On a generally up day for stocks, some of the most beaten up names in tech were getting a boost.

Semiconductors, networking stocks and dot-coms were on the rise, continuing to add to gains that have lifted many of these companies throughout April. Some of the biggest gains today were in companies that help other companies have an online presence. The

American Stock Exchange Internet Infrastructure Index

was recently up 6.9%. All but one of its components was gaining.

BroadVision

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was up 18% to $6.52 on news retailing giant

Wal-Mart

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will use its products for e-commerce.

Other infrastructure stocks posting strong gains this afternoon include

Akamai

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,

BEA Systems

( BEAS),

E.Piphany

( EPNY),

Inktomi

(INKT)

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and

Vignette

( VIGN).

"These stocks have been beaten down so much -- fast-forward to a year from now, some of these companies are still going to be around," Tony Cecin, head of equity trading at

U.S. Bancorp Piper Jaffray

said of networking and Internet infrastructure stocks.

"I think the market becomes a self-fulfilling prophecy," said Matt Johnson, head of U.S. Nasdaq trading at

Lehman Brothers

. "The further up it goes, the more belief there is that a bottom's been put in."

Today's gains follow a rally on Friday that was fueled by GDP numbers showing the economy grew more quickly in the first quarter than had been anticipated. "I don't think anything fundamentally has changed," he said. The rally "is because the earnings decline has slowed or stopped, and that's what's driving the market."

Among other gainers were the

Philadelphia Stock Exchange Semiconductor Index

was gaining 5.3%, the

Morgan Stanley High-Technology 35 Index

was rising 3.1%, the

American Stock Exchange Networking Index

was adding 5.3% and

TheStreet.com's

Internet Sector Index

was up 5.9%.