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Through the three industrial revolutions, technology has enabled rapid changes in society. In a capitalist society, capital is invested where there is utility, for example, economic benefit. We intend to determine that the stock price of a company that uses a particular technology will change with the life cycle of the technology in question. Specifically, we filtered companies that mainly deal with augmented reality and are listed in Korea’s KOSDAQ market. We grouped these companies based on detailed technologies that constitute augmented reality. We used the event study method to calculate the stock returns against a benchmark. As a result, in the “Peak of Inflated Expectations„ stage, the portfolios of all companies using augmented reality generally show higher returns than the benchmark. However, it is difficult to ascertain whether a return generated based on one of the detailed technologies that make up augmented reality is higher or lower than that of the benchmark. During the “Trough of Disillusionment„ phase, there was neither a consistent trend of cumulative abnormal returns (CAR) nor buy-and-hold abnormal returns (BHAR). However, during this stage, there was a positive correlation of average BHAR and average abnormal returns between the entire sample’s portfolio and each detailed technology firm’s portfolio.

This study investigates the relations between disclosure tone, insider trading and returns. Using a dictionary-based approach to quantify the disclosure tone contained in the Management Discussion and Analysis of 10-Q and 10-K filings, I find that the net disclosure tone predicts the insider purchase ratio (purchases scaled by the sum of purchases and sales), even after controlling for past purchases, return volatility and firm characteristics. Constructing a buy-and-hold portfolio over a six months horizon, I find that insiders earn approximately 5.8% abnormal return per year. Both disclosure tone and insider purchase ratio are able to predict the buy-and-hold abnormal return. [ABSTRACT FROM AUTHOR]

Abstract: Since 2002, many firms have been required to alter their board of directors and committees to increase management monitoring. Kinney and McDaniel (1989) and Chhaochharia and Grinstein (2007) provide empirical evidence suggesting that investments in corporate governance may differ based on firm size, and that under-investing in monitoring may be more pronounced in smaller firms. To further test whether the benefits of recent changes in companies' governance mechanisms accrue to smaller firms that have underinvested in governance, we examine the stock market reaction to changes in board structure over the twenty-four months following the passage of the Sarbanes–Oxley Act. We construct a new composite measure of board structure and regress buy-and-hold abnormal returns on changes that occur in the Board Structure Index, finding that improvements in corporate governance quality result in economically significant abnormal returns accruing only to the smaller firms with weak initial board structures. [Copyright &y& Elsevier]

This study examines long-term stock returns following open-market share repurchases of listed firms in Taiwan. The empirical results based on event-time cumulative abnormal returns (CARs) and buy-and-hold abnormal returns (BHARs) show that announcing firms do not experience significant positive long-term return relative to the control firms. Moreover, using the calendar-time portfolio approach, we find the abnormal returns are significantly negative over twelve, twenty-four, and thirty-six months, suggesting stocks of firms that repurchase their shares are underperformed in the postannouncement period. The implication from our results is that in Taiwan, share repurchases are mainly used to stabilize stock price during a market downturn rather than to signal a firm's future prospects. [ABSTRACT FROM AUTHOR]

We study long-horizon shareholder returns in a comprehensive sample of Real Estate Investment Trust (REIT) mergers, to test whether or not the anomaly of post-merger underperformance observed in conventional firms applies to the case of REITs. Constructing synthetic benchmark portfolios controlling for firm size and for book-to-market value ratio, we find that 60-month buy-and-hold abnormal returns for REIT acquirers are significantly negative at approximately −10%, supporting the position that REIT merger acquirers underperform non-merging REITs in the long run. We find no evidence to challenge previous studies reporting positive announcement period returns for acquirers when the target is privately held, but we do find evidence that these positive returns do not persist. The long term performance of acquiring REITs is approximately the same whether the target is public or private. [ABSTRACT FROM AUTHOR]

Public firms that seek and successfully receive certification of quality management, type ISO 9000, seem to experience different post-announcement share-price drifts depending on their size. This result is not consistent with the notion that companies seeking to implement a quality management system may be reducing agency problems between managers and shareholders, which are among corporate governance and control goals of any well management company. Otherwise, we should have observed material and positive abnormal share-price changes, following ISO 9000 registration announcements, independently of company size. Our results show that only stocks of large-size firms, experience positive average significantly abnormal returns over the post-announcement 1-, 2-, and 3-year horizons. On the other hand, stocks of small-size firms experience negative average significantly abnormal returns, and stocks of mid-size firms do not show any material gain over the same horizons. Although there is a rich finance literature that has studied the long-run abnormal stock-price returns following several major corporate events, this study seems to be the only one that have examined the potential long-run impact of this certification-event, despite the fact that those standards have been around since the middle 1980s. [ABSTRACT FROM AUTHOR]

Through the three industrial revolutions, technology has enabled rapid changes in society. In a capitalist society, capital is invested where there is utility, for example, economic benefit. We intend to determine that the stock price of a company that uses a particular technology will change with the life cycle of the technology in question. Specifically, we filtered companies that mainly deal with augmented reality and are listed in Korea's KOSDAQ market. We grouped these companies based on detailed technologies that constitute augmented reality. We used the event study method to calculate the stock returns against a benchmark. As a result, in the "Peak of Inflated Expectations" stage, the portfolios of all companies using augmented reality generally show higher returns than the benchmark. However, it is difficult to ascertain whether a return generated based on one of the detailed technologies that make up augmented reality is higher or lower than that of the benchmark. During the "Trough of Disillusionment" phase, there was neither a consistent trend of cumulative abnormal returns (CAR) nor buy-and-hold abnormal returns (BHAR). However, during this stage, there was a positive correlation of average BHAR and average abnormal returns between the entire sample's portfolio and each detailed technology firm's portfolio. [ABSTRACT FROM AUTHOR]