Want an efficient portfolio? Try this model

Researchers have devised a method that could help some traders, including those managing large portfolios or those working in statistical arbitrage groups who are seeking to capitalize on pricing inefficiencies between securities. 

How to get yourself to skip that latte, and save money

Few people excel at making sacrifices, however small, to save for the future. Self-help author David Bach has dubbed this “the latte factor”—people have trouble skipping small indulgences, such as a daily $4 latte, even if they’d save a lot of money in the long run.