A single, gaudy, neon-drenched casino is a vega. The plural, of course, (a bunch of them together) is known as "Vegas."
Actually, the term “vega” has to do with options pricing. It belongs to a group of measures known as “the Greeks,” so named because each one gets represented by a Greek letter. Collectively, they describe the way option prices move in relation to various other measures.
Vega specifically relates to implied volatility. It measures the amount an option’s price moves in relation to the implied volatility of the option’s underlying asset. A vega of 1.0 means that an option’s price will move $1 when implied volatility moves 1%.
Vega can be positive or negative. Long options have a positive value (so, if you buy a call, you'll experience positive vega). Meanwhile, short options (like selling a call) have negative vega. The amount of time remaining until expiration also impacts vega. The measure will turn negative as expiration approaches.
Example:
You want to buy a call option for 100 shares of GOOG. The call is priced at $2 and implied volatility is sitting at 35%. The option has a vega of 0.30, meaning that a 1% move in volatility will push the price higher by $0.30. So an increase to 36% implied volatility means the GOOG call price would rise to $2.30.
Related or Semi-related Video
Finance: What Is a Call Option?25 Views
finance a la shmoop. what is a call option? option? option, where are you? okay
yeah yeah. not phone options, call options. and a close but no cigar. a call option [man smokes in a tub of cash]
is the right to call or buy a security. the concept is easy the math is hard.
you think Coca Cola's poised for a breakout as they go into the new low
calorie beverage business. their stock is at 50 bucks a share and you can buy a [man stands on a stage as crowd cheers]
call option for $1. well that call option buys you the right
to then buy coke stock at 55 bucks a share anytime you want in the next
hundred and 20 days. so let's say Coke announces its new sugarless drink flavor
zero it's two weeks later and the stock skyrockets to fifty eight dollars a
share. you've already paid the dollar for the option now you have to exercise it. [man lifts weights]
so you buy the stock and you're all in now for fifty five dollars plus one or
fifty six bucks a share and your total value is now fifty eight bucks. well you
could turn around today and sell the bundle that moment, and you'll have
turned your dollar into two dollars of profit really fast. and obviously had the [equation on screen]
stock not skyrocketed so quickly well you would have lost everything. still you
lucked out and now you're sitting on some serious cash, courtesy of your call [two men in a tub of cash]
options. as for Coke flavor zero turned out to be nothing more than canned water.
Up Next
A derivative of a security is a "something" which derives its value based on the performance of that security... either a put option or a call option.
What is a put option? A put option is a type of contract that lets the investor sell shares of a stock at a certain price and within a window of ti...