Mean variance analysis is a component of modern portfolio theory, which assumes investors make rational decisions, and that for increased risk they expect a higher return. Next Up.
sitâ²-in`. 1. an organized passive protest against racial segregation in which the demonstrators occupy seats prohibited to them in public places. 2. any organized protest in which the demonstrators occupy and refuse to leave a public place.
Lean in. Lean in means to grab opportunities without hesitation. An older meaning for lean in is to incline into something, such as a skier leaning in at a turn or pedestrian leaning in to the wind during a heavy gale. In 2013, Sheryl Sandburg published a book called Lean In: Women, Work, and the Will to Lead.