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

52-Week Lows

:

Office Depot

(ODP) - Get Report

fell 3.5% Monday after Credit Suisse cut 2007 EPS estimates to $2.15 from $2.27. Credit Suisse blames the poor outlook on no near-term catalyst, and value realization taking longer to develop. The business-supplies retailer closed down $1.17 to $32.32.

Biggest % Losers

:

U.S. Energy Systems

(USEY)

shares plunged 44% after its board suspended the CEO of British subsidiary UK Energy Systems and warned it could be forced to file for bankruptcy. The stock closed down $1 Monday to $1.27.

Biggest % Gainers

:

US Xpress Enterprises

(XPRSA)

surged 33% Monday after the trucking company was offered to be taken private by top executives. Wachovia analyst Justin Yagerman believes the trucking industry as a whole will rise "due to continued interest by private money." US Xpress closed up $4.74 to $18.94.

52-Week Highs

:

America First Apartment Investors

(APRO)

jumped to a 52-week high Monday after the REIT agreed to be acquired by an affiliate of Sentinel Real Estate. The $523 million deal for $25.30 a share pushed shares upward 11% to $24.99.

Rising on Unusual Volume

:

Omniture

(OMTR)

added 8.3% as shares traded at five times average volume, after rumors surfaced the company could be bought. On Monday, the Internet-related advertising company closed up $1.73 to $22.39.

Latest Activist Situations

: In a 13D filing Monday afternoon, J. & W. Seligman disclosed a 5.2% stake in

Catalyst Semiconductor

(CATS) - Get Report

. The firm said the shares of the company are significantly undervalued, and said in order to increase shareholder value, the company should buy back 1 million to 2 million additional shares. The stock closed flat at $4.23.

Forum of the Day

Trading Nymph opens discussion on

Cliff Mason and his "marriage for profit" idea

.

Do You Know the Answer?

Does

Darden

(DRI) - Get Report

come back in the near future?

asks sswillyh

.

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