Aetna to buy up an extra $750M in stock

Hartford health insurer Aetna Inc. plans to buy an extra $750 million on its common stock on the open market from time to time, authorities say.

Aetna said that is on top of an approximately $248 million repurchase authority its board previously granted.

Buying back stock is a way for companies like Aetna to curb the number of shares circulating on the open market, thereby potentially rewarding stockholders by boosting the value of their holdings.