Midday Gainers

NephroGenex Inc. NRX +230% - After hours Tuesday the company announced positive results from the QT study of Pyridorin.

RedHill Biopharma Ltd. ADR RDHL +48% - Shares are higher on Wednesday following the company’s announcement that the United Kingdom has validated its marketing authorization application for its Bekinda drug.

Meadowbrook Insurance Group Inc. MIG +19% Fosum International Announced they will acquire Meadowbrook for $8.65 per share or $433 million.

Cytokinetics Inc. CYTK +19% - Shares continue higher following a price target increase to $18 per share by Roth Capital analysts.

Tekmira Pharmaceuticals Corporation TKMR +13% - On Wednesday, the company provided an update on its TKM-PLK1 Phase I/II clinical study.