Stockpickr Lists: RIMM Wins Big

Editor's Note: In this feature from Stockpickr, we highlight lists of stocks that have made new highs, lows or seen other unusual activity.

Biggest % Gainers: Research In Motion(RIMM Quote) soared 21% Friday, after the company reported first-quarter earnings that shattered Wall Street's expectations. The BlackBerry maker announced its quarterly profit grew 73% and boosted its second-quarter guidance. Shares closed up $34.40 to $199.99.

52-Week Highs: Shares of Research In Motion also hit a 52-week high Friday.

Rising on Unusual Volume: Research In Motion was trading at unusually heavy volume, at 420% above its three-month average.

Biggest % Losers: MMC Energy(MMCE Quote) sunk 19% Friday, after the company announced a public offering of 9.1 million shares at $5.50 apiece, a 19% discount to Thursday's close. The New York-based firm was down $1.31 to $5.49.

52-Week Lows: American Home Mortgage Investment(AHM Quote) fell 13% to a 52-week low, after the company said "substantial charges for credit-related expenses" will cause a second-quarter loss. The mortgage investment company also withdrew its prior 2007 earnings outlook of $3.25 to $3.75. Shares tumbled $2.53 to $18.38.

Latest Activist Situations: Mercury Real Estate Advisors disclosed a 9.4% stake in Sonesta International Hotels(SNSTA Quote). The firm also disclosed a letter to Sonesta, applauding the company's move to hire Goldman Sachs to explore strategic options. Shares closed up Friday $1.06, or 3.5%, to $31.50.

Forum of the Day

youngmoney asks, How bullish are you on oil in the short term?

Do You Know the Answer?

Do you think Sears(SHLD Quote) is the next Berkshire Hathaway(BRKA Quote)? asks loschi.

Feeling Lucky?

And finally, try picking a random portfolio suited to do-it-yourselfers with more detailed analysis at I'm Feeling Lucky.