In this article, we describe two commands - fetchyahooquotes and fetchyahookeystats - that import historical financial data and key current finan- cial statistics from Yahoo! Finance.

fxrates is a command to import historical U.S. exchange rate data from the Federal Reserve and to calculate the daily change of the exchange rates. Because many cross-country datasets use different spellings and conventions for country names, we also introduce a second command, countrynames, to...

The American Presidency Project (http://www.presidency.ucsb.edu) provides presidential job approval poll results. These data are available for each U.S. president since President Franklin D. Roosevelt and for all the job approval polls conducted since his presidency. In this article, we propose...

In this article, we describe the gwke82 command, which implements a measure of instantaneous feedback for two time series following Geweke (1982, Journal of the American Statistical Association 77: 304–313). Copyright 2013 by StataCorp LP.