By Louis Navellier of InvestorPlace

After a brutal housing report today, the market went haywire and the Dow pushed down below the 10,000 mark. So what do you do next?

Well the first thing investors need to do is take a cold, hard look at the "stable" companies in their portfolio. Over the last few years, "stable" has meant tracking the market steadily downward on the bad days and failing to bounce back as quickly during brief periods of strength.

You can't afford to hold on to mega-cap stocks like these just because you think they are going to reduce your risk and reduce volatility. The fact is that you'll lose money -- more slowly than in other stocks, but you'll lose it just the same.

Here are nine famous mega-cap stocks that you should dump immediately rather than slowly let them bleed you dry.

Bank of America (BAC)

Financial holding company Bank of America ( BAC - Get Report) serves individual consumers, small to midmarket businesses as well as large corporations. Despite a diverse client base, Bank of America has not fared well as of late. BAC stock has dropped -16% since January, compared to the broader markets which are down slightly. Even worse, the Bank has slid -27% over the past 12 months. With the market antics today, Bank of America just set a new low -- so right now, BAC is definitely a stock to avoid.

Cisco Systems (CSCO)

Internet-protocol based networking company Cisco Systems ( CSCO - Get Report) has had a tough run lately. The tech giant has seen a -11% stock decrease year-to-date. The last few months have been particularly bad for Cisco, as it has seen its stock drop nearly -20% since May. Analysts at EVA Dimensions did not do Cisco any favors last week, when they downgraded the stock from hold to underweight. Clearly, the analysts have no confidence in this stock, and based on its recent history, shareholders shouldn't either. CSCO stock is also flirting with a 52-week low, like Bank of America.

Exxon Mobil (XOM)

Texas-based oil giant Exxon Mobil ( XOM - Get Report) has disappointed shareholders since January, falling -13% year-to-date. Additionally, the stock has missed earnings estimates two of the last four quarters. Consequently, analysts have been scaling back on earnings predictions for XOM, expanding their earnings growth by a smaller and smaller amount for the last four quarters. Time will tell if analysts eventually predict negative earnings for the oil giant. Down -7% over the past 52 weeks while the broader market has tacked on +5%, investors should be avoiding Exxon Mobil.

GlaxoSmithKline (GSK)

GlaxoSmithKline ( GSK - Get Report) is a global healthcare company that creates, discovers, develops, manufactureS and markets various pharmaceutical products, including vaccines, over-the-counter medications and other health related consumer products. Shareholders have watched this stock decline -12% since that start of 2010. A net profit margin of -3.6% also has company officials and stockholders worried. With the stock currently sitting at around $37, GSK may be up slightly from its 52-week low of $32.15; however, the stock's performance over the past eight months should leave investors wary.

Hewlett-Packard (HPQ)

Global software and technology company Hewlett-Packard ( HPQ - Get Report)Co has seen a sharp decline of -25% since January, compared to slight declines in the broader markets. Hewlett-Packard has met or exceeded its earnings estimates for the last four quarters, however in its most successful quarters it has only beaten expectations by a few pennies. And it's bidding war over 3PAR ( PAR) (NYSE: PAR) could be a costly boondoggle for a company that is having trouble managing its own operations. As of this writing, HPQ had set a new 52-week low of $38.36 on Tuesday morning, but could very well set a lower low soon.

Johnson & Johnson (JNJ)

Healthcare product producer Johnson & Johnson ( JNJ - Get Report) is another large company struggling in 2010. Since January, the stock has fallen -10%. The stock appeared stable for the first few months of 2010, but has seen a decrease of -10% since mid-May. Additionally, experts have decreased JNJ's earnings estimates for three consecutive quarters. A recent recall on contact lenses in Europe and Asia certainly won't help JNJ's stock in the near future either.

JPMorgan (JPM)

New York based JPMorgan ( JPM - Get Report) is another financial holding company that has had a forgettable performance this year. JPM has disappointed shareholders to the tune of a -2% drop year-to-date, and a -6% slide over the past 52 weeks. Analysts are projecting a sales growth of -14.2% for the current quarter, which can only worry shareholders. The fact that it is only trading slightly higher than its 52-week low of $35.16 as of this writing (though it could make a new one soon) certainly doesn't make them happy either.

Toyota Motor (TM)

Toyota Motor ( TM) is famous for its Japanese line of cars, minivans and trucks. While the brand may be well established worldwide, its stock has fallen -18% in 2010. Toyota has not fared any better over the past 12 months either, as the car manufacturer is down nearly -20% since last August. It's clear that analysts have little faith in Toyota, as they have predicted earnings of just $0.10 for this quarter. With a net profit margin of just 2.9% and a return on average assets of just 1.9% last quarter, Toyota is anything but a strong buy right now.

Wal-Mart (WMT)

Last on the list of large stocks to sell is retail giant Wal-Mart ( WMT). Like the rest of the companies on this list, Wal-Mart has had a rough 2010, down -4% year-to-date. Analysts have scaled back on Wal-Mart's earnings estimates from last quarter, despite this time of year being considered "back-to-school" shopping season. Its stock may be up around $3 since early July, but Wal-Mart still remains a sell due to its yearly slide and decreased expectations.

As of this writing, Louis Navellier did not own a position in any of the stocks named here.

One of Wall Street's renowned growth investors, Louis Navellier is the editor of four investing newsletters: Emerging Growth (formerly known as MPT Review), Blue Chip Growth, Quantum Growth and Global Growth. His longest-running publication, Emerging Growth, has a track record of beating the market nearly 3 to 1. Navellier is the author of a BusinessWeek bestseller, "The Little Book That Makes You Rich," and the chairman and founder of Navellier & Associates, Inc.