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Full-Text Articles in Business

Dating The Timeline Of Financial Bubbles During The Subprime Crisis, Peter C. B. Phillips, Jun Yu Nov 2011

Dating The Timeline Of Financial Bubbles During The Subprime Crisis, Peter C. B. Phillips, Jun Yu

Research Collection School Of Economics

A new recursive regression methodology is introduced to analyze the bubble characteristics of various financial time series during the subprime crisis. The methods modify a technique proposed in Phillips, Wu, and Yu (2011) and provide a technology for identifying bubble behavior with consistent dating of their origination and collapse. The tests serve as an early warning diagnostic of bubble activity and a new procedure is introduced for testing bubble migration across markets. Three relevant financial series are investigated, including a financial asset price (a house price index), a commodity price (the crude oil price), and one bond price (the spread …


The Implications Of Sovereign Wealth Fund Investment On Capital Markets: A Bottom-Up View, David Fernandez Jun 2011

The Implications Of Sovereign Wealth Fund Investment On Capital Markets: A Bottom-Up View, David Fernandez

Research Collection Lee Kong Chian School Of Business

The buzz around sovereign wealth funds has been turned down a notch, but they remain a hot topic. The accusations of sovereign wealth funds having hidden agendas remain, but with the very public losses suffered by some during the recent financial turmoil, such talk has even less credibility. And given that most of those losses were from investments in US, UK, and European financial institutions, hope that sovereign wealth funds would be the saviors of Wall Street has also faded. At its base, four trends continue to keep sovereign wealth funds in focus. First, there is the phenomenal rise of …


The Unintended Effects Of The Sarbanes-Oxley Act, Vidhi Chhaochharia, Clemens A. Otto, Vikrant Vig Mar 2011

The Unintended Effects Of The Sarbanes-Oxley Act, Vidhi Chhaochharia, Clemens A. Otto, Vikrant Vig

Research Collection Lee Kong Chian School Of Business

The Sarbanes-Oxley Act (SOX) was passed in the wake of several scandals that rocked corporate America in 2001 and 2002. The objective behind SOX was to improve corporate governance by improving accounting disclosures. Compliance with Section 404 is considered by many to be the most costly requirement of SOX and has been argued to be a disproportionate burden for small firms. Consequently, firms with a public float below $75 million were granted several exemptions from compliance. We document an unintended effect of these exemptions: a weakening of corporate governance through a weakening of the market for corporate control.


Explosive Behavior In The 1990s Nasdaq: When Did Exuberance Escalate Asset Values?, Peter C. B. Phillips, Yangru Wu, Jun Yu Feb 2011

Explosive Behavior In The 1990s Nasdaq: When Did Exuberance Escalate Asset Values?, Peter C. B. Phillips, Yangru Wu, Jun Yu

Research Collection School Of Economics

A recursive test procedure is suggested that provides a mechanism for testing explosive behavior, date stamping the origination and collapse of economic exuberance, and providing valid confidence intervals for explosive growth rates. The method involves the recursive implementation of a right-side unit root test and a sup test, both of which are easy to use in practical applications, and some new limit theory for mildly explosive processes. The test procedure is shown to have discriminatory power in detecting periodically collapsing bubbles, thereby overcoming a weakness in earlier applications of unit root tests for economic bubbles. An empirical application to the …


Quasi-Option Value Under Strategic Interactions, Tomoki Fujii, Ryuichiro Ishikawa Jan 2011

Quasi-Option Value Under Strategic Interactions, Tomoki Fujii, Ryuichiro Ishikawa

Research Collection School Of Economics

We consider a simple two-period model of irreversible investment under strategic interactions between two players. In this setup, we show that the quasi-option value may cause some conceptual difficulties. In case of asymmetric information, decentralized investment decisions fail to induce first-best allocations. Therefore a regulator may not be able to exercise the option to delay the decision to develop. We also show that information-induced inefficiency may arise in a game situation and that under certain assumptions inefficiency can be eliminated by sending asymmetric information to the players, even when the regulator faces informational constraints. Our model is potentially applicable to …


The Impact Of Transaction Duration, Volume And Direction On Price Dynamics And Volatility, Anthony S. Tay, Christopher Ting, Yiu Kuen Tse, Mitchell Warachka Jan 2011

The Impact Of Transaction Duration, Volume And Direction On Price Dynamics And Volatility, Anthony S. Tay, Christopher Ting, Yiu Kuen Tse, Mitchell Warachka

Research Collection School Of Economics

We explore the role of trade volume, trade direction, and the duration between trades in explaining price dynamics and volatility using an Asymmetric Autoregressive Conditional Duration model applied to intraday transactions data. Our results suggest that volume, direction and duration are important determinants of price dynamics, while duration is also an important determinant of volatility. However, the impact of volume and direction on volatility is marginal after controlling for duration, and the impact of volume on volatility appears to be confined to periods of infrequent trading.