Seaboard Corporation (NYSEAMERICAN:SEB - Get Free Report) passed below its 200-day moving average during trading on Thursday. The stock has a 200-day moving average of $4,652.18 and traded as low as $3,750.00. Seaboard shares last traded at $3,863.58, with a volume of 12,373 shares trading hands. Seaboard Trading Up 2.3% The company's 50 day moving