Stock market network reveals investor clustering

(PhysOrg.com) -- The stock price of a company continuously changes, going up or down depending on the collective activity of a large number of investors. Although this process seems fairly straightforward, no one fully understands ...

A tool to detect higher-order phenomena in real-world data

EPFL researchers have developed a novel approach to network analysis that allows them to reveal and interpret, for the first time, interactions among multiple variables in data from neuroscience, economics, and epidemiology.

Market report: Rising stock wealth does boost spending, employment

The stock market is a staple of business news, but it is unclear how meaningful stock prices are to the larger economy. Do changes in stock prices directly affect shorter-term consumption, or are they just leading indicators ...

Tiny price gaps cost investors billions

Imagine standing in the grocery store, looking at a pile of bananas. On your side of the pile, the manager has posted yesterday's newspaper flyer, showing bananas at 62¢ per pound—so that's what you pay at the register. ...

Weather may influence institutional investors' stock decisions

Weather changes may affect how institutional investors decide on stock plays, according to a new study by a team of finance researchers. Their findings suggest sunny skies put professional investors more in a mood to buy, ...

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