Thursday's Late Winners & Losers

Qualcomm and Broadcom feel the effects of a Federal Trade Commission ruling.
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Stocks edged higher postclose Thursday after finishing the regular session deeply in negative territory, with tech names dominating the news on both sides of the coin.

Two heavily traded winners emerged from the Federal Trade Commission's

decision to ban

some

Qualcomm

(QCOM) - Get Report

3G chip and cell-phone imports that infringe on a

Broadcom

(BRCM)

patent. Qualcomm shares added 2.4% to $42 because the ban doesn't include phone models that are already on the market, while Broadcom gained 1% to $30.42.

Also trading actively after the bell was

National Semiconductor

(NSM)

, which leapt 10.7% to $28.55 on two shots of positive news. The Santa Clara, Calif., firm posted income of $90.1 million, or 28 cents a share, for the quarter ended May 27 --

a nickel over

Thomson Financial's mean target. The firm also added another $2 billion to its share-buyback authorizations, with three-quarters of it to be repurchased on an accelerated basis.

Advent Software

(ADVS)

, an investment-management-software company based in San Francisco, said that South Africa's Rand Merchant Bank licensed its Geneva product "to serve as the platform for launching a new prime brokerage initiative." Advent shares lately climbed 2.7% to $35.96.

On the other hand,

Quality Systems

(QSII)

sank after its per-share profit for the fiscal fourth quarter, at 31 cents a share, was 3 cents below consensus despite gaining 3 cents on last year. Shares of the Irvine, Calif., health-care information-systems company were down 1.2% to $40.50 in recent late trading.

Elsewhere in the tech sector, software developer

Openwave Systems

(OPWV)

shed 1.6% to $8.21 on word 13% holder Harbinger Capital Partners reduced its May offer to buy another 49% of the company's shares. The bid -- which has already been

rejected

by Openwave's board -- was cut by $1.20 a share to $7.10 in order to account for the company's recent dividend of that same amount, pursuant to a rule previously established in the offering. Harbinger also extended the offer's deadline by a couple of days to June 21.

And chipmaker

Xilinx

(XLNX) - Get Report

saw wobbly trading after saying fiscal first-quarter sales should

lean to the low end of prior guidance

, which had called for sequential growth of 1% to 5%, or $447.9 million to $465.6 million. Analysts are seeking $461.3 million. The San Jose, Calif., company was lately dipping 2 cents at $27.45.