Market Update

Shares of Sigma-Aldrich Corp SIAL dropped about 0.5% after the company reported that it has acquired biomedical supplier Research Organics Inc. The terms of the deal were not undisclosed. Shares of Comverse Technology Inc CMVT fell about 4.4% after the company reported a decline in its fourth-quarter profit. Comverse Technology's quarterly profit dropped to $4.48 million, or $0.02 per share, from $15.43 million, or $0.07 per share, in the year-earlier period. Its adjusted profit came in at $0.14 per share. Comverse Technology's revenue fell to $405.46 million from $430.84 million. However, analysts were expecting earnings of $0.14 per share on revenue of $421.9 million. Shares of The Ensign Group Inc ENSG fell about 0.6% after the company announced that its subsidiary has bought Zion's Way Home Health and Hospice, a well-regarded home health and hospice agency based in St. George, Utah. Shares of EntreMed Inc ENMD fell about 0.9% after the company named Dr. Ken K. Ren as interim Chief Executive Officer, effective as of April 2, 2012.