We obtain the initial sample of 419 Levels II and III American Depository Receipt (ADR) firms from JP Morgan ADR Analytics
and the Bank of New York.15 Matching the sample with Compustat North America and CRSP reduces the sample to 342 firms
with 88 IFRS users in 2006. We further restrict sample firms to have data available for both 2006 and 2007, the year before and
after the elimination. To be included in the sample, each firm must also have the necessary data to calculate all four liquidity
measures and control variables for our regression analysis. We collect financial statement data from Compustat North America,
stock return and trading volume data from CRSP, and bid-ask spread data from TAQ. Our final sample consists of 480 firm-year
observations representing 240 distinct firms from 37 countries, of which 78 firms are IFRS users.16