Facebook Inc. shares crossed the $30 mark Wednesday, their highest point in six months.
The stock rose $1.53, or 5.3%, to $30.59 a day after the giant social network sent out invitations to the media for an event next week at its Menlo Park, Calif., campus.
The invitation said: "Come and see what we're building."
Facebook, which will report its fourth-quarter earnings this month, might soon roll out changes to users' Timelines.
The Timeline changes people in New Zealand are seeing "is a test we are currently running," Facebook said.
Facebook stock has struggled since the company's initial public offering in May. Facebook went public at $38 a share, but its shares quickly fell on concerns about its prospects in mobile advertising, hitting a low of $17.55 in September.
Although it continues to face challenges, Facebook has made strides in building its mobile business and pushed into e-commerce, buoying investor sentiment.