The earnings crunch is on. Intel (INTC) and IBM (IBM) have already reported strong earnings results, and some of this week's biggest anticipated earnings gainers are also tech stocks: Apple (AAPL), AT&T (T) and Microsoft (MSFT).

Analysts surveyed by Thomson Reuters are looking for Texas Instruments Inc. (TXN) to report that its earnings rose 57.1% from a year ago to $0.49 per share for the three months that ended in December. Revenue is expected to total $3.0 billion, up 19.5% from a year ago, during a fourth quarter in which it raised its guidance and declared a quarterly dividend. But the full-year forecast is for earnings of $1.13 per share (-28.0%) on $10.4 billion in revenue (-16.8%). This Dallas-based semiconductor maker's earnings results have been better than expected in the past four quarters, beating estimates by as much as nine cents per share.

The transmission of data wirelessly is the new big movement in tech. Kindles, 4G phones, tablets and more will soon be flooding marketplaces worldwide. The wireless and new telecom revolution will be sweeping the market place for years to come. This leads the investor to the obvious question: "How do I make a buck off all this?"

Here, for your consideration, are some stocks likely to thrive in the wireless tech revolution. As new devices and functionalities come onto the market, each of these stocks could perform strongly. Share prices are as of Wednesday's close.

The Street.com's Jim Cramer says that it's too soon to think about selling the semis, the PCs, the components, the DRAMs.

When do we sell the semis? The DRAMS? The flash? When do we get out of the hard drives?

These are legit questions, but the people who are asking, "When do we sell Micron (NYSE: MU) (Cramer's Take), Western Digital (NYSE: WDC) (Cramer's Take) and SanDisk (NASDAQ: SNDK) (Cramer's Take)?" are the very people who told you never to own them.

That's the conundrum of this semi cycle and PC cycle. Just as we are finally hitting our stride and we realize that the semi cycle is alive and well again, AND NOT JUST RE-STOCKING, all over the papers, including the Wall Street Journal, we see reports crying, "When do we sell?"

TheStreet.com's Jim Cramer says the stimulus over there is actually working.

The most "dismissable" part of this advance, the one that I keep hearing about as a reason we shouldn't trust it, is that it is all "driven by China," as if somehow therefore it is phony and has to end.

To me, this is a preposterous analysis. I would think that anything driven by U.S. is phony and had to end. But China? They have trillions in reserves. They have a population where hundreds of millions of people don't have the most rudimentary of appliances. They have shovel-ready projects galore. They don't have unions or municipal bonds or problems balancing their state government budgets or runaway pensions. They have no legacy industries or big health care problems (at least when it comes to affording it, not when it comes to quality, which is probably pretty suspect). They have proved time and again that they can grow their economy at about 8% and when it falters they can get it right back on track, which is what they have done this time again.

TheStreet.com's Jim Cramer says a revenue beat from the world's largest chipmaker reminds us why we own stocks.

Intel (NASDAQ: INTC) (Cramer's Take) still has it. It has the ability to galvanize like no other stock on the Nasdaq. It can energize and fulfill and make people feel all is right in the world.

The signs for this one were everywhere. Samsung last week saying that it is the new bull market in semis. Taiwan Semi (NYSE: TSM) (Cramer's Take) saying it. Advanced Micro Devices (NYSE: AMD) (Cramer's Take) saying it. SanDisk (NASDAQ: SNDK) (Cramer's Take), with its flash memory cards, saying it. Texas Instruments (NYSE: TXN) (Cramer's Take) saying it. Analog Devices (NYSE: ADI) (Cramer's Take) saying it. Qualcomm (NASDAQ: QCOM) (Cramer's Take) saying it.

But nobody was listening.

Analyst upgrades:

• Thomas Weisel upgraded SanDisk (NASDAQ: SNDK) to Overweight from Market Weight due to accelerating manufacturing cost declines, potential NAND flash sourcing upside at Toshiba (OTC: TOSBF) and Samsung and an increase in 2H09 demand.
  
• Oppenheimer upgraded Quality Systems (NASDAQ: QSII) to Perform from Underperform to reflect potential benefits from the stimulus package and channel checks that indicated IT budgets are stabilizing. The firm raised its target price on shares to $54 from $40.
  
• RBC Capital upgraded OSI Pharmaceuticals (NASDAQ: OSIP) to Outperform from Sector Perform following positive Tarceva survey results and cites valuation.
• Marriott (NYSE: MAR) was upgraded to Outperform from Market Perform at JMP Securities.
  
• Grainger (NYSE: GWW) was upgraded to Buy from Neutral at BofA/Merrill.
  
• Duncan Energy Partners (NASDAQ: DEP) was upgraded to Buy from Neutral at UBS.

"For two years chips stocks have unequivocally stunk; the industry has been mired in a host of problems, including massive overcapacity and shrinking demand," says Toby Smith, adding, "But that's changing."

In his ChangeWave Investing, he suggests, "One recommendation in this sector is SanDisk (NASDAQ: SNDK), the leader in flash memory -- one of the strongest segments in semis today."

"For the second quarter in a row the semiconductor sector is showing major signs of momentum that are so good that the industry ranked at the top of the nearly 20 industries we track each quarter.

"The bottom line is that these results clearly indicate that it is time to be invested in the semis, and the best way to do this is with two short-term plays.

Today was one of those low news flow days where you never had any real solid feel for where the market would close until the very end of the session. We have seen too many rallies dashed by closing imbalances at the end of the day when there was thin volume.

Some Philly Fed data helped hold the market, and that was on the heels of the largest drop in continuing jobless claims since 2001. Some of the agriculture stocks staged a small comeback after yesterday's huge losses.

Here were the unofficial closing bell levels:

Dow 8,554.77 +57.59 (0.68%)
S&P 500 918.34 +7.63 (0.84%)
Nasdaq 1,807.72 -0.34 (-0.02%)

Top Analyst Upgrades
Top Analyst Downgrades

TheStreet.com's Jim Cramer says besides the basket plays, you can nibble at the parts suppliers like Taiwan Semi and SanDisk.

The pain of coming in on a day like today is unfathomable. But get used to it. We have first of the month and Mutual Fund Monday and roaring Asian markets and worldwide stimulus. The money coming in over the transom seems to be accelerating as people sense that the GM (NYSE: GM) (Cramer's Take) news is long in the stock market and there doesn't seem to be a crisis at hand that can stop us today. I say "today" because I am sure by the end of the day the higher-inflation/higher-taxes mob will have ginned up something to make the markets less appetizing than they seem.

But I think you shouldn't be so daunted about coming in here. Our markets are way behind so many others, including Europe -- that's probably a mistake at this point -- but most especially anything China.

Analyst upgrades:

• Goldman upgraded SanDisk (NASDAQ: SNDK) to Buy from Neutral and raised their target to $22 from $16 citing the renegotiated royalty agreement with Samsung.
• Goldman also upgraded Starwood Hotels (NYSE: HOT) to Buy from Sell and raised their target to $27 from $11 citing strong operating leverage as RevPAR recovers.
• KeyBanc upgraded Werner Enterprises (NASDAQ: WERN) to Hold from Underweight citing a recent improvement in freight demand.
• J.C. Penney (NYSE: JCP) was upgraded to buy from Underperform at Banc of America/Merrill.
• Savvis (NASDAQ: SVVS) was raised to Outperform from Perform at Oppenheimer.
• Sanofi-Aventis (NYSE: SNY) was upgraded at Citigroup to Buy from Hold.

Despite Moody's claiming the US's Triple-A rating was stable, the markets sold off today. The markets tried to hold up but the afternoon session was marked by selling as bond yields rose on the long-end of the curve. The 10-Year Treasury yield was up 20 basis points to 3.697% and the 30-Year Treasury yield was up 16 basis points to 4.60%.

Here were the unofficial closing bell levels:

Dow 8,300.98 -172.51 (-2.04%)
S&P 500 893.13 -17.20 (-1.89%)
Nasdaq 1,731.08 -19.35 (-1.11%)

Top Analyst Upgrades
Top Analyst Downgrades

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• American Express Co. (NYSE: AXP) Q1 profit blew away estimates, sending shares soaring.
• Apple Inc. (NASDAQ: AAPL) topped analysts expectations and offered conservative guidance.
• Boeing Co. (NYSE: BA) reported better-than-expected results but warned that if faced challenges.
• Coach Inc. (NYSE: COH) topped Q3 profit estimates and announced the start of quarterly dividends.
• Continental Airlines Inc. (NYSE: CAL) widened is net loss in Q1 but still beat low Wall Street estimates.

SanDisk (NASDAQ: SNDK - option chain) shares are headed higher today after reporting a first-quarter loss of $208 million, or 92 cents per share. SNDK's adjusted loss of 48 cents per share was not as bad as the 76-cent loss forecast by analysts. If you think that the stock won't fall by too much in the coming months, then now could be a good time to look at a bullish hedged trade on SNDK.

SNDK opened this morning at $14.86. So far today the stock has hit a low of $14.69 and at 11:30 is trading at the intraday high of $15.68, up 1.97 (14.4%). The chart for SNDK looks neutral and S&P gives SNDK a neutral 3 STARS (out of 5) hold ranking.

Analyst upgrades:

• KeyBanc upgraded Greenbrier (NYSE: GBX) to Buy from Hold as it believes the company has options to forestall covenant violations or bankruptcy, event if conditions deteriorate further.
  
• Friedman Billings upgraded Whole Foods (NASDAQ: WFMI) to Market Perform from Underperform citing low expectations, favorable FTC settlement, progress on cost cutting, and valuation.
  
• JP Morgan believes First Merit (NASDAQ: FMER) is one of the best positioned Midwest banks to weather the storm and notes its compelling valuation and capital levels. The firm upgraded shares to Overweight from Neutral.
• Coca-Cola Enterprises (NYSE: CCE) was raised to Buy from Neutral at Goldman.
  
• Newell Rubbermaid (NYSE: NWL) was upgraded to Buy from Neutral at Banc of America/Merrill.
  
• Compass Minerals (NYSE: CMP) was lifted to Outperform from Perform at Oppenheimer.

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• Alcatel-Lucent (NYSE: ALU) reported a huge Q4 loss on a charge and the economic slowdown.
• Avon Products Inc. (NYSE: AVP) fell short of Q4 expectations but announced a dividend increase.
• Carlisle Companies Inc. (NYSE: CSL) Q4 numbers resulted in an analyst's upgrade.
• Costco Wholesale Corp. (NASDAQ: COST) warned that its earnings would fall well below expectations.
• Electronic Arts Inc. (NASDAQ: ERTS) posted a bigger-than-expected loss and outlined cost cutting plans.
• Hasbro Inc. (NYSE: HAS) shares took a hit ahead of its earnings report due to rival Mattel's Q4 results.