Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
I study a dynamic economy featuring adverse selection in asset markets. Borrowing-constrained entrepreneurs sell past projects to finance new investment, but asymmetric information creates a lemons problem. I show that this friction is equivalent to a tax on financial transactions. The implicit tax rate responds to aggregate shocks, generating amplification in the response of investment and cyclical variation in liquidity.