By Rex Crum

SAN FRANCISCO (MarketWatch) -- Tech stocks put in a roundly disappointing performance Tuesday, led by losses from Apple Inc. and IBM Corp., and the sector also felt some impact from a broad market retreat spurred on by losses reported by one of the nation's banking giants.

Apple (AAPL) cut its losses, but still closed they day down by $8.51 a share, or 2.7%, at $309.49 after reporting late Monday a fiscal fourth-quarter profit of $4.31 billion, or $4.64 a share, on revenue of $20.34 billion. During the same period a year ago, Apple earned $2.53 billion, or $2.77 a share, on $12.2 billion in sales.

The results exceeded the consensus estimates of analysts surveyed by FactSet Research. However, Apple said its gross profit margins fell to 36.9% from 41.8% in the year-ago period, and its iPad sales of 4.2 million units was shy of what many analysts had estimated.

"[Apple's] margins are clearly in a down trend, but should get some help from component costs and iPhones next quarter," said Kevin Hunt, of Hapaolim Securities, in a research note. Hunt holds a buy rating and $325-a-share price target on Apple's stock.

IBM (IBM) also took a hit as its shares fell $4.80, or 3.7%, to $138.03. Late Monday, IBM posted a third-quarter profit that rose 12% from a year ago, and also raised its earnings outlook for all of 2010 to "at least" $11.40 a share. However, IBM said signings of new services contracts fell 7% from a year ago to $11 billion during the quarter.

VMware Inc. (VMW) shares fell $5.23, or 6.7%, to $73.12 a day after the virtualization software company reported strong quarterly results, but analysts began to question its growth prospects going forward.

Yahoo Inc. (YHOO) ended the day off by 44 cents a share, or almost 3%, at $15.49 in advance of the Internet company's quarterly report, due after the market close.

Optical networking stocks were bruised following an earnings and sales warning late Monday from Infinera Corp. (INFN) .

Infinera said it expects to earn 2 cents to 5 cents a share on sales in a range of $115 million to $120 million. However, analysts surveyed by Thomson Reuters had earlier forecast Infinera to earn 11 cents a share on $132.5 million.

That forecast sent Infinera's shares down $4.38, or 35.5%, to close at $7.95. Other optical networkers were punished as well, with Ciena Corp. (CIEND) shares falling almost 7%, Finisar Corp. (FNSR) giving up 11.6%, JDS Uniphase Corp. (JDSUD) ending the day with a loss of 6% and Alcatel-Lucent (ALU) down by 5%.

Other losses came from Microsoft Corp. (MSFT), Oracle Corp. (ORCL), Hewlett-Packard Co. (HPQ), Google Inc. (GOOG) and Cisco Systems Inc. (CSCO).

EMC Corp. (EMC) posted one of the few gains, and even that was miniscule. The data-storage technology company's shares rose 3 cents to close at $20.83 following its quarterly results, which came out before the market opened. The data-storage technology company reported a 58% increase in its quarterly earnings.

The Nasdaq Composite Index (RIXF) fell more than 43 points, or 1.8%, to close at 2,436, while the Philadelphia Semiconductor Index (SOX) fell 1.4% and the Morgan Stanley High Tech 35 Index (MSH) shed 1.6%.

The sector also felt some of the broad-market losses brought on by reaction to Bank of America Corp. (BAC) reporting wider net loss from the year-ago period. The banking giant said that for its third quarter it lost $7.3 billion.

 
 
 
 
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