Apple Inc. shares reached their all-time high last week as excitement builds over the expected release of its tablet computer.

Although Apple has never acknowledged that a device exists, anticipation is peaking as the company enters the new year.

Option traders exchanged about 275,000 contracts in Apple, above its average daily turnover, as calls outpaced puts by nearly two to one, according to option analytics firm Trade Alert

The Financial Times reported on its blog that the company has rented a stage at a venue in San Francisco and will make a "major product announcement" on January 26.

The report, which cited people familiar with the plans, did not say whether Apple would introduce the tablet at the event. Apple has declined to comment.

The tablet could be a touch-screen device that resembles a larger iPhone or iPod touch, and could cost anywhere from $500 to $1,000, analysts have said.

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