As Wall Street watches to see which direction the S&P 500 is going to go this week, investors in Bank of America (BAC) have already made their decision. They are sending the stock south.

Bank of America gapped down after its earnings announcement on Friday, July 16, and it is continuing to move lower this week. In fact, the stock is at its lowest level since July 2009.

If you are getting nervous about Bank of America, you are not alone. Goldman Sachs announced today that it is removing the stock from its Conviction Buy List -- citing the bank's announcement that its debit interchange fees could fall by as much as 80%. Goldman went on to say that JPMorgan Chase (JPM) looks like a better bet than Bank of America.

Northrop Grumman (NOC) may be a U.S. Air Force favorite, but it does not deserve a place in your portfolio right now.

Northrop announced it received an indefinite-delivery/indefinite-quantity (ID/IQ) award from the Air Force that has a potential value of $919 million collectively over 10 year. Northrop will compete to provide mission planning software systems and tools that enable warfighters to plan missions and transfer required data to aircraft avionics.

Unfortunately for Northrop, this announcement was overshadowed by Goldman Sach's announcement that it has added Northrop to its "conviction sell" list today.

Frankly, even with the announcement of this new contract, I agree with the folks at Goldman. Northrop has been in a persistent downtrend since the end of April and is continuing to form lower highs and lower lows. A temporary support level has established itself at $54, but I don't expect this level to hold up for long.

Investors call services are pushing put option prices higher in the diversified utilities industry today.

Any time the volatility skews above 1.00, it is an indication that calls are more expensive than puts. Typically, when calls are more expensive than puts, it means the demand for calls is greater than the demand for puts because investors believe the stock is going to rise in the future and they want to take advantage of that movement by buying calls.

Is it time to dump dividend stocks before the Bush tax cuts expire? In 2001 and 2003 Bush, passed several tax relief bills that will automatically expire at the end of 2010. Obama campaigned against the tax relief packages and many Americans may be facing a huge tax increase as the package expires.

Dividend taxation is of particular concern to investors. Under the relief packages, dividends taxes were cut to 15%, but if the package expires, dividends may be taxed as ordinary income at levels up to 39.6%.

Shares of CardioNet (BEAT) were punished Monday morning after an unfavorable decision from the Centers for Medicare and Medicaid Services (CMS). The administrative group proposed that the reimbursement rates on the technical component of mobile cardiovascular telemetry should stay carrier-priced for 2011, defying CardioNet's wishes to obtain a national reimbursement rate for the technology.

Now, CardioNet will attempt to lobby CMS during the public comment period prior to the final ruling, which is due by Nov. 1. "We will work diligently during the public comments period to request that CMS change its recommendation to one that is more beneficial to Medicare recipients who depend on" devices containing CardioNet's technology, explained CEO Joe Capper.