A recent analysis of the 2007 financial markets of 48 countries has revealed that the world's finances are in the hands of just a few mutual funds, banks, and corporations. This is the first clear picture of the global concentration of financial power, and ... the worldwide financial system's vulnerability. A pair of physicists at the Swiss Federal Institute of Technology in Zurich did a physics-based analysis of the world economy as it looked in early 2007. Stefano Battiston and James Glattfelder extracted the information from the tangled yarn that links 24,877 stocks and 106,141 shareholding entities in 48 countries, revealing what they called the backbone" of each country's financial market. The most pared-down backbones exist in Anglo-Saxon countries, including the U.S., Australia, and the U.K.. The biggest fish was the Capital Group Companies, with major stakes in 36 of the 48 countries studied. The results raise questions of where and when a company could choose to exert this influence. Glattfelder added that the internationalism of these powerful companies makes it difficult to gauge their economic influence. "[With] company structures which are so big and spanning the globe, it's hard to see what they're up to and what they're doing," he said. Large, sparse networks dominated by a few major companies could also be more vulnerable, he said. "In network speak, if those nodes fail, that has a big effect on the network." The results will be published in an upcoming issue of the journal Physical Review E.