Would you buy a used Apple (AAPL) iPad? It seems that the market for used electronics is booming. Much of it is resold to developing countries. But even here in the U.S. consumers are dumping their old iPads and buying the new iPad2, the Financial Times reports.

That sets up a huge secondary market. The big beneficiaries are eBay (EBAY) and the Apple Store. On eBay, for example, sales jumped from 3,300 to 7,700 in a week with prices dropping from $531 to $484 in just one week. If buyers had done some research they could have bought the same unit from the Apple Store for $399, according to the FT.

Analyst upgrades:

• Netflix (NFLX) upgraded to Buy from Underperform at BofA/Merrill.
• Rockwell (ROK) upgraded to Outperform from Market Perform at Wells Fargo.
• Chico's (CHS) upgraded to Outperform from Market Perform at FBR Capital.
• Ann Taylor (ANN) upgraded to Buy from Hold at Citigroup.
• Meredith (MDP) upgraded to Buy from Hold at Citigroup.
• CarMax (KMX) upgraded to Outperform from Sector Perform at RBC Capital.
• Family Dollar (FDO) upgraded to Outperform from Sector Perform at RBC Capital.
• Siliconware Precision (SPIL) upgraded to Outperform from Neutral at Macquarie.
• Amedisys (AMED) upgraded to Buy from Hold at Jefferies.
• TRW Automotive(TRW) upgraded to Buy from Neutral at Goldman.
• Magna (MGA) upgraded to Neutral from Sell at Goldman.

Analyst Upgrades

• Xilinx (XLNX) to buy from hold at Auriga.
• Orion Energy (OESX) to buy from neutral at Roth Capital.
• Goodyear Tire (GT) to buy from fair value at CRT Capital.
• RadioShack (RSH) to neutral from underperform at Wedbush.
• Novo Nordisk (NVO) to buy from neutral at Goldman.

It's not a great way to start the year for RadioShack (RSN) as it announced it will have a weak fiscal fourth-quarter. In Monday morning trading, the shares were off nearly 12% to $15.52.

There was also something else that concerned investors: RadioShack's CEO, Julian Day, plans to retire on May 16th, which is when the company will have its annual shareholder meeting. The CFO, Jim Gooch, will be the replacement.

Analyst Upgrades

• Intel (INTC) was upgraded to overweight from equal weight and Autodesk (ADSK) to equal weight from underweight at Morgan Stanley.
• Citigroup upgraded Blackrock (BLK) to buy from hold.
• 99c Only Stores (NDN) was upgraded to buy from hold at Deutsche Bank.
• PetSmart (PETM) was upgraded to overweight from equal weight at Barclays.
• Piper Jaffray upgraded Ruth's Hospitality (RUTH) and Morton's Restaurant (MRT) to overweight from neutral.
• BioMed Realty (BMR) was upgraded to market perform from underperform at FBR Capital.
• Wells Fargo upgraded Piedmont (PDM) to market perform from underperform.

RadioShack (RSH) is not getting good reception this afternoon. At the time of this writing, with about two hours to go before the end of the trading session, shares of the electronics retailer are down 7.8% to $21.03. Volume is heavy.

The third-quarter earnings report was released earlier today, and you may wonder what's up after you see the data. According to Briefing.com, net income of 37 cents per share was two pennies ahead of the estimate. Same-store sales increased over 6%. Overall revenue also seemed pretty decent. So why the negative response by the market?

Let's take a look at two companies that reported quarterly numbers on Thursday. One is a concern that helps cars have a smooth, safe ride; the other is a business that helps consumers buy the electronics they need.

The Goodyear Tire & Rubber Company (GT) has a one-year chart that I would argue is not too attractive. The 52-week low on the stock is $9.65; the 52-week high is $18.84. Yesterday, the shares were under pressure after the release of the second-quarter report. They closed down 5.7% to $11.27 on Thursday. Volume was very strong.

Stocks initially had a hard time finding real direction today. Stocks started out weak with top-line revenue concerns but then rallied with materials. Even Canada's raising its overnight interest rates did not materialize any "rate hike fears" for the immediate horizon.

Here were today's unofficial closing bell levels:

Dow 10,229.96 +75.53 (0.74%)
S&P 500 1,083.48 +12.23 (1.14%)
Nasdaq 2,222.49 +24.26 (1.10%)

Today was one of those days where the news was tied to more hope and a decent start to earnings season than over any great breaking global news. A barely-decent 10-Year Treasury auction was not showing anything rotten, and it seems that the corporate credit markets are starting to open back up. News on deficits being another $1 trillion held nothing back for stock gains. Can you believe it, six straight days of gains in stocks? Cramer coming back after a holiday and saying that the bottom of the market has been seen for the year may have also gotten some comfort back in the game from retail investors.

Here were today's unofficial closing bell levels:

Dow 10,363.02 +146.75 (1.44%)
S&P 500 1,095.28 +16.53 (1.53%)
Nasdaq 2,242.03 +43.67 (1.99%)

Top Analyst Calls

You may be interested in buying an HDMI cable or a cell phone from RadioShack (RSH), but it looks like a few private equity companies and one competitor may be interested in buying the entire company. According to dealReporter, RadioShack had set a July 1 deadline for non-binding indications of interest from any company that was looking at buying the company.

Analysts are speculating that the same private equity companies that were mentioned in a June 1 New York Post article -- Blackstone Group, Kohlberg Kravis Roberts, Bain Capital and TPG -- might still be interested in the consumer electronic retailer. That same article also mentioned that Best Buy Co., Inc. (BBY) may be interested in clearing the competitive landscape by acquiring RadioShack.

Several takeover rumors cropped up this morning. One of those is that RadioShack (RSH) is in the sights of many possible suitors. Those suitors include Blackstone Group (BX), Kohlberg Kravis Roberts, Bain Capital, TPG, and potentially Best Buy (BBY).

These rumors had the shares trading higher this morning, which is really a continuation of RSH's longer-term trend. Since March 2009, RSH has trekked steadily higher, overtaking the 10-month moving average in the process. That said, the stock is stuck just below the $23 level.

In its 2009 annual report last week, Walmart (WMT) indicated it might change direction and "develop new, innovative formats" to cash in on major metro markets. Walmart has long been the go-to retailer in rural communities and the suburbs, but its sprawling supercenter format has never really appealed to urban dwellers.

Well rather than try to find a way to shoehorn a 36-aisle retail monstrosity into midtown Manhattan, Walmart may be taking a very un-big-box approach to its retail locations: go smaller. And according to The Wall Street Journal, the company has already begun to do this.

Radio Shack (RSH), the miniature consumer electronics retailer masquerading as a wireless phone retailer, hasn't exactly been on a tear recently. In fact, there are still rumors that the company wants to sell itself, and even perhaps be gobbled up by Best Buy (BBY) at some point in the near future.

Beleaguered retailer RadioShack Corporation (RSH) may be looking for a strong buyer, possibly to the tune of a $3 billion pricetag. CEO Julian Day, who arrived in 2006 and even admitted almost three years ago that he could not understand how his company remains open for business (like that humor?), has not generated a comeback for the iconic American brand. It's hard to see how Radio Shack manages to compete with leading consumer electronics retailer Best Buy Co., Inc. (BBY) or mega-retailer Wal-Mart Stores, Inc. (WMT), but to this day the chain is still operating.

U.S. stock futures were only slightly higher Friday morning even as European leaders agreed on an aid package for Greece. But investors contemplated earnings from Oracle Corp. and also awaited the latest GDP figures and consumer sentiment data.

European leaders on Friday announced a deal to help Greece with its sovereign debt crisis after months of debates and uncertainty. The aid should help calm jittery markets and stabilize the euro, which has seen fresh 10-month lows following the fiscal crisis.