Showing posts with label pasar modal. Show all posts
Showing posts with label pasar modal. Show all posts

Saturday, October 16, 2010

The opportunity cost of Technical Trading Rules in the Forex Market

Pakar Iklan The opportunity cost of Technical Trading Rules in the Forex Market : TTRs are typically rules of thumb that relate a certain information variable, the technical trading signal, to a trading position. In other words, a TTR specifies a mapping from the time t signal zt to an advised trading position αCH (zt), expressed as a percentage of the agent’s initial wealth. A typical feature is the discontinuity in the mapping αCH(zt). We assume that the trading signal has been standardized such that the trading rule can be described as:

Obviously, the optimal portfolio composition might differ from the one implied by the
TTR. As noted by Skouras (2001a), utility-based optimal trading rules typically depend on various factors, including the level of risk aversion and rational expectations about the conditional return distribution. Adopting a standard mean-variance approach, the optimal trading strategy for a rational, risk averse, liquidity constrained agent can be written as the solution to the following problem

The Cost of Technical Trading Rules in the Forex Market

Pakar Iklan The Cost of Technical Trading Rules in the Forex Market ;Despite the umerous studies reporting the pervasive use and profitability of technical trading rules (TTRs),1 also called chartist rules, there is still a considerable amount of scepticism in the academic literature regarding their true value. Critics of chartist rules often point to the seemingly suboptimal nature of the portfolio composition implied by these rules (e.g. Skouras, 2001a).

After all, investment strategies based on such rules (i ) restrict the information set to a narrow group of pre-defined information variables, (ii ) assume a positive relation of the sign of the signal with future expected excess returns2, and (iii ) imply a bang-bang type of investment strategy, i.e. a strategy where all wealth is invested either short or long. Each of these assumptions goes against the standard rational investor paradigm. The first two assumptions possibly go against the rationality of expectations formation, while the third is in general at odds with the assumption of risk aversion.
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pengertian pasar modal menurut para ahli

Pakar Iklan pengertian pasar modal menurut para ahli ; Manajemen Investasi. Menurut Husnan (2003) adalah pasar untuk berbagai instrumen keuangan jangka panjang yang bisa diperjual-belikan, baik dalam bentuk hutang maupun modal sendiri, baik yang diterbitkan oleh pemerintah, public authorities, maupun perusahaan swasta.

Menurut Usman (1990:62), umumnya surat-surat berharga yang diperdagangkan di pasar modal dapat dibedakan menjadi surat berharga bersifat hutang dan surat berharga yang bersifat pemilikan. Surat berharga yang bersifat hutang umumnya dikenal nama obligasi dan surat berharga yang bersifat pemilikan dikenal dengan nama saham. Lebih jauh dapat juga didefinisikan bahwa obligasi adalah bukti pengakuan hutang dari perusahaan, sedangkan saham adalah bukti penyertaan dari perusahaan.

Pengertian pasar modal secara umum adalah suatu sistem keuangan yang terorganisasi, termasuk didalamnya adalah bank-bank komersial dan semua lembaga perantara dibidang keuangan, serta keseluruhan surat-surat berharga yang beredar. Dalam arti sempit, pasar modal adalah suatu pasar (tempat, berupa gedung) yang disiapkan guna memperdagangkan saham-saham, obligasi-obligasi, dan jenis surat berharga lainnya dengan memakai jasa para perantara pedagang efek (Sunariyah, 2000 : 4).

Dilihat dari pengertian akan pasar modal diatas, maka jelaslah bahwa pasar modal juga merupakan salah satu cara bagi perusahaan dalam mencari dana dengan menjual hak kepemilikkan perusahaan kepada masyarakat.