Shares of Aruba Networks (ARUN, $24.32), a provider of enterprise wireless LAN solutions, are up 31% so far this year. The stock has crossed above its 200-day moving average at $23.82. Next up, traders are watching the October high of $25.55.

Zynga (ZNGA, $14.21) is surging more than 14% this morning on extremely heavy volume of 23.5 million shares. This comes after yesterday’s 16.8% gain for shares of the social-gaming company. The market cap is up to $9.9 billion.

Google (GOOG, $590.76) shares moved into the gap on the price chart from January 20, which reaches from $591 up to $631.46. The 50-day moving average stands at $614.23. A 50% retracement of the recent plunge from the January 19 high of $640.99 would bring Google shares back to $602.77.

Zynga (ZNGA, $12.12) bulls like the fact that the social gaming company accounts for 12% of Facebook’s revenue. The shares have surged more than 14% today, even trading up to a high of $12.91 at one point. Zynga now sports a market cap of $8.4 billion.

It’s funny because Zynga bulls were using the argument that the company is expanding beyond the Facebook platform as a reason to like the stock. Now they see Zynga’s dominant position on Facebook as a positive.

For more on Zynga, Tech-Stock Prospector subscribers should see TSP #119 (January 2012, page 3).

Goldman raises its Qualcomm (QCOM, $61.42) price target to $72 from $65 based on the company’s accelerating earnings growth, which is being driven by strong handset demand and chipset share gains.

Cowen says Qualcomm remains a top pick for 2012 based on acceleration in the migration to 3G/4G and solid pricing trends. China represents a key growth driver.

ThinkEquity is quite bullish, boosting its price target to $85 from $75.

Canaccord Genuity starts coverage of Broadcom (BRCM, $36.95) at ‘Buy’ with a price target of $45 based on strength at key mobile & wireless customers and a resumption in growth in the infrastructure & networking unit as service-provider spending picks up again. For 2012, the firm sees EPS of $2.77, vs. the consensus estimate of $2.80.

Facebook (FB) filed its S-1 today. Here are some key stats:

*845 million monthly active users (as of 12/31/2011), +39% from the end of 2010

*483 million daily active users (as of 12/31/2011), +48% from the year-ago level

*425 million monthly active users on Facebook Mobile

*2011 revenue: $3.71 billion, +88% from 2010

*2011 net income: $1.0 billion

*2011 diluted pro forma EPS: 43 cents

*2011 advertising revenue = 85% of total revenue

*Estimated offering amount: $5 billion

*In 2011, Zynga (ZNGA) accounted for about 12% of Facebook’s revenue

*User growth will decline as the company achieves higher penetration rates

Qualcomm (QCOM, $63.17 after hours) shares are up 6% after hours on a beat-and-raise earnings report. For fiscal Q1 (December), EPS of 97 cents tops the consensus estimate by seven cents and revenue of $4.68 billion beat the consensus of $4.58 billion.

For fiscal Q2, the company sees EPS of 91 cents to 97 cents (the consensus is 89 cents) on revenue of $4.6 billion to $5.0 billion (the consensus is $4.51 billion).

For more on Qualcomm, Tech-Stock Prospector subscribers should see TSP #112 (June 2011, page 3) and TSP #116 (October 2011, page 2).

A strong quarterly report has boosted shares of Broadcom (BRCM, $37.16) today by more than 8%.

The communications chipmaker came in with Q4 EPS of 68 cents, three cents above the consensus estimate, on revenue of $1.82 billion, vs. the consensus of $1.81 billion.

For Q1, the company sees revenue of $1.7 billion to $1.8 billion, vs. the consensus of $1.73 billion. Broadcom is benefiting from positive secular trends in the broadband networking and mobile (handsets & tablets) segments.

For more on Broadcom, see TechStock Radar—December 14, 2011.

In early December, FBR Capital made a good call on Broadcom; see TechStock Radar—December 1, 2011.

Google (GOOG, $582.75) shares held the 200-day moving average of $562.63 on the first test of this support level. The stock also held the November low of $561.33.

A 50% retracement of the recent pullback from the January 19 high of $640.99 to the low of $564.55 on January 26 would mean a potential rebound to $602.77.

Piper Jaffray continues to expect Apple (AAPL, $456.48) will introduce its own TV set. The firm’s research indicates that Apple has invested in manufacturing facilities for LCD displays ranging from 3.5” mobile displays to 50” television displays.

There are prototypes in the works and Piper Jaffray thinks a launch late this calendar year is possible.

Piper Jaffray singles out Rovi (ROVI, $32.09), which makes interactive program guides, as a potential beneficiary because an Apple TV could result in higher royalty payments from Apple. Also, other TV manufacturers would turn to Rovi to help them improve the user interface to better compete with Apple TV. Rovi counts Sony, Samsung, Sharp, Panasonic, Vizio and Toshiba as customers.