MINYANVILLE ORIGINAL Due to options expiration forces trading was erratic throughout the day. Early on the S&P 500 peaked into positive territory but was quickly met with selling pressure as industrial production and capacity utilization figures showed a severe slowdown despite the effects of Hurricane Sandy. Also in the morning data on foreign purchases of US securities was reported. The data which is from September showed heavy foreign buying in US equities and net selling in Treasuries. Typically foreign buyers especially official sources are heavy buyers of US Treasuries. Foreign buyers purchased $23.81 billion in stocks and were net ...