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Allows investors to buy securities by borrowing money from a broker. The margin is the difference between the market value of a stock and the loan a broker makes. Related: Security deposit (initial). In the context of hedging and futures contracts, the cash collateral deposited with a trader or exchanged as insurance against default.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.


1. Money that an investor has borrowed from a broker in order to buy securities. An investor who buys on margin can realize huge gains if the price of the security moves in a favorable direction; however, he/she also takes on a great deal of risk because it may not move in such a direction. See also: minimum maintenance, margin call.

2. A measure of how well a company controls its costs. It is calculated by dividing a company's profit by its revenues and expressing the result as a percentage. The higher the margin is, the better the company is thought to control costs. Investors use the margin to compare companies in the same industry as well as between industries to determine which are the most profitable. It is also called the profit margin.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved


1. The amount of funds that must be deposited when purchasing securities. See also initial margin requirement.
2. The equity in an investor's account. See also maintenance margin requirement.
Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.


Margin is the minimum amount of collateral -- in either cash or securities -- you must have in your margin account to buy on margin, sell short, or invest in certain derivatives.

The initial margin requirement is set by federal law and varies from product to product. For example, to buy stock on margin, you must have at least 50% of the purchase price in your account.

After the initial transaction, maintenance rules set by the self-regulatory organizations, such as the New York Stock Exchange (NYSE) and NASD, apply.

Under those rules, you must have a minimum of 25% of the total market value of the margined investments in your account at all times. Individual firms may set their maintenance requirement higher -- at 30% or 35%, for example.

If your equity in the account falls below the maintenance level, you'll receive a margin call for additional collateral to bring the account value back above the minimum level.

Dictionary of Financial Terms. Copyright © 2008 Lightbulb Press, Inc. All Rights Reserved.


the difference between selling price and cost price of a PRODUCT or FINANCIAL SECURITY. See PROFIT MARGIN, SPREAD.
Collins Dictionary of Business, 3rd ed. © 2002, 2005 C Pass, B Lowes, A Pendleton, L Chadwick, D O’Reilly and M Afferson


On an ARM, an amount (usually two to three percentage points) that is added to the interest rate index to obtain the interest rate charged the borrower after the initial rate period ends.

See Adjustable Rate Mortgage (ARM)/How the Interest Rate on an ARM Is Determined.

The Mortgage Encyclopedia. Copyright © 2004 by Jack Guttentag. Used with permission of The McGraw-Hill Companies, Inc.


A percentage of the full price of a security that must be paid as a down payment by an investor buying on credit. The required margin fluctuates subject to federal regulations.
Copyright © 2008 H&R Block. All Rights Reserved. Reproduced with permission from H&R Block Glossary
References in periodicals archive ?
Type of surgical margins. In total, 40 patients (36.4%) had microscopically free resection margins, 55 (50.0%) had close resection margins (including the patient who died 12 days postoperatively, whose data are hereinafter not included in our analysis unless noted), and 15 (13.6%) had involved margins.
It also allows a precise removal of lesions with tiny and targeted surgical margins under microscopic guidance.
[23] reported that a surgeon's skill increases after the first 30 cases, with rates of compromised surgical margin falling from 45.4% to between 21.2 and 11.7%.
The excision area was enlarged and frozen section was repeated until the surgical margins were clean on examination.
A decrease in post operative +ve surgical margins is consistently reported along with decrease in biochemical recurrence but no effect on global or cancer specific survival was observed.24-26
N Average P MMP-2 Tumor 95 98.9160 0.0301 Margin 43 109.0237 Tumor mass, positive surgical margin 43 91.3581 0.1833 Tumor mass, negative surgical margin 52 105.1658 MMP-9 Tumor 106 142.1780 0.1214 Margin 45 171.0924 Tumor mass, positive surgical margin 45 157.2962 0.0121 Tumor mass, negative surgical margin 61 131.0252 TABLE 3: MMP-2 and MMP-9 expression in terms of total Gleason score and tumor stage and size.
Conclusion: In low-risk prostate cancer, a waiting time of less than six weeks between biopsy and surgery and PSA levels above 5 ng/mL are predictive of high surgical margin positivity after robotic radical prostatectomy.
The overall positive surgical margin rate for patients who had LRP was 18%, compared with 6% for those who underwent RALP.
With techniques such as Mohs surgery that allow for CCPDMA, nearly 100% of the surgical margin can be seen; by contrast, standard histology allows for visualization of only about 1% of the marginal surface, according to Dr.
Using hospital records, patients' age, preoperative PSA, platelet count, MPV and PMI value, NLR, tumor grade, Gleason score, tumor volume, lymph node involvement, surgical margin positivity, and biochemical recurrence at 3 months were analyzed.