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 % Losers

:

American Home Mortgage

( AHM) plummeted 90%, after the company said it can no longer fund home loans and may liquidate assets, putting the future of the company in doubt. The REIT sunk $9.43 Tuesday to $1.04.

52-Week Lows

:

NovaStar Financial

( NFI) continues to reach new lows, as it sunk 25% on Tuesday. The Kansas City-based subprime mortgage lender's stock reached trading volume of 4.7 million shares Tuesday, nearly five times its three-month average of 970,000 shares. Shares lost $3.29, bottoming out at $9.64.

Biggest % Gainers

:

Cambridge Display Technologies

(OLED) - Get Universal Display Corporation Report

rocketed 89% Tuesday, after Japan's Sumitomo agreed to buy the Britain-based company for $12 a share, or $285 million, representing a hefty premium in an all-cash deal scheduled to finalized during the third or fourth quarter. The LED maker closed up $5.47 to $11.62.

52-Week Highs

:

Faro Technologies

(FARO) - Get FARO Technologies, Inc. Report

jumped 23% to a 52-week high after the Florida-based company posted outstanding second-quarter earnings that beat last year's numbers by 600%. The company, which makes computerized measurement devices, saw earnings of 39 cents a share or $5.8 million. Shares closed up $7.02, reaching $37.23.

Rising on Unusual Volume

: Shares of

Under Armour

(UA) - Get Under Armour, Inc. Class C Report

were trading at almost five times their three-month average volume Tuesday, sending the athletic apparel company up 11.2%. The Baltimore-based company reported a second-quarter net income increase of 135.6% to $5.7 million, from $2.4 million in the prior year. The stock jumped $6.23 reaching $61.41.

TheStreet Recommends

Stocks with Unusual Option Activity

:

Armor Holdings

(AH)

was experiencing unusual option activity. Shares closed up 8 cents at $87.98.

Latest Activist Situations

: Nelson Peltz's Trian Fund, a 9.8% holder of

Wendy's

(WEN) - Get Wendy's Company Report

, said in a letter filed with the

Securities and Exchange Commission

it would be prepared to offer between $37 to $41 per share to Wendy's shareholders. The hamburger chain's shares climbed $1.34, or 4%, to $35.03.

Forum of the Day

BFX opens a discussion about

earnings plays

.

Do You Know the Answer?

Like many investment bank stocks,

Goldman Sachs

(GS) - Get Goldman Sachs Group, Inc. (GS) Report

has been in a freefall lately.

Where do people think the stock will end up by the end of the year,

asks AHN.

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