The tablet projections show the personal computer itself is evolving, and until we see acceptable adaptations to the changing market, weakness in large PC makers like Dell will continue.

Dell's stock is trading at the upper end of its range so far this year, leaving it vulnerable as an attractive option for short sellers.

At the time of publication the author held no positions in any of the stocks mentioned.

This article is commentary by an independent contributor, separate from TheStreet's regular news coverage.
Richard Cox is a university teacher in international trade and finance. His articles appear on a variety of Web sites, including MarketBulls.net, Seeking Alpha, FX Street and others. Investing strategies are based on technical and fundamental analysis of all the major asset classes (stock indices, currencies and commodities). Trade ideas are generally based on time horizons of one to six months.

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