Zacks Buy List Highlights: SiRF Technology Holdings, Inc., Rockwell Collins, Inc., Sonic Innovations, Inc. and Ceradyne, Inc.

CHICAGO -- Zacks.com releases the latest list of Zacks Rank Buy Stocks. Everyday on Zacks.com, four stocks are selected based on how well they match the criteria for the four main schools of investing: Aggressive Growth, Growth & Income, Momentum and Value. The four Zacks Rank Buy stocks highlighted today are SiRF Technology Holdings, Inc. (Nasdaq: SIRF), Rockwell Collins, Inc. (NYSE: COL), Sonic Innovations, Inc. (Nasdaq: SNCI), and Ceradyne, Inc. (Nasdaq: CRDN).

Stocks ranked #1 (Strong Buy) by Zacks have produced an average annual return of +31.8% since inception in 1988. During the 2000-2002 bear market, Zacks #1 Rank stocks gained 43.8% while the S&P 500 tumbled 37.6%. To see the full Zacks #1 Rank (Strong Buy) List, or the rank for any other stock, visit: http://at.zacks.com/?id=88

Here is a synopsis of today's Zacks Rank Buy Stocks:

Aggressive Growth - SiRF Technology Holdings, Inc. (Nasdaq: SIRF)

SiRF Technology Holdings, Inc. recently reported a strong quarter with excellent guidance and saw its stock shoot up 25%. Over the past 90 days, this year's earnings estimates have risen 12 cents to 70 cents per share. Next year's numbers have jumped an even more impressive 31 cents to 92 cents per share. The company has ample growth opportunities in the automotive market which should keep growth strong for the foreseeable future.

Growth & Income - Rockwell Collins, Inc. (NYSE: COL)

Rockwell Collins, Inc. met or beat analysts' earnings expectations for 16 straight quarters. After posting solid results for the first quarter of fiscal 2007, the company upped its full-year earnings per share guidance. Analysts responded by raising their profit forecasts. Earnings per share are projected to grow 14.5% over the next 3-5 years. This Zacks #1 Rank stock has a current dividend yield of 0.92%.

Momentum - Sonic Innovations, Inc. (Nasdaq: SNCI)

Sonic Innovations, Inc. is still feeling the glow from its Feb 1 earnings report. SNCI reported earnings per share of three cents, marking a 200% positive surprise above analysts' consensus estimates. The stock made a new 52-week high on Wednesday with much heavier-than-normal trading volume. Given the growing volume and new price action, it is obvious that the company's stock price has yet to reflect the improved operating environment.

Value - Ceradyne, Inc. (Nasdaq: CRDN)

Ceradyne, Inc. is up over 36% since last highlighted as a Value pick on Oct 4. On Jan 9, the company announced preliminary record financial results for both the fourth quarter and full year of 2006. Over the past 16 quarters, CRDN surprised to the upside on 15 occasions. Earning per share are projected to grow 15% over the next 3-5 years. The company's return on equity, a common measure of profitability, absolutely crushes that of the industry average--36% compared to 5%. Its PEG ratio currently sits at 0.77.

Truly taking advantage of the Zacks Rank requires the understanding of how it works. The free special report, "Zacks Rank Guide: Harnessing the Power of Earnings Estimate Revisions," provides an insightful background about this wealth-building tool. Download your free copy of the report now to prosper in the years to come by visiting http://at.zacks.com/?id=93.

About the Zacks Rank

Since 1988, the Zacks Rank has proven that "Earnings estimate revisions are the most powerful force impacting stock prices." A $10,000 investment in the Zacks Rank list made in 1988 would now be worth $1.77 million - equivalent to a 31.8% annualized return! During the 2000-2002 bear market, Zacks #1 Rank stocks gained 43.8%, while the S&P 500 tumbled 37.6%. Also note that the Zacks Rank system has just as many Strong Sell recommendations (Rank #5) as Strong Buy recommendations (Rank #1). Since 1988, Zacks Rank #5 stocks have underperformed the S&P 500 by 143.6% annually (+4.8% vs. +11.8%). Thus, the Zacks Rank system allows investors to truly manage portfolio trading effectively.

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