Papule and Plaque. A papule (/ËpÃ¦pjuËl/) is a circumscribed, solid elevation of skin with no visible fluid, varying in size from a pinhead to 1 cm. It can be brown, purple, pink or red in color, and can cluster into a papular rash. Papules may open when scratched and become infected and crusty.
Stock is an equity investment that represents part ownership in a corporation and entitles you to part of that corporation's earnings and assets. Common stock gives shareholders voting rights but no guarantee of dividend payments. Preferred stock provides no voting rights but usually guarantees a dividend payment.
Stock volatility is just a numerical indication of how variable the price of a specific stock is. However, stock volatility is often misunderstood. Some think it refers to risk involved in owning a particular company's stock. Some assume it refers to the uncertainty inherent in owning a stock. Neither is the case. For investors it represents an important measure of how desirable it is to own a certain stock, based on the investor's appetite for risk and reward. Here's how to calculate stock volatility.