The U.S. government agency responsible for enforcing federal securities laws, proposing securities rules, and regulating the securities industry.
Excess return divided by volatility, measuring how much reward an investment delivers per unit of risk.
A trading strategy in which an investor borrows shares and sells them, hoping to buy them back later at a lower price to return to the lender and profit from the decline.
A company increasing its share count and cutting the price proportionally, leaving total value unchanged.
A standing instruction to sell once a security falls to a set price, capping downside on a position.