Samsung BioLogics

Shares of Samsung Biologics declined as much as 3.3% in Seoul on Monday. PolyPeptide shares jumped as much as 5.6%

Contract drugmaker Samsung BioLogics is the third-biggest firm of its kind in the world by market share, and one of the South's 10 most valuable companies

Shares in the $30 billion company, an affiliate of technology giant Samsung Electronics Co Ltd, plunged almost 20 percent amid suspicion it breached accounting rules to inflate its net profit