Here are four stocks with similar patterns in which they broke out, rested, and now appear to be breaking out again. You may want to consider them for your portfolio.

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CYTK

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YCharts

Cytokinetics, Incorporated (CYTK) - Get Report

Cytokinetics exploded out of a base three weeks ago after beating Wall Street earnings estimates, and has settled into a sideways wedge, or pennant, pattern. On Wednesday the biopharmaceutical company's stock rallied off the bottom of the wedge, up 65 cents, or nearly 6%, to $11.63, on a pick-up in volume. The move broke the stock through its declining topsline, and it could see $13-to-$14 next.

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EGHT

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8x8 Inc. (EGHT) - Get Report

8x8 Inc. also recently broke out and then flagged in a sideways formation. The voice over Internet protocol (VoIP) technology company's stock broke out of the formation two days ago, and continued to run on Wednesday, up 46 cents, or 4%, to $12.17 on 1.8 million shares. Next targets are $14, and then $16. 

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PACB

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Pacific Biosciences of California, Inc. (PACB) - Get Report

Pacific Biosciences of California broke out of its sideways pattern on Wednesday with a move up 69 cents, or 8.6%, to $8.69 on nearly 3 million shares on no news. The move clearly took the stock through the top of the wedge pattern it's been in since more than doubling to over $8 in early October. Watch for a move into the $11-to-$12 zone next. 

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WTW

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Weight Watchers International, Inc. (WTW) - Get Report

Weight Watcher International exploded again on Wednesday, up $2.71, or 11.3%, to $26.61 on 7.8 million shares, after optimistic comments by management at the Global Consumer & Retail conference. It looks like the stock is headed toward the highs from late last year around $30. 

See a video with chart analysis on these stocks.

This article is commentary by an independent contributor, separate from TheStreet's regular news coverage.