V-trend

The v-trend statistic of a stock is the percent change of a stock's value in a day compared to the percent change in a related index's percent change for that day, and averaged over a certain period of days. This was created to see how historically how much the stock price acted "on its own", compared to the movement of the related index price. This highlights the effects of investor knowledge on the movement of stocks. For example, a small, relatively unknown company whose stock is mostly owned by index funds, would more likely go down in price if the index goes down in price regardless of the actual "real" performance of the company. If on the other hand the stock was featured heavily in the news reporting good earnings, people would be more likely to buy into the stock regardless of the current direction in the markets. An average in the present day, in the US major markets, stocks have a greater then 50 percent likelihood in moving in the same direction as their market index. The likelihood for an individual stock historically is its v-trend.