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Abstract:
This paper analyses the determinants of venture capital for a sample of 21 countries. In particular, we consider the importance of IPOs, GDP and market capitalization growth, labor market rigidities, accounting standards, private pension funds, and government programs. We find that IPOs are the strongest driver of venture capital investing. Private pension fund levels are a significant determinant over time but not across countries. Surprisingly, GDP and market capitalization growth are not significant. Government policies can have a strong impact, both by setting the regulatory stage, and by galvanizing investment during downturns. Finally, we also show that different types of venture capital financing are affected differently by these factors. In particular, early stage venture capital investing is negatively impacted by labor market rigidities, while later stage is not. IPOs have no effect on early stage venture capital investing across countries, but are a significant determinant of later stage venture capital investing across countries. Finally, government funded venture capital has different sensitivities to the determinants of venture capital than non-government funded venture capital. Our insights emphasize the need for a more differentiated approach to venture capital, both from a research as well as from a policy perspective. We feel that while later stage venture capital investing is well understood, early stage and government funded investments still require more extensive research.

Abstract:
This paper uses performance-evaluation methodology to estimate the returns earned by insiders when they trade their company's stock. Our methods are designed to estimate the returns earned by insiders themselves and thereby differ from the previous insider-trading literature, which focuses on the informativeness of insider trades for other investors. We find that insider purchases earn abnormal returns of more than 6 percent per year, and insider sales do not earn significant abnormal returns. We compute that the expected costs of insider trading to non-insiders are about 10 cents for a $10,000 transaction.

Abstract:
This paper estimates the profits to insiders when they trade their company's stock. We construct a rolling "purchase portfolio" that holds all shares purchased by insiders over the previous year and an analogous "sale portfolio" that holds all shares sold by insiders over the previous year. We then analyze the returns to these value-weighted portfolios using performance-evaluation methods. This approach allows us to study the returns to insider transactions beginning on the day after their execution, and is free of the statistical difficulties that plague event studies on long-horizon returns. Using a comprehensive sample of reported insider transactions from 1975-1996, we find that the purchase portfolio earns abnormal returns of about 40 basis points per month, with about one-sixth of these abnormal returns accruing within the first five days after the initial transaction, and one-third within the first month. The sale portfolio does not earn abnormal returns. Our portfolio-based approach also allows for straightforward decompositions of the purchase and sale portfolios by various characteristics. We find that the abnormal returns to insider trades in small firms are not significantly different from those in large firms, and that top executives do not earn higher abnormal returns than do other insiders.