Odyssey Healthcare's ( ODSY) rating was upped to buy from hold by a Deutsche Securities analyst, sending the Dallas-based company's shares up $1.17, or 9%, to $14.21. Amcol International ( ACO) reported soaring fourth-quarter profits. Earnings for the quarter totaled $12 million, or 39 cents a share, compared with $8.4 million, or 27 cents a share, a year ago. Excluding a tax-cut benefit of 3 cents a share, income beat estimates by 2 cents a share. Fourth-quarter revenue climbed 16% to $155.9 million from a year ago, which eclipses the $155.1 million projection. Shares were gaining $2.05, or 7.9%, to $28.70. Enterra Energy Trust ( ENT) tumbled after the Canada-based driller halved its monthly dividend to 6 cents a share. Shares were falling $1.26, or 15.5%, to $6.88. Pharmos ( PARS) sank after the biotech announced that its proposed synthetic cannabinoid compound didn't relieve a particular model of induced pain, as compared with a placebo, in midphase testing. The Iselin, N.J.-based company said that the compound, which is chemically related to marijuana, was nonetheless well tolerated. Shares were losing 19 cents, or 10.5%, to $1.62. Irvine Sensors ( IRSN) slid after the Costa Mesa, Calif., chipmaker said it will be late with its 2006 financials, which were due Jan. 18. The company says it will file the results "as soon as possible." Shares were down 9 cents, or 5.5%, to $1.55.