Alexandra Twin has 15+ years of experience as an editor and writer, covering financial news for public and private companies. Robert Kelly is managing director of XTS Energy LLC, and has more than ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Sometimes we contract groups of words to make them shorter and to make the sentence more efficient. For example 'I am' becomes 'I'm'. They can help us speak a bit faster and more fluently. Conditional ...