Stockpickr Lists: Autodesk

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 Highs: Autodesk(ADSK Quote), which makes computer-aided design software for architects and engineers, improved 2.1% Tuesday after Securities and Exchange Commission reports revealed directors exercised options. Shares of the California-based company climbed 96 cents, reaching a 52-week high of $45.79.

Biggest % Gainers: Generex Biotechnology(GNBT Quote) climbed 43% after Rodman & Renshaw, a New York-based investment bank, initiated coverage on the company with an outperform rating and a $6 price target. "Our analysis indicates that Generex's oral insulin, Oral-lyn, could be a significant player in the non-injectable insulin market," the company said. Shares of the Toronto-based company added 54 cents closing at $1.80.

52-Week Lows: Dean Foods(DF Quote), a Dallas food and beverage company, plunged to a 52-week low of $31.07 on Tuesday, after the company warned its full-year results likely will not meet expectations. The company blamed rising raw milk prices and an oversupply of organic milk for lower profits. Shares dropped 4.3%, or $1.39.

Biggest % Losers: Uranium enrichment company Usec(USU Quote) dropped 12% Tuesday after The New York Times reported it was struggling for survival. The stock slid $2.55 to $19.24.

Rising on Unusual Volume: Financial services company Life Partners Holdings on Tuesday increased 2.2% on 158% average volume. Due to continuing growth in the life settlement market, the company announced another consecutive quarter of solid earnings. For the day, Life Partners shares increased 56 cents closing at $26.22.

Latest-Activist-Situations: Investment Technologies(ITG Quote) increased 7.3% after an SEC filing revealed hedge fund D.E. Shaw, a 6.2% shareholder, feels the board should evaluate strategic alternatives, including a sale of the business or an aggressive share buyback. Shares of the electronic-brokerage firm added $2.86 on the news, closing at $42.30.

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