We'll need to take up references <a href=" http://xnxx.in.net/xnnx/ ">xnnx.com</a>  Omarova and Joshua Rosner, managing director at independent research firm Graham Fisher & Co., argue that traders at banks that own physical commodities businesses have a natural incentive to use inside knowledge gleaned from their co-workers to reap profits from trades of derivatives tied to the underlying commodities.