The Bloomberg Billionaires Index shows a ranking of the 200 richest people in the world. It is updated daily and it is a measure based upon changes in market and Bloomberg reportings. The application displays several kinds of information, from raw data to geographical ones, through different types of visualizations, like barcharts or maps. For every visualization, many filters can be applied to data. The graphical visualization is sometimes funny and involving; in addition, curious information are available to the user.
In all sections of the application it is possible to display more detailed information about the single billionaire. Moreover, the user can visualize all the Bloomberg articles about the billionaires or share the application with a friend.
The application is organized into four different sections that show data through four different kinds of visualizations. The "Explore" section shows a ranking of the billionaires through their faces, "Rank" uses horizontal barcharts, "Plot" draws a graph and "Map" places every billionaire on a world map.
The "Explore" section of the application shows a ranking of the billionaires using their faces as icons. The ranking is computed on the basis of the measure chosen by the user: he/she can rank the billionaires depending on the net worth or on changes, with respect to the previous day or with respect to the year to date (YTD). It is also possible to rank on the basis of the internal fluctuations of the standings. Under every icon, the name of the billionaire is displayed along with the position in the rank and a significant raw data about the filter applied.
popup shown hovering on a face
details about a specific billionaire's fortunes
non-filtered data are displayed anyway
The "Rank" section shows the same ranking of the section "Explore", but with different kinds of visualizations: barcharts and tables.
ranking fluctuations: hovering on a line the billionaire is highlighted
raw data displayed in a table: high readability
bars and raw data at the same time; good use of colors
filtered data are not moved on the top: need to scroll
the graph is incomprehensible
The "Plot" section plots data of billionaires but it gives information not about the billionaire's earnings, but about their industries and trades. This section allows the user to make some kinds of weak comparisons among industries' areas.
data about types of industry, ranking and number of people (density of icons)
it is difficult to spot Italian billionaires
The "Map" section visualizes all the billionaires on a world map on the basis of their citizenships. Circles with different radius are used to display the estates.
non-filtered data have been removed from the map
the map is so crowded that it is impossible to understand billionaires' citizenships
Throughout all the application there are some features that do not belong to any specific section but are typical of the whole visualization. In the same way, some critics have to be made for the entire application.
all the types of filters applicable
selection of a subset of billionaires
curiosity: it is possible to show number of children for each billionaire
The application shows data about the net worth of the first 200 world's richest people. Data are computed on the basis of changes in market and Bloomberg reportings. Daily, at 5:30 p.m. in New York, data are updated and a new ranking is computed. Stakes of publicly traded companies are valued with the most recent closing price while valuations are converted in U.S. dollar using the current exchange rate. If the ownership of an asset cannot be verified, that asset is not included in the calculations. Net worth calculations include dividend income paid and taxes are applied at the highest rate. No assumptions have been made on personal debts. It has been assumed, however, that all billionaires' fortunes are also family fortunes. Each billionaire has been given the possibility to reply and discuss about the calculations of their fortunes. Michael Bloomberg, the founder and owner of Bloomberg LP, is not included in the data.
You can find a detailed description about calculations here.
Here I want to talk about some interesting facts that can be found using the application, thanks to the different types of visualization.
no billionaires are between 20-29
billionaires between 30-39 are just three
almost anyone has cash assets between 0% and 30%
majority of billionaires comes from USA, Europe and Asia