The demand for information and transparency from listed corporations
has recently increased. In spite of an increased demand for mandatory disclosures
from regulators, corporations choose to voluntarily disclose additional information
in order to satisfy demands from the capital market. However, the extent and
content of information in those voluntary disclosures vary across corporations. The
aim of this study is to explain the variation in the content of information in voluntary
disclosures by listed corporations. The analyses are based on data collected
from 431 annual reports from corporations listed on the Stockholm Stock Exchange
during the years 2002 and 2005. The findings support explanations from agency
theory and positive accounting theory that size and the debt ratio are positively
correlated with the content of information in voluntary disclosures. Corporations
with a high share of management ownership disclosed less information than corporations
with a low share of management ownership. The study also shows that
variations in voluntary disclosures can be explained by factors derived from institutional
theory and ‘international capital market pressures’. The results indicate that
foreign ownership and international listing to some extent have a positive effect on
the content of information in voluntary disclosures. Industry was another factor that
had a significant influence on voluntary disclosures. One important finding is that
regulation to some extent can stimulate voluntary disclosures; our results did not
indicate an ‘unintended chilling effect’ due to too much regulation. In general, the
corporations disclosed more voluntary information after the introduction of IFRS.