However, since options are nonlinear derivatives, the delta itself will change with every move of the underlying asset; i.e. the hedger must adjust the hedge amount dynamically, in order tocorrectly mimic the option to be replicated. Since in reality it is not possible to continuously adjust the hedge, the hedger is exposed to the risk of the delta changing quickly. The hedger with the delta position is always one step behind the true actual delta. The risk of unanticipated changes in the delta is called the gamma risk. In other words, the gamma is the sensitivity of the delta with respect to the underlying asset. If a trader wants to hedge gamma risk in addition to delta risk, he or she needs a security with a nonlinear payoff depending on the same underlying asset in addition to the underlying asset itself. By just using the underlying asset (which is an instrument with a linear payoff) the trader could never hedge gamma risk (which arises only in nonlinear payoffs). Similarly, option price sensitivities with respect to volatility (called vega), to interest rates (called rho) and to net yield can be calculated and used as a hedge measure for a change in the respective parameter. These sensitivities, which were developed for options on liquidly traded assets (e.g. equity), will generally be appropriate for property options as well.
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Credit options on liquidity traded assets
Friday, March 12th, 2010The change in the underlying credit asset
Thursday, March 11th, 2010
Since options depend on a number of input factors, they must change in value when an input factor changes in value. The strike price as well as the maturity date are deterministic; i.e. once they are set, they do not change any more. The other input factors, price of the underlying asset, volatility, interest rate and net yield, can change over time. For example, the impact of a change in volatility on the option price, all else being equal, is the sensitivity of the option price to volatility.
Most important and obvious, the option price is sensitive to a movement in the underlying asset. The change in the option value divided by the change in the underlying asset is called the delta. The delta of a call option is between zero and one while the delta of a put option is between minus one and zero. The delta is an important parameter with regard to the replicating portfolio.
Since it measures the price change of an option due to a price change in the underlying asset, the delta actually is the exact number of underlying assets that must be held in the replicating portfolio. Somebody who intends to hedge an option should therefore hold a delta amount of underlying assets. This procedure is called delta hedging.
Assessing credit’s potential
Thursday, October 22nd, 2009
Assessing the current and potential value of the target business means taking into account factors such as tangible and intangible assets, notably property and intellectual property, and the expertise of its personnel and the likelihood that they will remain. Investigate the target business’s management expertise and organisational culture: the way that the business is run and decisions are made, as well as its culture and values. Then assess what benefits these would bring and what difficulties they may cause in the integration process.
Assess what you might have to pay in order to win support from the target company’s (and your firm’s) shareholders and other interested parties. Work out who else’s support you need: key managers, the media, stockmarket analysts or whatever. All this affects the ease with which the company can be acquired as well as the depth of long-term support and cash that may be available for future developments, such as a process of costly restructuring.
Planning and preparation for credit
Sunday, October 18th, 2009The first step in developing a strategy includes a top-down strategic vision based on the advantages of acquisition versus other approaches, such as joint ventures or organic growth. Clear understanding of the market sector in general and the strengths and weaknesses of all the players involved in particular will also help to inform the strategy.
This vision determines how the business approaches the deal: what is to be gained, likely targets or partners and the rationale for the deal. Coupled with this is the bottom-up approach, where lower-level managers or, in the case of a group, senior managers at subsidiary level are involved in the strategic process as they can highlight potential pitfalls
as well as more positive future developments that may be overlooked. They may also provide useful market information, such as a target’s strengths and weaknesses or specific opportunities.
Iidentify and select targets. When seeking a suitable acquisition or merger target, include the following:
- A target specification: attributes that are either essential or desirable for a target company to possess.
- The opportunities available in the sector and a list of potential candidates, ranked in priority order.
- What each target offers and how it will fit, in theory and in practice, with the business.
- Who to approach, how and when.
Ddecide specific objectives and understand how issues affect them. Be clear about the deal’s objectives, which may include gaining access to intellectual property assets or new markets, providing synergies with existing activities, increasing capacity, or simply removing a competitor.
Succeeding with credit decisions
Thursday, October 15th, 2009Mergers and acquisitions are increasingly important for many firms; this applies especially to medium and large undertakings and those operating in more than one market. In particular, liberalisation of trade and globalisation of business and financial markets have boosted activity in them. In 2001, merger activity reached a peak and then dropped dramatically as firms reacted to economic uncertainties and wild stockmarket fluctuations. Such cautious conservatism won’t last: an is such a potentially powerful route to growth and competitive advantage that as soon as economic confidence returns, so will mania. Even before then, plucky entrepreneurs and bold shareholders may see opportunities to pick up a bargain, such as a sound business that may have encountered short-term difficulties. However, problems are common following business mergers, with 48% of merged companies underperforming in their industry after three years, according to a 1997 report by Mercer Management Consulting. An enquiry conducted and published in the Harvard Business Review (November 1997) highlighted this point:
Fewer than 50% of mergers ever reach anywhere near the economic or strategic destination that was envisioned for
them. In fact, in many cases the mergers fail because the new company’s managers underestimated, ignored, or mishandled the integration tasks.
Anecdotal evidence from business analysts and commentators suggests that although this information is now some years old, it still holds true. Mergers are no more a guarantee of growth and prosperity today than they ever were.
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