General Motors Co. is still accepting investor orders for shares in its initial public offering and is not expected to close the order books until early next week, three people familiar with the matter said on Friday.

The IPO is expected to price around the top end of the range and exercise the full greenshoe, two sources said.

Demand for common shares is around $60 billion and rising, the sources said. GM filed with U.S. regulators to raise about $10 billion worth of common stock, meaning that  portion of the IPO is about six times oversubscribed.

Retail investors are expected to account for about 20 percent of the IPO, two sources said. There is  retail demand for $2 billion to $3 billion worth of shares, one source said.

There is also “excess demand” for the $3 billion worth of preferred shares GM plans to sell, the sources said.

Middle Eastern and Asian sovereign wealth funds have committed to a combined $2 billion stake, two sources said.

The size of the stake to be taken by GM’s Chinese partner SAIC Motor Corp. is expected to be complete over the weekend, three sources said. The stake is expected to be less than $2 billion, two sources said.

The sources did not have permission to speak publicly and declined to be named.