Lumens measure how much light you are getting from a bulb. More lumens means it's a brighter light; fewer lumens means it's a dimmer light. Lumens are to light what. Pounds are to bananas. Gallons are to milk.
The Kuala Lumpur Composite Index is the world's longest running bull market. Since January 2008 the KLCI has not had a 20% correction (which represents a bear market and the end of a bull market). Malaysian shares have moved up 88% during this bull run. But it hasn't been easy.
Identifying and measuring bull markets is both art and science. One common measure says that a bull market exists when at least 80% of all stock prices rise over an extended period. Another measure says that a bull market exists if market indices rise at least +15%. Of course, different market sectors may experience bull markets at different times. The causes and characteristics of bull markets vary, but most financial theorists agree that both economic cycles and investor sentiment both play a role in the creation and momentum of bull markets.