Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

Dispersion is an important statistical measure that quantifies the range of outcomes among the components of an index during a specific period. The S&P 500 Realized Dispersion Indices offer two ...

Taylor Dispersion Analysis (TDA), or Taylor-Aris dispersion, is a technique for rapidly determining the diffusion coefficients of molecules. From the diffusion coefficient values, hydrodynamic radii ...

Lasers that transmit data on optical fibers do not produce monochromatic light. Instead, they provide a narrow spectrum that includes many wavelengths. The physical characteristics of optical fibers ...

The financial markets have been very challenging over the past couple of years with few strategies generating alpha. Dispersion trading is one of the few strategies that have worked in this difficult ...