This paper examines intra-day trading data from the inter-dealer broker market for U.S. Treasury securities and measures the degree of price pressure in the off-the-run Treasury market. As is well known, securities that would appear to be very close substitutes, i.e., on-the-run and off-the-run Treasury bonds, behave as if there is some degree of market segmentation. This is the first systematic study of the off-the-run Treasury note and bond market to investigate a price pressure effect using intra-day data. It analyzes price pres-sure through matched pairs of securities that differ only in liquidity.
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