NEW YORK (

TheStreet

) --

Rambus

(RMBS) - Get Report

shares soared 15.1% to $8.43 Friday after it reached an agreement with

Broadcom

(BRCM)

over the use of patents.

The five-year patent agreement covers the use of Rambus patents used by Broadcom in its integrated circuit products. In addition, both companies have settled all previous outstanding claims.

Sina

(SINA) - Get Report

shares were up nearly 4% to $55.70 as rumors continued for a second day that Russian venture capital firm Digital Sky Technologies has invested in the company.

Sina owns a Weibo, a site similar to Twitter, which allows users to post messages of 140 characters.

Shares have fallen from a high of $147.12 earlier in the year to current levels, and are down 19.2% year to date.

Shutterfly

(SFLY) - Get Report

shares were sharply lower, off 5.3% to $23.77, after the photo sharing Web site

cut fourth-quarter revenue guidance.

The company said it expects fourth-quarter revenue to be between $259 million and $264 million. It previously saw revenue coming in at a range of $270.5 million to $275.5 million.

Analysts polled by Thomson Reuters expect revenue of $267.8 million.

Tech stocks were generally rising Friday, with the

Nasdaq

up 12 points, as

durable goods surged

in November, led by orders for transportation equipment.

--

Written by Chris Ciaccia in New York

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