Immucor Inc. (Nasdaq:BLUD), CPI International Inc. (Nasdaq:CPII) and Panhandle Oil and Gas Inc. (Nasdaq:PHX) are among the biggest percentage losers in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Old Second Bancorp Inc. (Nasdaq:OSBC), Digimarc Corp. (Nasdaq:DMRC), Union Drilling Inc. (Nasdaq:UDRL), Penford Corp. (Nasdaq:PENX), Bridgford Foods Corp. (Nasdaq:BRID) and Care Investment Trust Inc. (Nasdaq:CRE).

For access to the full article, you must be a registered member - it's FREE.