Today we look at two stocks that are trending higher and two stocks likely to move lower. 

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1. Exact Sciences (EXAS) - Get Report

On Monday this stock broke out of a month-long consolidation and across lateral resistance with a move of 91 cents to $20.31. Volume was 2.3 million shares. This rally came on no news from the molecular diagnostics company. The stock is still near support provided by the rising trend line, and volume needs to pick up to really get it going. But watch for a takeout of the next lateral resistance area at $21. A move through there could lead to the August high near $22.80 and then to $24.

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2. Exelixis (EXEL) - Get Report

This stock made another new high on Monday, reaching $13.95 before closing at $13.64, up 9 cents. This stock has gone from $3.66 in March to nearly $14, a huge move. Last week the company's kidney cancer drug was approved by the European Commission. Momentum and the on-balance volume indicator are still strong. Watch for $15 next.

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3. Signet Jewelers (SIG) - Get Report

On the short side, this stock has been in a downtrend off its October 2015 top at more than $150. It has descended its channel in a series of rising wedges followed by sharp drops. It recently broke down from another rising wedge, and has been consolidating sideways along lateral support. A move to less than $76 could lead to $70 or $71 and then maybe even to the mid-$60s.

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4. Red Robin Gourmet Burgers (RRGB) - Get Report

This restaurant company's stock is right on a key support level. Shares have been in a sideways pattern after a steep drop in mid-May. On Monday they fell 56 cents to $45.90, approaching the August low near $45. A move below that could lead to a test of the next support level, which is around $39-$40.

See Harry Boxer's video chart analysis on these stocks.

This article is commentary by an independent contributor, separate from TheStreet's regular news coverage. At the time of publication, the author held no positions in the stocks mentioned.