 percent, to 21,783.40, the Nasdaq composite fell 7.08 points, or 0.1 percent, to 6,271.33 and the Russell 2000 index of small-cap stocks rose 4.14 points, or 0.3 percent, to 1,373.88.

The market has drifted up and down since the S&P 500 set a record high earlier this month. Helping stocks has been strong growth in profits, and most S&P 500 companies have reported higher earnings for the spring quarter than analysts forecast, along with healthier revenue.

Hurting stocks have been worries about politics both in Washington and abroad. Doubts are rising about how much help the Republican-led White House and Congress can provide for businesses. Several crucial deadlines are coming up that could damage the economy, including a vote to avoid a default on the national debt, though most investors expect calamity to be averted. This week has also featured lighter trading than usual, with few market-moving events on the calendar. That may be exacerbating moves for the market. For all the noise, though, the S&P 500 is still within 1.7 percent of its record.

Shares of refiners rose along with the price of gasoline as Hurricane Harvey approached the Texas coast of the Gulf of Mexico, which is home to many refineries. Valero Energy rose $1.73, or 2.6 percent, to $67.44, and Marathon Petroleum gained 96 cents, or 1.9 percent, to $51.13. Wholesale gasoline futures rose 5 cents, or 2.8 percent, to $1.66 per gallon.

Benchmark U.S. crude fell 98 cents, or 2 percent, to settle at $47.43 per barrel. Brent crude, the international standard, fell 53 cents, or 1 percent, to settle at $52.04 a barrel.

Natural gas rose 2 cents to settle at $2.95 per 1,000 cubic feet, heating oil was close to flat at $1.62 per gallon.