By Benjamin Pimentel, MarketWatch

SAN FRANCISCO (MarketWatch) -- Shares of Amazon.com Inc. touched a new high Friday as the company unveiled an expanded deal with NBC Universal and as speculation about a new tablet continued.

But the technology sector took a hit from shares of Autodesk Inc. (ADSK), which plunged, sustaining the worst drop within the S&P 500 Index (SPX) after the design-software firm's disappointing results left investors stunned.

Autodesk shares shed 15.6% to close at $30.13.

Late Thursday, Autodesk missed revenue forecasts for the second quarter of fiscal 2013 and cut its outlook in what Jefferies & Co. analyst Ross MacMillan called "a big step back."

"In a surprise to us, Autodesk missed Street revenues by 4%, blaming execution and soft demand," MacMillan said.

On the other hand, shares of Amazon.com (AMZN) closed up 1.9%, to $245.74, after the stock hit a record high of $246.87.

The online megaretailer said Friday that it has expanded a partnership with NBC Universal, allowing Amazon to offer more video content. The company also sent out media invitations Thursday for a big event in Southern California in two weeks. Analysts suggest that Amazon was rolling out a new version of the Kindle Fire tablet.

Amazon stock have risen more than 40% this year.

The tech sector managed to bounce back from early losses. The Nasdaq Composite Index (RIXF) rose 0.5% to close at 3,070, although the benchmark ended the week down a fraction.

The S&P 500 (SPX) also gained a fraction but was off slightly for the five-day period

Among the notable gainers were shares of Aruba Networks Inc. (ARUN), which jumped 14.4% to close at $19.36 after the networking company reported upbeat third-quarter results and issued a better-than-expected forecast.

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