This paper estimates the shareholder wealth affects of supply chain glitches that resulted in production or shipment delays. The results are based on a sample of 519 glitches announcements made during 1989-2000. Shareholder wealth affects are estimated by computing the abnormal stock returns (actual returns adjusted for industry and market-wide influences) around the date when information about glitches is publicly announced. Supply chain glitch announcements are associated with an abnormal decrease in shareholder value of 10.28%. Regression analysis is used to identify factors that influence the direction and magnitude of the change in the stock market's reaction to glitches. We find that larger firms experience a less negative market reaction, and firms with higher growth prospects experience a more negative reaction. There is no difference between the stock market's reaction to pre-1995 and post-1995 glitches, suggesting that the market has always viewed glitches unfavorably. Capital structure (debt-equity ratio) has little impact on the stock market's reaction to glitches. We also provide descriptive results on how sources of responsibility and reasons for glitches affect shareholder wealth.

T his paper investigates the long-term stock price effects and equity risk effects of supply chain disruptions based on a sample of 827 disruption announcements made during 1989 -2000. Stock price effects are examined starting one year before through two years after the disruption announcement date. Over this time period the average abnormal stock returns of firms that experienced disruptions is nearly Ϫ40%. Much of this underperformance is observed in the year before the announcement, the day of the announcement, and the year after the announcement. Furthermore, the evidence indicates that firms do not quickly recover from the negative effects of disruptions. The equity risk of the firm also increases significantly around the announcement date. The equity risk in the year after the announcement is 13.50% higher when compared to the equity risk in the year before the announcement.

This study explores the hypotheses that implementing effective total quality management (TQM) programs improves the operating performance of firms. The winning of quality awards is used as a proxy for the effective implementation of TQM programs. Changes in various performance measures for a test sample of quality-award winners are compared against a sample of control firms. Our statistical tests provide strong evidence that firms that have won quality awards outperform the control firms on operating income-based measures. Over a 10-year period, from 6 years before to 3 years after the year of winning the first quality award, the mean (median) change in the operating income for the test sample is 107% (48%) higher than that of the control sample. There is reasonably strong evidence that firms that have won quality awards do better on sales growth than the control firms. Over the 10-year period, the mean (median) change in sales for the test sample is 64% (24%) higher than that of the control sample. We also find weak evidence that firms in our test sample are more successful in controlling costs when compared with the firms in the control sample. In addition, the results indicate that firms in our test sample increased their capital expenditures more than the control sample over the time period prior to winning quality awards. Compared with the control sample, the test sample shows higher growth in both employment and total assets.total quality management, quality awards, operating income, sales, costs, financial performance

This paper documents the effect of investments in Enterprise Resource Planning (ERP), Supply Chain Management (SCM), and Customer Relationship Management (CRM) systems on a firm's long-term stock price performance and profitability measures such as return on assets and return on sales. The results are based on a sample of 186 announcements of ERP implementations, 140 SCM implementations, and 80 CRM implementations. Our analysis of the financial benefits of these implementations yields mixed results. In the case of ERP systems, we observe some evidence of improvements in profitability but not in stock returns. The results for improvements in profitability are stronger in the case of early adopters of ERP systems. On average, adopters of SCM system experience positive stock returns as well as improvements in profitability. There is no evidence of improvements in stock returns or profitability for firms that have invested in CRM. Although our results are not uniformly positive across the different enterprise systems (ES), they are encouraging in the sense that despite the high implementation costs, we do not find persistent evidence of negative performance associated with ES investments. This should help alleviate the concerns that some have expressed about the viability of ES given the highly publicized implementation problems at some firms. #