The stock market's relentless repricing of Internet stocks landed Washington's most prominent "Netizen" on the list of stock market losers last week.

Shares in America Online Inc., which have been slipping steadily for the past two months, fell to $99.50 a share from $118 and now are off 43 percent from their April 6 high of $175.50 a share.

Stocks of other Internet giants fell last week, but not as much. Smaller online companies in the Washington region suffered less -- such as PSINet Inc. of Herndon, the shares of which were down about 10 percent.

Lockheed Martin Corp., the region's biggest high-technology company, was hammered. Its shares fell after the company surprised investors by saying it would post a loss for the second quarter and by lowering its profit targets for the next two years.

The hits taken by the big tech stocks drove down The Washington Post-Bloomberg regional stock index, which has been moving erratically for the last two months. The index closed at 168.79, compared with 171.6 last week.

The week's most significant winners were Richfood Holdings Inc. of Richmond and American Mobile Satellite Corp. of Reston.

Richfood, which owns the Shoppers Food Warehouse stores in the Washington area, agreed to be acquired for $18.50 a share by SuperValu Inc. of Minneapolis, the nation's largest food distributor.

American Mobile, which is building a system to broadcast compact-disc-quality radio programs nationwide, signed a deal with General Motors to equip GM cars with special radios to receive the broadcasts.

That transaction also helped lift the shares of LCC International Inc. of McLean, which won a contract to help design and build American Mobile's satellite radio system.