As of 2015, Forbes publishes multiple "rich lists." These include a list of America's richest families, the 400 richest Americans, and lists of the top 50 richest people in Africa and several Asian countries.
Many of the people on Forbes' list of 400 richest Americans are also on the publication's ranked list of current billionaires. While most of the lists are ranked and published at the end of each year, the list of billionaires exists in real time, following the rise and fall of stocks in the companies that these billionaires own. The 400 list includes detailed information about each person including his age, net worth and a photograph.