Determinants of the round-to-round returns to pre-IPO venture capital investments in U.S. biotechnology companies |
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Authors: | John R.M. Hand |
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Affiliation: | Kenan–Flagler Business School, UNC Chapel Hill, Chapel Hill, NC 27599-3490, United States |
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Abstract: | I propose that pre-IPO venture-backed biotech companies offer a useful new setting through which to evaluate the relative merits of theories for why firm size and book-to-market explain variation in stock returns. This is because pre-IPO biotech firms have large and rapidly evolving growth options relative to assets-in-place. Such attributes align closely with the key features of the model by Berk et al. [Berk, J.B., Green, R.C., Naik, V., 1999. Optimal investment, growth options, and security returns. Journal of Finance 54 (5), 1553–1607] of the endogenous relations between growth options, optimal investment actions and expected equity returns, where firm size and book-to-market emerge as sufficient statistics for the aggregate risk of a firm's assets-in-place. Using venture capital investments in pre-IPO U.S. biotech companies during 1992–2001, I find that equity returns between financing rounds (‘round-to-round’ returns) are reliably negatively related to firm size and positively related to book-to-market ratios. I interpret these results as being most consistent with the theory of Berk et al., and less consistent with alternative explanations such as financial distress, behaviorally biased investors or data snooping. |
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Keywords: | Book-to-market Firm size Growth options Risk Round-to-round returns |
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