Arbitrage: Arbitrage is the simultaneous purchase and sale of similar commodities in different markets to take advantage of a price discrepancy. In more detail, Arbitrage is a strategy that involves the simultaneous purchase and sale of identical or equivalent commodity futures contracts or other instruments across two or more markets in order to benefit from a discrepancy in their price relationship. In a theoretical efficient market, there is a lack of opportunity for profitable arbitrage.
Low: Low is the lowest price of the day for a particular futures or options on futures contract.
Trader: Trader is a merchant involved in cash commodities or a professional speculator who trades for his own account and who typically holds exchange trading privileges.
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Naked options trading is very risky - many people lose money trading them. It is recommended contacting your broker or investment professional to find out about trading risk and margin requirements before getting involved into trading uncovered options.