Random walk theory is a financial model which assumes that the stock market moves in a completely unpredictable way. The hypothesis suggests that the future price of each stock is independent of its ...

(Author’s Note: There are theories. I do not know the ending, and this post gives the six of you UPPROXIANS who watch Doctor Who a chance to speculate. Be warned, however, that the finale has been ...

Random Matrix Theory (RMT) has emerged as a potent framework to characterise the statistical properties of eigenvalues in large complex systems, bridging disciplines from quantum physics to number ...

Harry Markowitz famously quipped that diversification is the only free lunch in investing. What he did not say is that this is only true if correlations are known and stable over time. Markowitz’s ...

And then there were seventeen. When Graeme McDowell missed a tricky downhill putt on the eighteenth hole at Olympic Club on Sunday night, the world of golf had its seventeenth winner in eighteen major ...

As it stands, there are probably more random theories about Sex and the City than I even care to count. Random theories about why the writers chose particular plotlines, what Pat was thinking when she ...

Scientists are exploring a mysterious pattern, found in birds’ eyes, boxes of marbles and other surprising places, that is neither regular nor random. All complex correlated systems, from Arctic melt ...