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What in the world is margin trading?

It's no secret that the advent of credit did wonders to beef up our modern economy, and the stock market has been no exception. While most new investors buy stock through traditional cash accounts, which force you to pay for securities either by adding cash to the account or selling stock within three trading days of purchase, there is another way. It's the siren song of buying on margin, and while it can be a great way to get a little more return than your cash would normally net you, it also can lead to a quick dunk in some hot water.

Margin accounts allow investors to buy a lot of shares with a relatively small amount of cash up front by using the assets currently held in their accounts as collateral.

Mr. Greenspan and his cohorts at the Federal Reserve set the initial requirement needed to buy stock on margin. As of now it's 50 percent or $2,000 -- whichever is higher -- meaning that if you want to buy $10,000 worth of Intel you'd need assets worth at least $5,000 in your account, but if you wanted to buy $2,500 you'd need at least $2,000.

But the Fed isn't the only regulator in the margin game: Stock exchanges and brokerages also set their own requirements. Some, like Schwab for example, tend to be strict about buying penny stocks or highly volatile Internet stocks on margin. Others, such as Datek, are more lenient.

As in any borrower-lender relationship, brokerage firms make money on margin accounts by charging interest on the debit balance. Your equity in the account rises and falls as the price of the stock rises and falls but the debit balance remains the same -- except for the accruing interest, which is at an annual rate of anywhere from 8 percent to 10 percent at the moment -- until you repay the debit.

Here's how it works: Suppose you want to buy 100 shares of Intel on margin. If Intel is trading at $100 a share, that means you want to borrow $10,000. The 50 percent requirement means you need at least $5,000 cash in your margin account. Your broker then loans you the remaining $5,000. Your equity is $5,000 and your debit balance is $5,000, plus interest.

At the close of the day that you open the margin account, Intel has gone up to $110. The market value of your account is now $11,000. Your equity is now $5,998.75 -- $11,000 minus $5,001.25 (the debit balance plus annualized interest of 9%) -- that's nearly 500 bones you would not have made without that loan from your broker.

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Of course, stock prices fall as well as rise and that's where margin accounts get you into trouble. Suppose Intel drops to $90 a share. The market value of your account is now only $9,000. Your debit balance is still $5,001.25, but your equity is only $3,998.75 -- about a grand short of the originally required 50%.

Here's where it gets really tricky. Falling below the 50 percent threshold can trigger a "margin call" -- when brokers request additional funds or securities because the value of the account has fallen below the minimum. If you don't have the cash, they can liquidate the stock you bought on margin and any other stock in your account to raise enough cash to bring you back to the minimum.

As with most complicated investing plays -- like short selling -- investing on margin requires a lot of research and a big helping of guts. You should have good reason to believe a stock will rise and quickly, because if it's going to be an investment that more closely resembles the tortoise than the hare, the interest will likely negate your returns. And to avoid margin calls, leave yourself enough squish so that you don't begin with a 50 percent loan - try 10-20 percent to get a feel for how it works.

Just like credit, investing on margin can be a boon for those who know how to handle it; however, also like credit, there's always a chance that you'll dig yourself a hole.

-- Posted: March 1, 2000

 
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