Despite a shaky start to 2013, Apple ( AAPL) has been on a tear since the summer. I've been a fan of the stock for a while now too -- and I've still have a position in AAPL shares. After spending November in sideways-mode, AAPL looks ready to move higher again.

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After moving up close to 20% off of September's swing low, Apple has been consolidating sideways in a rectangle pattern. The rectangle is a price setup that's formed by a horizontal resistance level above shares at $535, and another horizontal support level down at $510. The rectangle gets its name because it essentially "boxes in" shares. The high-probability trade comes when Apple exits its channel - a move through $535 is a buy signal.

Apple's relative strength, a measure of this stock's performance versus the broad market, has been on fire for the last six months. From a statistical standpoint, an uptrend in RS is a very good indication that shares will continue to do well in the medium-term.

I'm holding on from here.

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