Odyssey HealthCare was up after the hospice-care company was upgraded by Deutsche Securities to buy from hold. Noting that the company is in the middle of a turnaround, analysts said "we believe (the company's) operational strategy is fundamentally stronger and new senior management should be able to deliver on better (year-over-year) results."

Shares of Odyssey gained $1.31, or 8%, to $17.72.

American Railcar Industries ( ARII) slipped after the railcar maker said an April 2 tornado had destroyed part of its Marmaduke, Ark., facility. The tornado also destroyed a nearly completed structure that was to receive inbound material and store inventory.

The company said the clean-up of debris is almost finished. American Railcar expects to begin the reconstruction shortly. Also, Morgan Keegan downgraded the stock to market-perform from outperform. Shares dropped $2.71, or 6.9%, to $36.32.

Industrial Services of America ( IDSA - Get Report), a logistics-management firm that offers waste and recycling services, jumped more than 50% after the company said its first-quarter earnings rose to $416,526, or 12 cents a share, from $149,088 and 4 cents a share last year.

Revenue for the first quarter fell to $14.5 million from $29.7 million last year because of a reduction in management-fee revenue. Shares of Industrial Services were up $2.61 to $7.58.

Rotech Healthcare , a provider of home medical-care services and equipment, was sinking more than 10% after the company's shares were downgraded. CIBC World Markets cut its rating on the stock to sector-underperform from sector perform and said Rotech will probably report a loss for the year.

The downgrade follows an announcement from Rotech last week in which the company said it received Medicare reimbursement payments for compounded budesonide at a lower rate. If the new reimbursement rate is upheld by regulatory authorities, Rotech said it would reduce the company's revenue for 2006 by roughly $30 million and its earnings by 68 cents a share. Shares of Rotech were losing 66 cents to $5.86.

Commerce Energy Group , an electricity and natural gas marketer, said its Commerce Energy of Ohio unit has been chosen as the preferred supplier in the Newton Township Natural Gas Aggregation Program. Commerce is offering an 18-month contract, with a fixed rate of $9.45 per thousand cubic feet of gas for the May through the October meter cycle.

A new rate will be issued in October, which will remain fixed through the remainder of the 18-month program. Shares of Commerce were higher by 17 cents, or 14.4%, to $1.35.

Shares of Cryptologic were losing nearly 7% after research firm Canaccord Adams cut its rating on the company's stock to sell from buy. Cryptologic, a developer of Internet gaming software, was down $1.92 to $26.23.

Tengasco ( TGC - Get Report), an oil and natural gas exploration company, completed an eight-well drilling program on its producing properties in Kansas. The company said the program proved to be highly successful, with seven wells producing or expected to produce commercial quantities of oil.

Tengasco also said its oil production volume in Kansas reached 38,502 barrels in the first quarter. Shares of Tengasco were up 16 cents, or 12.2%, to $1.47.