LONDON/NEW YORK (Reuters) - As world markets catch their breath after a week of turmoil, investors are concerned that a new era of heightened volatility could eventually lead to a second wave of ...

Volatility is the core measure of financial risk, but not all volatility calculations are created equal. Simple historical variance treats all past returns the same, which can make it slow to reflect ...

Many traders find options to be exciting because of the implicit leverage within the securities – buy $500 worth of options and control a potential $120,000 investment. That is only one small aspect ...

With investments, volatility refers to changes in an asset's or market's price — especially as measured against its usual behavior or a benchmark. Volatility is often expressed as a percentage: If a ...

LONDON/NEW YORK (Reuters) - As world markets catch their breath after a week of turmoil, investors are concerned that a new era of heightened volatility could eventually lead to a second wave of ...