Making a change to the model portfolio this week as well as reviewing and previewing earnings for several other names.

With so much bad news already baked in to nearly every stock, the market's mood and its current standing will affect each company as it reports.

The market conditions could certainly go from bad to worse, so be prepared to take action when the time is right.

Research In Motion's earnings did disappoint, but given its solid prospects, the market's reaction was over-the-top.

The impact of mark-to-market accounting on mortgage-backed securities holders and problems with subprime mortgages are at the root of the present market problems.

Softening demand for DRAM and NAND flash has tempered the industry's general outlook for second half of the year.

High-profile conferences and earnings results from several companies offer some insight into the state of the sector.

The recent market decline offers an opportunity to pick up shares of this tech name.

Dell's disappointing report demonstrated management's lack of awareness relative to its current investor base.

As the end of the year comes into view, taking stock of the model portfolio holdings prompts a number of changes.