I usually do not know if a particular stock I want to purchase is of the margin variety or not. Generally, I find this out in the heat of doing an on-line purchase after checking data - after a considerable amount of work - only to find that the stock that I thought was a beauty is not margin-able. Is there a database available where a trader can type in a stock symbol and immediately know if it is of the margin variety or not? This would save me a considerable amount of work. Please help!