Yield: Yield is a measure of the annual return on an investment.
Fixed Income Security: Fixed Income Security is a security whose nominal (or current dollar) yield is fixed or determined with certainty at the time of purchase, typically a debt security.
High: High is the highest price of the day for a particular futures or options on futures contract.
Long: Long Futures trader is a trader who has bought futures contracts or options on futures contracts or owns a cash commodity. Long position (long trading) is opposite to Short position (Short trading).
Lot: Lot is a unit of trading. There are several Lot types: Even Lot, Job Lot, and Round Lot.
Maturity: Maturity is a period within which a futures contract can be settled by delivery of the actual commodity.
Short: Short (shorting) is the selling side of an open futures contract.
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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.