Glossary |
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Uncovered Call Option Writing
A short call option position in which the writer does not own an equivalent position in the underlying security represented by their option contracts. Risk, in this case, is unlimited as the price of the underlying asset has no upside limit.
Uncovered Put Option Writing
A short put option position, in which the writer does not have a corresponding short position in the underlying security or has not deposited, in a cash account, cash or cash equivalents equal to the exercise value of the put. Risk, in this case, is limited to the price of the underlying falling to zero.
U.S. Treasury Bill
A short-term U.S. government debt instrument with an original maturity of one year or less. Bills are sold at a discount from par with the interest earned being the difference between the face value received at maturity and the price paid.
U.S. Treasury Bond
Government-debt security with a coupon and original maturity of more than 10 years. Interest is paid semiannual basis via its coupon.
U.S. Treasury Note
Government-debt security with a coupon and original maturity of one to 10 years. Interest is paid via its coupon.
Variation Margin
A variable margin payment that is made by clearing members to their respective clearing houses based upon adverse price movements of the futures contracts that these members hold.
Vertical Spread
Buying and selling puts or calls of the same expiration month but different strike prices.
Volatility
A measure for the change in price over a given time period. It is often expressed as a percentage and computed as the annualized standard deviation of percentage change in daily price.
Volume
The number of shares or contracts traded in a security or an entire market during a given period of time. It is simply the amount of shares that trade hands from sellers to buyers as a measure of activity. If a buyer of a futures contract purchases 100 contracts from a seller, then the volume for that period increases by 100 contracts based on that transaction.
