We examine the cost of liquidity in rates on CDs purchased by money market funds (MMFs). We find no evidence that rates vary directly with the size of CDs. However, we do find that large MMFs receive higher rates on large CDs than small MMFs. This suggests banks pay for (potential) liquidity.

The probability of informed trading (PIN) measure has been increasingly used in empirical research in finance. However, there is a growing debate as to whether PIN measures information-based or liquidity-based trading. We contribute to the discussion by estimating PIN using transaction data for...