A file extension is the characters after the last dot in a file name. For example, in the file name winmail.dat, the file extension is dat. It helps Windows select the right program to open the file.
Margin is borrowing money from your broker to buy a stock and using your investment as collateral. Investors generally use margin to increase their purchasing power so that they can own more stock without fully paying for it.But margin exposes investors to the potential for higher losses.ut if you bought the stock on margin  paying $25 in cash and borrowing $25 from your broker  you'll earn a 100 percent return on the money you invested. Of course, you'll still owe your firm $25 plus interest.
52 week low is the lowest sales price the stock has fallen to during the regular trading hours during the most recent 52 week period 97 20 66 55 market cap market capitalization is a measure of the estimated value of the common equity securities of the company or their equivalentoday s low the lowest sales price the stock has fallen to during the regular trading hours the intra day low 80 48 78 78 share volume share volume is the number of shares of the stock traded on the listing exchange during current trading hours it does not include after hours volume