China’s official PMI hits a nine-month low in August. (Reuters)

WellPoint Inc. (NYSE: WLP) CEO Braly steps down. (Reuters)

General Motors Co. (NYSE: GM) to invest $1 billion in Russia within five years. (Reuters)

Samsung vows to fight ban on sales of smartphones in the United States. (WSJ)

Zynga Inc.’s (NASDAQ: ZNGA) chief creative officer to resign. (WSJ)

Liberty Media Corp. (NASDAQ: LMCA) raises its stake in Sirius XM Radio Inc. (NASDAQ: SIRI). (WSJ)

The Obama administration releases final fuel-efficiency standards for cars and trucks. (WSJ)

Widespread computer-network problems at United Continental Holdings Inc. (NYSE: UAL) cause flight delays around the world. (WSJ)

GM’s Cadillac division intends to double its U.S. sales over the next two years. (WSJ)

ECB President Mario Draghi is under pressure to provide details of his bond-buying plan to save the eurozone. (NYT)

New York investigates whether energy drink makers are misleading consumers. (NYT)

Best Buy Co. Inc.’s (NYSE: BBY) decision to grant Richard Schulze access to its books puts pressure on him to make a takeover bid. (FT)

Bond yields fall ahead of Italian Prime Minister Mario Monti’s meeting with German Chancellor Angela Merkel. (Bloomberg)

Britain considers new rules to make the London Stock Exchange more attractive to start-ups. (Bloomberg)

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