Today: A quiet holiday kicks off a busy week for Silicon Valley technology companies, as earnings are expected from some of the tech world's most important companies.

Important tech earnings report due every day this week

Monday's quiet MLK Day holiday, when U.S. markets were closed and all eyes were on President Barack Obama's inauguration, provided the quiet before a storm of important earnings reports this week in Silicon Valley. Here's a breakdown of the most important earnings reports expected this week.

(FILES) The Apple logo is seen in this September 11, 2012 file photo at the Yerba Buena Center for Arts in San Francisco.    KIMIHIRO
(FILES) The Apple logo is seen in this September 11, 2012 file photo at the Yerba Buena Center for Arts in San Francisco. KIMIHIRO HOSHINO/AFP/GettyImages (KIMIHIRO HOSHINO)

Google (GOOG) -- The Mountain View search giant kicks off the week Tuesday, releasing earnings after markets close. At least, the company hopes that happens this time: The report for the previous quarter was accidentally filed hours early by contractor RR Donnelley, and Google's stock price plummeted in the middle of the trading session as the numbers did not live up to expectations. Google, not known for communicating well with Wall Street analysts, did its part to push down projections for the final three months of 2012, releasing a blog post late last week reminding analysts that they cannot count revenues and profits from the Motorola Home division of Motorola Mobility in its returns because they have agreed to sell the business. As of Monday afternoon, analysts on average expected Google to announce revenues of $12.3 billion and profits of $8.54 per share, according to Thomson Reuters; on the same basis in the third quarter, Google reported profits of $6.53 a share on revenues of $11.5 billion. IBM will also report earnings Tuesday, as will Sunnyvale semiconductor company Advanced Micro Devices, which follows rival Intel's (INTC) report issued last week.

Apple (AAPL) -- One day after Google's release comes the biggest earnings report of the quarter, the Cupertino tech giant's announcement of its holiday-quarter results. The same report last year left mouths agape, as big sales of consumer devices gave Apple record earnings for a tech company and helped push it to the top market capitalization in the world. The company's numbers from that quarter: $13.06 billion in profits, or $13.87 a share, on $46.3 billion of revenue. Despite the records set in that quarter -- and the fact that the 2012 holiday quarter was one week shorter -- analysts still expect Apple to set a new revenue record and challenge its profits number from last year. According to Thomson Reuters, analysts on average expect Apple to report $54.7 billion in revenue for profits of $13.47 a share. However, just like Apple's share price of late, analysts are all over the place attempting to predict Apple's quarterly performance; for example, predictions for iPhone sales in the quarter, as tracked by Fortune reporter Philip Elmer-DeWitt, range from 43 million all the way up to 63 million, a very wide split despite all predictions surpassing the iPhone sales total from the 2011 holiday quarter, 37 million. Nominee for the most overlooked earnings report of the quarter: Mountain View's Symantec, which also releases earnings Wednesday.

Microsoft -- After a year that saw personal-computer sales dip from the previous year for the first time in half a decade, Microsoft's report will command much attention on Thursday. It is the company's first earnings release to include license sales for its new operating system, Windows 8, since Microsoft pushed all presales of the software forward to this earnings report. Since the company has not released much data on sales of Windows 8 or its new tablet offering, the Surface, Thursday's earnings report could provide the strongest evidence yet for a rebirth of Microsoft or a complete flop of its new offerings. Analysts expect earnings per share of $0.75 on revenues of $21.6 billion. Also announcing earnings Thursday will be Sunnyvale networking company Juniper.

Netflix (NFLX) -- The week of earnings fun ends with the Los Gatos video-on-demand company, which has challenged Apple for the title of most volatile stock in the past year-plus. After a noteworthy quarter that included a groundbreaking deal with Disney and a significant investment from Carl Icahn, Netflix is expected to announce a loss as it continues to spend heavily on international expansion of its streaming service. On average, analysts expect Netflix to report a loss of 62 cents a share using generally accepted accounting practices, on revenues of $934.4 million.

While those companies will dominate the headlines this week, earnings season doesn't end there: The next week kicks off with a report from Yahoo (YHOO), with Facebook to follow later in the week. For live coverage of this week's earnings reports and the accompanying conference calls with company executives, go to www.siliconvalley.com after the markets close.

Silicon Valley tech stocks

Markets closed for MLK Day.

Check in weekday afternoons for the 60-Second Business Break, a summary of news from Mercury News staff writers, The Associated Press, Bloomberg News and other wire services. Contact Jeremy C. Owens at 408-920-5876; follow him at Twitter.com/mercbizbreak.