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9900 in 3 months' time, although not to the extent that they would profit from buying a European option. Instead they purchase a 3-month, 0.9900 Digital Option that has a gearing factor of 7:1. The investment made is €25,000 with a Spot Reference:0. 9250 These Digital options usually suit those having very specific spot views and/or premium constraints. Result if spot is above 0.9900, then the investor receives a payment of €175,000, if spot is below 0.9900 then the option expires and is worthless (Camara A 2005).
Barrier options are path dependent option that has one of two characteristics: (1) Either a knockout, which causes the option to immediately terminate if the underlier reaches a specified barrier level, or (2) knock-in feature causes the option to become effective only if the underlier reaches a specified barrier level. Premiums are paid in advance, although due to the contingent nature of the option, they tend to be lower than for example a corresponding vanilla option. Whereas equity default swap is a variety of over the counter derivative, although technically an equity derivative, it behaves like a fusion of a credit derivative and an equity derivative. The title equity default swap appears a contradiction, how can equity default; the product is a resemblance to credit default swaps, whose structures it imitates (Camara A 2005).
An equity default swap is a mode for one party to provide another party protection against a possible event relating to their reference asset. As with a credit default swap, the reference asset is a debt instrument, and protection is provided against a credit event for example a default. With equity default swaps, the reference asset is part of the company's stock, and therefore it provides protection against a marked decline in the price of the stock. An illustration of this is if the equity default swap provides protection against a 50% drop in the stock price, from the date when the equity default swap was initiated; this event will be protected, this is also known as the trigger event or knock-in event (Camara A 2005).
Which Model to apply
Amongst the major models that have been developed to help the financial markets is the Black-Scholes model in 1973. Although financial historians have traced the origins of this model to the seminal work of Bachelier (1900) and to the extensions of Sprenkle (1962), Boness (1964), and Samuelson (1967), it is clearly the insights provided by Black and Scholes as well as Merton (1973) that revolutionised the financial markets. The key factor is the notion that an option can be perfectly hedged with a unit of the underlying asset (Chance, D 1999).
The Black-Scholes model is increasingly being viewed as the model of choice, but it is questioned whether it merits should earn this status. Outside the investment industry, the model isn't well understood, and vital considerations such as the impact of vesting on option values remain unresolved.