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What Are Exotic Options? - YouTube
Channel: Patrick Boyle
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Hello, and welcome back to my Youtube channel
where we learn all about derivatives and quantitative
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finance.
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Today we will learn about exotic options,
things like compound options, chooser options,
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gap options, barrier options lookback options,
quantos and many more.
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[MUSIC]
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In todays class we are going to learn all
about exotic options, so I guess the first
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thing I should do is explain what an exotic
option is.
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Simple put and call options or combinations
of them are called “vanilla” or plain
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vanilla options.
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These have standard properties and trade actively.
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The alternatives to these are referred to
as “exotic” options.
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Typically these are over the counter derivatives
and have various nonstandard features.
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Exotics serve market niches including: specific
hedging needs; tax, accounting, legal, or
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regulatory needs; or offer investors unique
payoffs in particular market circumstances
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that are not easily accessible to Investors
were these products not available.
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Nonstandard features include: a hybrid of
American- or European-style exercise capabilities;
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alternative payoffs or payoffs that do not
depend precisely on one strike price; fixed
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payout options above a specified strike price;
or those with a payoff based on the average
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performance of the underlying over the option’s
life.
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If you would like to learn more about this
topic, or derivatives in general, all of these
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classes are based on my book, trading and
pricing financial derivatives.
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There is a link to the book provided in the
description below.
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Bermudan Options
Bermudan options are a cross between American-
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and European-style options.
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They are named Bermudan options because Bermuda
is physically between the U.S. and Europe.
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These options can be exercised on certain
dates during the life of the option, often
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monthly.
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Bermudan options offer the sellers more control
over when an option can be exercised against
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them, and therefore the contract is less expensive
for the buyer than an American-style option,
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but not as inexpensive as a European option
(which only allows exercise at expiration).
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These options can be priced using Binomial
Trees where at particular nodes early exercise
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is a possibility, and at other nodes it is
not.
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Forward Start Option
Forward start options are options that start
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at some point in the future; the exercise
price is typically set at the current price
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at the beginning of the option’s life.
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Employee stock options are an example of a
forward start option.
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The other main purpose of trading them is
to gain an exposure to forward volatility.
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Forward start options can be valued with a
modified version of the Black-Scholes model
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Compound Options
Compound options are options on options: A
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call that enables you to buy another call,
a put on a call, a call on a put, or a put
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on a put.
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The underlying asset of the first option is
simply another option.
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Compound options allow buyers to effectively
implement their strategy with greater leverage
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than one simple direct options position, and
are cheaper at inception than a straight options
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position for the full timeframe.
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However because you make a second payment
when you exercise the first option, the full
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amount of premiums paid on the two options
will be greater than the premium on one option
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for the entire duration.
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Chooser Options
Chooser options allow the buyer, after a specified
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time, to choose if the option is a call or
a put.
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This is particularly attractive if the underlying
is expected to experience significant volatility,
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and potentially in either direction.
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This is riskier than a straddle strategy.
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With a chooser option, you might choose the
call after it has rallied, but by the time
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expiry is approaching, the underlying may
have fallen and you may end the contract out
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of the money, whereas with a straddle, you
have a “live” put and a “live” call
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right up until maturity.
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For this reason, chooser options are cheaper
than straddles.
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Barrier Options
Barrier option payoffs depend on whether the
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underlying hits a certain level, whichh we
call the barrier, before the expiration date.
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These options can either knock-in or knock-out.
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A knock-in option has no intrinsic value until
the underlying touches the barrier price,
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at which point it becomes a vanilla option.
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A knock-out option is like a vanilla option
but if the underlying exceeds the barrier
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price, it becomes worthless.
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There are eight types of barrier options:
they can be up and out, or down and out calls
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or puts; or they can be down and in or up
and in puts or calls.
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Barrier options are path-dependent options
because their value depends on the previous
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prices of the underlying during the life of
the option.
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Barrier options are always cheaper than an
otherwise similar option without a barrier.
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As an example, if you were bullish on Facebook’s
stock over the next 1 year timeframe, but
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were confident that it would not exceed $250
per share over that period, you might be happy
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to buy a one year up and out call option with
a strike around the current price ($150 at
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the time of writing this book) but a knock-out
barrier at $250.
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Hopefully you can see how this has some similarity
to something like a call spread, but this
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payoff is considerably worse [AD LIB]
The Greeks on barrier options behave quite
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differently than those of vanilla options.
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If you compare an up-and-out call option with
a vanilla call option.
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As the stock price moves up, a vanilla call
will increase in value, while an up-and-out
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call is affected by two opposing forces.
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As the stock price moves up, the up-and-out
call's payoff becomes potentially larger just
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like the vanilla call, but the upward move
simultaneously threatens to destroy the value
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of the contract by moving it closer to the
knock out barrier.
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This conflict makes the option value very
sensitive to the stock's movement as it gets
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close to the barrier, and delta can flip rapidly
from positive to negative at these points
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making these options very difficult to hedge.
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Barrier option values can decrease with increasing
volatility, unlike vanilla calls and puts.
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The up-and-out call described above becomes
more likely to get knocked out near the barrier
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as volatility increases.
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Even though the Investor is long volatility
relative to the strike level, they are short
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volatility relative to the barrier.
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Binary Options, also Known as Digital Options
Binary options are discontinuous payoff options.
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An example would be a payoff of X if ST>K,
otherwise 0.
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So the owner of a binary call option would
receive either a 0 payoff or a full, set payoff
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amount if the underlying’s price is above
a pre-set level K, but the payoff does not
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rise if the underlying is well above the strike
K, instead it is a fixed payoff of X (see
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Figure 14.3).
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These are difficult for dealers to hedge well,
particularly when the underlying trades close
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to the strike near maturity.
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Gap Option
A gap option is a type of barrier option where
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the strike making the option exercisable differs
from the strike used to calculate the payoff.
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Gap call options payoff ST–K1 when ST is
greater than K2.
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A modified Black-Scholes formula can be used
to price this style of option.
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Lookback Options
Lookback option payoffs depend on maximums
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or minimums of underlying asset price points
over the option’s life.
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These are path-dependent options that allow
the option owners to “buy at the low”
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or “sell at the high” over the life of
the option.
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The life of the option being from the contract
first being agreed upon through to the expiration
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date.
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There are two types of lookback options: floating-strike
and fixed-strike.
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For floating-strike lookback calls, the exercise
price is the minimum stock price reached over
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the life of the option.
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For floating-strike lookback puts, the exercise
price is the maximum stock price reached over
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the life of the option.
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For fixed-strike options, the strike is fixed
as with a vanilla option but, for fixed-strike
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lookback calls the owner gets to exercise
at the point when the underlying asset price
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is at its highest level over the life of the
option.
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For fixed-strike lookback puts, the owner
gets to exercise at the underlying asset’s
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lowest price over the life of the option.
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While these options sound like you cannot
lose with them, they are of course priced
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in a rational market and are considerably
more expensive than vanilla options.
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Their high prices can be reduced by restricting
the maximums and minimums used in calculating
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the payoffs, and these restricted versions
are known as partial lookback options.
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Asian Options
Asian option payoffs depend on the average
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price of the underlying over the option’s
life, or some part of the option’s life,
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rather than the spot price of the underlying
on the expiration date.
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The average can be calculated as either a
geometric or arithmetic average.
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The primary advantage of Asian options is
that they reduce the potential for singular
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episodes of market manipulation or one-off
unusual price moves to undermine your investment
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thesis, which might have otherwise been accurate.
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Because of the volatility-dampening effect
of the averaging feature, these are also cheaper
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than European or American options.
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Asian options are very common in the commodities
space, particularly in options on oil.
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Rainbow Options
Rainbow options are those where delivery at
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maturity can be on a choice of a number of
assets.
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These are usually calls or puts on a best-of
or worst-of a basket of Y underlying assets.
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This is also considered a type of correlation
trading because the prices of these options
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are sensitive to the correlation among the
basket’s constituents.
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Often Monte Carlo methods are used to value
rainbow options.
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Basket Options
Basket options have payoffs that depend on
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the performance of a basket of assets such
as a set of individual stocks or indices,
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or a group of currencies.
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Typically the owner of a basket option has
the right, but not the obligation, to buy
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or sell a basket of underlying assets at maturity.
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These are commonly used for currency hedging
in institutions with varied currency exposures,
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and often end up being cheaper than individual
options purchased on each currency.
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Quantos
Quantity-adjusting options or quantos are
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derivatives where the underlying is denominated
in a currency other than that in which the
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option is settled.
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A quanto has an embedded currency forward
with a variable notional amount.
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They are attractive to investors who wish
to have exposure to a foreign asset, but without
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the corresponding foreign exchange risk.
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These are used when investors expect the underlying
foreign asset to perform well but do not expect
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that the foreign country’s currency will
perform well over the same timeframe.
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Quanto futures, quanto options, and quanto
swaps are available.
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Well that is it for this video, there is a
bit more covered in the book whichh I have
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linked to below.
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it all the way to the end of one of my videos,
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Have a great day, and thanks for watching.
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Bye
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