Monday's Winners & Losers: Thornburg Mortgage

Thornburg Mortgage (TMA Quote) shares were in a free fall, losing 51.5% to $4.32 after announcing that additional margin calls may strike a coup de grace to the ailing Santa Fe, N.M., mortgage lender. Fellow mortgage bank IndyMac (IMB Quote), which is based in Pasadena, Calif., was also off today, down 20% to $4.92.

Stereotaxis(STXS Quote) plunged 32% after the cardiology-product company reported that its fourth-quarter loss doubled, worse than expectations. The company posted a loss of $12.2 million, or 36 cents a share, widened from $6.1 million, or 18 cents a share in the year-ago quarter. Revenue for the quarter fell to $10.3 million from $14 million, due to a delay in the European and FDA approvals for its magnetic irrigated catheter.

Analysts surveyed by Thomson Financial expected a loss of 31 cents a share on revenue of $10.3 million. Shares of Stereotaxis tumbled $1.84 to $3.94.

Shares of Finish Line (FINL Quote) jumped 40.3% to $3.97 on news that the Indianapolis-based shoe retailer would settle its merger dispute with fellow footwear purveyor Genesco (GCO Quote). Shares of Nashville-based Genesco plunged 17.3% on the news.

Array BioPharma(ARRY Quote) jumped 19% after the company announced positive midstage data on an oral drug for patients with post-surgical dental pain. The company said the drug, ARRY-797, achieved its primary and secondary endpoints in the phase II study.

Array now plans a second phase II study in acute inflammatory pain comparing various doses to placebo and to Pfizer's (PFE Quote)Celebrex. The company also will begin a phase II trial on the drug in ankylosing spondylitis, a chronic inflammatory disorder. Shares of Array rose 87 cents, or 16%, to $6.47.

Robotics maker iRobot(IRBT Quote) gained 58 cents, or 3.2%, to $18.90 after the company said it has received a grant from the Defense Advanced Research Projects Agency to develop a small portable communications relay robot.

Shares of Apple(AAPL Quote) were down $3.29, or 2.6%, to $121.73 after two analysts lowered their price targets for the stock. An analyst at Banc of America Securities cut his price target for Apple to $160 from $180, while another analyst at RBC Capital Markets lowered his target to $175 from $200.