By Saumya Vaishampayan 

U.S. stocks opened mixed Friday after the Organization of the Petroleum Exporting Countries decided to maintain its oil production target.

Shares of transportation companies that benefit from lower oil prices rose, while shares of companies tied to the oil industry fell.

The Dow Jones Industrial Average rose 31 points, or 0.2%, to 17858. The S&P 500 index declined three points, or 0.1%, to 2070, while the Nasdaq Composite Index advanced eight points, or 0.2%, to 4796.

The U.S. stock market was closed Thursday for Thanksgiving. On Friday, it will close earlier than usual at 1 p.m. Eastern time.

The OPEC cartel on Thursday decided to stick to its current target of producing 30 million barrels of oil a day, rejecting calls to cut output amid a steep slump in oil prices. The decision was accompanied by a commitment from OPEC members to comply with it. That implies a cut of around 300,000 barrels a day, based on OPEC's figures, since the 12-member cartel currently pumps more than its production ceiling. But that's a relatively small change in global oil supply.

Brent, the global oil benchmark, rose 1% to $73.32 a barrel. It fell 6.7% on Thursday after the OPEC meeting.

On the New York Mercantile Exchange, crude-oil futures dropped 5.8% to $69.42 a barrel. The Nymex floor was closed Thursday in observance of the Thanksgiving holiday, though electronic trading took place.

U.S. stocks have more than recovered from a pullback in September and October that was sparked in part by the drop in oil prices and concerns about the pace of global growth. The Dow closed at its 30th record on Wednesday, while the S&P notched its 47th closing high. Gains in recent weeks have been fueled by improving U.S. economic data and the third-quarter earnings season, which was broadly upbeat.

Many investors say falling oil prices will benefit U.S. consumers, who will begin spending more and help boost the U.S. economy.

"Overall, it is a net positive for the U.S., [because] we are a consumer-led economy," said Quincy Krosby, market strategist for Prudential Financial, referring to the OPEC decision.

Declines in energy stocks weighed on the S&P 500, with the sector down 5.6%. Chevron Corp. shares slumped 5.3% and those of Exxon Mobil Corp. lost 3.3%, leading declines on the Dow industrials.

The OPEC decision and lower oil prices could lead to more deal activity in the energy sector, said Ms. Krosby of Prudential Financial.

Shares of Southwest Airlines Co. and Delta Air Lines Inc., which stand to benefit from lower oil prices, rose the most on the S&P 500.

Russia's ruble, which this year has been pummeled by geopolitical tensions and resulting sanctions, hit yet another all-time low against the dollar, while fellow oil-linked currencies such as the Canadian dollar, Norway's krone and Nigeria's naira slipped too.

"OPEC yesterday delivered just about the most unfriendly possible response to [the] ruble and oil prices," said Tom Levinson, a strategist at Sberbank. He added that it was unclear whether Russia's central bank would intervene to curb the currency's slide.

European stock indexes were broadly lower, with the Stoxx Europe 600 down 0.3%. Data released Friday showed the eurozone's annual rate of inflation in November fell further below the European Central Bank's target of just under 2%.

In other commodity markets, gold futures fell 1.5% to $1179.20 an ounce.

Demand for government debt increased, sending the yield on the 10-year Treasury note down to 2.214%. Yields fall as prices rise.

Josie Cox and Chiara Albanese contributed to this article.

Write to Saumya Vaishampayan at saumya.vaishampayan@wsj.com

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