Tech Winners & Losers: Yahoo!

Yahoo! shares rose after it announced it some new advertising partnerships.
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Updated from 2:50 p.m. EDT with new stock prices

Tech stocks were up Wednesday led by chip companies including

AMD

(AMD) - Get Report

, which unveiled a new package of chips designed for notebooks.

Yahoo!

(YHOO)

was up 72 cents, or 2.8%, to $26.87 after the company unveiled

new advertising partnerships

with companies such as

Wal-Mart

(WMT) - Get Report

and

CBS

(CBS) - Get Report

among others. Meanwhile, activist investor Carl Ichan is reportedly seeking to oust Yahoo CEO Jerry Yang.

Digital infrastructure services provider

VeriSign

(VRSN) - Get Report

rose $2.28, or 5.7%, to $42.18 after an analyst at Stifel Nicolaus raised his price target on the stock to $50.

Fundamental trends for VeriSign's core business remains strong with growth in the company's domain registry unit remaining healthy, said the analyst. Divesture of some of company's business should also result in a much more attractive top-line said the analyst in a note.

AMD

(AMD) - Get Report

gained 39 cents, or 5.7%, to $7.20 after the company

unveiled

a new group of chips, named Puma, specifically designed for notebooks. The move represents AMD's most concerted effort to enter the growing market for mobile PCs.

Xilinx

(XLNX) - Get Report

rose 92 cents, or 3.4%, to $27.84 after the company said it

will cut

7% of its workforce in a bid to improve its operating performance.

Programmable chips maker

Altera

(ALTR) - Get Report

was up 65 cents, or 2.9%, to $23.54 after it offered a

strong mid-quarter update

Tuesday and said it expects sales to hit the high-end of its initial forecast. In April Altera forecast that revenue for the current quarter in the range of $339.5 million and $349.5 million.

Tibco

(TIBX)

shed 60 cents, or 7.8%, to $7.12 after the company said second-quarter profit would

fall short

of expectations.

The company said EPS, excluding special items, would be 5 cents or 6 cents, vs. analysts' estimates for 8 cents. Revenue during the quarter is likely to range between $147 million and $149 million. Analysts were expecting a top line of $154.1 million.