These four stocks are looking strong technically, either breaking out or approaching breakout levels.

Image placeholder title

Accelerate Diagnostics (AXDX) - Get Report

Accelerate Diagnostics recently broke out of a falling wedge, one of a series of wedges and breakouts in its steep up-channel off its May low under $11. On Wednesday, the stock jumped $1.90 to $25.50 on relatively large volume of 823,000 shares, on no news from the in vitro diagnostics company. The channel top points to $28-to-$28.50 next. Short interest of 26-times its average volume could fuel the up-move, as shorts cover on a rally.

Image placeholder title

Depomed (DEPO)

Depomed is coming back into play after a nasty spill last week. The stock bounced off support at the rising trendline and is now up six days in a row, culminating with Wednesday's move up 70 cents to $21.79. The specialty pharmaceutical company announced it will participate in a fireside chat at the 2016 Morgan Stanley Global Healthcare Conference next week. The stock is now right at resistance at its August double-top. A move through here could take the stock to $25-to-$25.50 next, and then $29.

Image placeholder title

Exact Sciences Corporation (EXAS) - Get Report

Exact Sciences Corporation has broken out of a two-week consolidation in which it traversed from the top of its rising channel to the bottom. Bouncing off trendline support, the stock has been up three days in a row, closing Wednesday at $19.43, up 41 cents. A move above $20 on increasing volume for the molecular diagnostics company could take its stock to $22.50-to-$23 and then to the channel top near $30 potentially.

Image placeholder title

Gigamon (GIMO)

Gigamon in the last month has been in a bullish consolidation pattern following a big run-up starting in May. The stock in the provider of networking and communications devices in the last three days has rallied off rising trendline support on increasing volume. On Wednesday it closed up $1.20 to $46.24 on 1 million shares. A takeout of recent highs at $47.50 could lead to the channel top in the $52-to-$54 zone and then as high as $60.

See Harry's video chart analysis on these stocks. 

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.