The Night Watch: Juniper's Warning Keeps a Lid on Tech After Hours - TheStreet

The Night Watch: Juniper's Warning Keeps a Lid on Tech After Hours

After an earnings warning that sent networkers plunging, tech stocks stayed flat to low.
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Technology stocks were flat to lower on a quiet evening of extended trading.

Shares of

Juniper Networks

(JNPR) - Get Report

, which issued a preannouncement today, lost 2 cents to $38 on

Island

ECN, an electronic trading platform. Earlier, Juniper warned that its second-quarter revenue would come in around $200 million to $210 million, compared to its previous guidance of $300 million to $330 million. The stock plunged $8.61, or 18.5%, in the regular session.

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The news jolted other networking stocks today; the

American Stock Exchange Networking Index

fell 18.7%. But some of its components were rising ever-so-slightly after the closing bell. On Island,

Cisco

(CSCO) - Get Report

advanced 8 cents to $20.57 and

JDS Uniphase

(JDSU)

increased 2 cents to $16.07. Storage switch-maker

Brocade Communications

(BRCD)

climbed 2 cents to $45.11.

After a technical glitch shut down trading on the

New York Stock Exchange completely for more than an hour this morning, volume was low today. And it didn't pick up much in extended trading, as Friday nights are typically quiet on the after-hours market.

Other tech issues advanced slightly: On Island,

Ciena

(CIEN) - Get Report

edged up 6 cents to $56.20,

Sun Microsystems

(SUNW) - Get Report

rose 7 cents to $17.08. Additionally,

NetZero

(NZRO)

-- which announced plans to merge with rival

Juno Online

(JWEB)

yesterday -- increased 3 cents to $1.20.

Island ECN offers trading, mainly in Nasdaq-listed stocks, from 7 a.m. to 8 p.m. EST.

Confused?

TheStreet.com

explains how the rules change when the sun goes down in Investing Basics: Night Owl, a section devoted to after-hours trading.