MAP Pharmaceuticals Inc. (Nasdaq:MAPP), Origin Agritech Ltd. (Nasdaq:SEED) and AgFeed Industries Inc. (Nasdaq:FEED) are among the most actively traded companies in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Star Bulk Carriers Corp. (Nasdaq:SBLK), Take Two Interactive Software Inc. (Nasdaq:TTWO), Tessera Technologies Inc. (Nasdaq:TSRA), Century Aluminum Co. (Nasdaq:CENX), Canadian Solar Inc. (Nasdaq:CSIQ) and Vanda Pharmaceuticals Inc. (Nasdaq:VNDA).

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