https://diglib.natlib.lk/handle/123456789/49377 Wed, 08 Apr 2026 08:43:40 GMT 2026-04-08T08:43:40Z https://diglib.natlib.lk/handle/123456789/8201 Content & Cover Page  Colombo Business Journal Fri, 01 Dec 2017 00:00:00 GMT https://diglib.natlib.lk/handle/123456789/8201 2017-12-01T00:00:00Z https://diglib.natlib.lk/handle/123456789/8200 Information Content of Insider Trading Volume: Evidence from Sri Lanka Perera, T.K.L.U.D.; Nimal, P.D. This study examines whether high volume directors’ trading is more informative than low volume directors’ trading. It further examines the speed of adjustment of stock prices for the information content of high volume directors’ trading of the listed companies in the Colombo Stock Exchange (CSE). This study analyses a sample of high rupee-volume and percentage-volume directors’ purchases and sales reported to the CSE during September, 2004 to August, 2012 using the standard event study methodology. The findings on the high rupee-volume trading are consistent with the hypotheses that high rupee-volume directors’ purchases (sales) are associated with positive (negative) abnormal returns. Although the abnormal returns of percentage-volume directors’ sales are negative and significant, the high percentage-volume directors’ purchases are not significant. The findings on the speed of adjustment of stock prices on these information are not conclusive. I.e., the abnormal returns of high rupee-volume directors’ purchases are positive and significant on the event day and the abnormal returns of high rupee-volume and percentage-volume director’s sales are negative and significant but have been reflected in the stock prices with a delay suggesting that the adjustment of stock prices for director’s sales may not be quick in the CSE. Fri, 01 Dec 2017 00:00:00 GMT https://diglib.natlib.lk/handle/123456789/8200 2017-12-01T00:00:00Z https://diglib.natlib.lk/handle/123456789/8199 Quality Management and Supply Chain Management Practices towards Operational Performance: A Study of the Rubber Manufacturing Industry of Sri Lanka Jayalath, Ushantha; Samarasinghe, G.D.; Kuruppua, G.N.; Prasanna, R.; Perera, H.S.C. Rubber industry, one of the growing industries in the world creates a vacuum to exploit foreign markets especially for countries like Sri Lanka. However, lack of strategic relationships and low quality products with higher cost keep Sri Lanka’s rubber industry performance away from the global market. Since supply chain management (SCM) is implicated in the issue of external relationships and quality management (QM) is implicated in low product quality, the key aim of this study was to test the relationships between SCM, QM and organisational performance, in the context of the rubber industry in Sri Lanka. In particular, it empirically tested the mediating role played by SCM in the relationship between QM and operational performance (OP) of rubber manufacturing organisations though this relationship has already been established in theoretical literature. Data was gathered through a questionnaire from managers of 44 firms in the rubber products manufacturing sector in Sri Lanka. Data was analysed with the descriptive and inferential statistical analyses. The results indicated that QM practices and SCM practices improve OP while SCM practices are partially mediating the effect of QM practices on OP. The results of this study help the rubber products manufacturing organisations in Sri Lanka to formulate successful strategies by enhancing the OP via QM and SCM practices. Fri, 01 Dec 2017 00:00:00 GMT https://diglib.natlib.lk/handle/123456789/8199 2017-12-01T00:00:00Z https://diglib.natlib.lk/handle/123456789/8198 Effect of Information Access through Social Capital on Mitigating Business Opportunism of Small Enterprises in Sri Lanka Priyanath, H.M.S.; Premaratne, S.P. The study explored how information access through different dimensions of Social Capital (SC) (structural, relational and cognitive) affects the mitigation of business opportunism. Data were collected from 373 Small Enterprises (SEs) in Sri Lanka, conducting face-to-face interviews with the owners of SEs. Partial Least Squares-Structural Equation Modelling (PLS-SEM) was employed to analyse data. The results revealed that information accessed through different dimensions of SC have significant negative effects with business opportunism of exchange partners. Therefore, the study recommends SEs to develop SC while having strong relationships with exchange partners in order to access information leading to the mitigation of opportunism of exchange partners. Fri, 01 Dec 2017 00:00:00 GMT https://diglib.natlib.lk/handle/123456789/8198 2017-12-01T00:00:00Z