As a resident of the US trading stocks in US you are subjected to Rules-based margin and Portfolio Margin. The complete margin requirement details are listed in the sections below.
The following calculations apply only to Margin, IRA Margin and Cash or IRA Cash. See our Portfolio Margin section for US Options requirements in a Portfolio Margin account.
FINRA and the NYSE have imposed rules to limit small investor day trading. Customers that these organizations classify as Pattern Day Traders are subject to special Day Trading Restrictions for U.S. and non-U.S. securities.
The following table shows stock margin requirements for initial (at the time of trade), maintenance (when holding positions), and Overnight Reg T (Regulatory End of Day Requirement) time periods.
|Initial Margin||25% 1 * Stock Value (minimum of $2,000 or 100% of the purchase price, whichever is less)|
|Maintenance Margin||25% * Stock Value|
|Reg T End of Day Initial Margin||50% * Stock Value|
|Cash or IRA Cash||100% * Stock Value|
|IRA Margin||Same as Cash|
30% 2 * Market Value of Stock, if Stock Value > $16.67 per share
$5.00 per share, if Stock Value < $16.67 and > $5.00
100% of Market Value of Stock, if Stock Value < $5.00
$2.50 per share, if Stock Value <= $2.50
|Maintenance Margin||Same as Initial Margin|
|Reg T End of Day Initial Margin||Same as Reg T End of Day for Long Positions.|
|Cash or IRA Cash||N/A|
|IRA Margin||Same as Cash|
|Initial Margin||100% * Stock Value|
|Maintenance Margin||Same as Initial Margin|
|Reg T End of Day Initial Margin||Same as Initial Margin|
|Cash, Individual or IRA||Same as Initial Margin, Only Long Positions|
We may reduce the collateral value of securities (reduces marginability) for a variety of reasons, including:
Changes in marginability are generally considered for a specific security. However, in cases of concerns about the viability or liquidity of a company, marginability reductions will apply to all securities issued by, or related to, the affected company, including fixed income, derivatives, depository receipts, etc.
See the section on Decreased Marginability Calculations on the Margin Calculations page for information about large position and position concentration algorithms that may affect the margin rate applied to a given security within an account and may vary between accounts.
FINRA and the NYSE have instituted regulations intended to limit the amount of trading that can be done in accounts with small amounts of capital, specifically accounts with less than 25,000 USD Net Liquidation Value. Pattern Day Trading rules will not apply to Portfolio Margin accounts.
The previous day's equity is recorded at the close of the previous day (4:15 PM ET). Previous day's equity must be at least 25,000 USD. However, net deposits and withdrawals that brought the previous day's equity up to or greater than the required 25,000 USD after 4:15 PM ET on the previous trading day are handled as adjustments to the previous day's equity, so that on the next trading day, the customer is able to trade.
For example, suppose a new customer's deposit of 50,000 USD is received after the close of the trading day. Even though his previous day's equity was 0 at the close of the previous day, we handle the previous day's late deposit as an adjustment, and this customer's previous day equity is adjusted to 50,000 USD and he is able to trade on the first trading day. Without this adjustment, the customer's trades would be rejected on the first trading day based on the previous day's equity recorded at the close.
Additional details relating to PDT regulations and our implementation of these rules can be found in the FAQ section.
FINRA and the NYSE define a Pattern Day Trader (PDT) as one who effects four or more day trades (same day opening and closing of a given equity security ("stock") or equity option) within a five business day period.
Note that Futures contracts and Futures Options are not included in the SEC Day Trade rule.
A potential pattern day trader error message means that an account has less than the SEC required $25,000 minimum Net Liquidation Value AND the number of available day trades (3) has already been used within the last five days.
The system is programmed to prohibit any further trades to be initiated in the account, regardless of the intent to day trade that position or not. The system is programmed to protect the accounts with less than $25,000 so the account would not "potentially" be flagged as a day trading account.
If an account receives the error message "potential pattern day trader", there is no PDT flag to remove. The account holder will need to wait for the five-day period to end before any new positions can be initiated in the account.
The customer has the following options:
If the intraday situation occurs, the customer will immediately be prohibited from initiating any new positions. Customers should be able to close any existing positions in his account, but will not be allowed to initiate any new positions.
The customer will have the same options listed above, however, if at any time the Net Liquidation Value figure goes back above the threshold amount ($25,000), then the account will once again have unlimited day trades available.
FINRA has provided brokerage firms the ability to remove the PDT flag from a customer's account once every 180 days. If an account was erroneously flagged, and the customer's intent is not to day trade in his/her account, we have the ability to remove this flag. Once the PDT flag is removed, the customer will then be allowed three day trades every five business days. If an account gets re-flagged as a PDT account within 180 days after the reset, the customer then has the following options:
FINRA and the NYSE define a Pattern Day Trader (PDT) as one who effects 4 or more day trades (same day purchase and sale of a given equity security ("stock") or equity option) within a five-day period, and NYSE and FINRA rules place certain restrictions on those who are deemed to be pattern day traders. If a customer account effects three (3) day trades involving stocks or equity options within any five (5) day period, we will require that such account satisfy the minimum Net Liquidation Value requirement of $25,000 before we will accept the next order to purchase or sell a stock or equity option. Once the account has effected a fourth day trade (in such 5 day period), we will deem the account to be a PDT account.
Pattern Day Trading regulations allow a broker to remove the PDT designation if the client acknowledges that she/he does not intend to engage in day trading strategies, and requests that the PDT designation be removed. If you wish to have the PDT designation for your account removed, provide us with the following information in a letter using the Customer Service Message Center in Account Management:
We will process your request as quickly as possible, which is usually within 24 hours.
For example, if the window reads (0,0,1,2,3), here is how to interpret this information:
If today was Wednesday, the first number within the parenthesis, 0, means that 0-day trades are available on Wednesday. The 2nd number in the parenthesis, 0, means that no day trades are available on Thursday. The 3rd number within the parenthesis, 1, means that on Friday 1-day trade is available. The 4th number within the parenthesis, 2, means that on Monday, if 1-day trade was not used on Friday, and then on Monday, the account would have 2-day trades available. The 5th number within the parenthesis, 3, means that if no day trades were used on either Friday or Monday, then on Tuesday, the account would have 3-day trades available.
Under SEC-approved Portfolio Margin rules and using our real-time margin system, our customers are able in certain cases to increase their leverage beyond Reg T margin requirements. For decades margin requirements for securities (stocks, options and single stock futures) accounts have been calculated under a Reg T rules-based policy. This calculation methodology applies fixed percents to predefined combination strategies. With Portfolio Margin, margin requirements are determined using a "risk-based" pricing model that calculates the largest potential loss of all positions in a product class or group across a range of underlying prices and volatilities. This model, known as the Theoretical Intermarket Margining System ("TIMS"), is applied each night to U.S. stocks, OCC stock and index options and U.S. single stock futures positions by the federally-chartered Options Clearing Corporation("OCC") and is disseminated by the OCC to participating brokerage firms each night. The minimum margin requirement in a Portfolio Margin account is static during the day because the OCC only disseminates the TIMS parameter requirements once per day.
However, Portfolio Margin compliance is updated by us throughout the day based on the real-time price of the equity positions in the Portfolio Margin account. Please note, at this time, Portfolio Margin is not available for U.S. commodities futures and futures options, U.S. bonds, Mutual Funds, or Forex positions, but U.S. regulatory bodies may consider inclusion of these products at a future date.
Portfolio or risk based margin has been utilized for many years in both commodities and many non-U.S. securities markets, with great success. Dependent upon the composition of the trading account, Portfolio Margin may require a lower margin than that required under Reg T rules, which translates to greater leverage. Trading with greater leverage involves greater risk of loss. There is also the possibility that, given a specific portfolio composed of positions considered as having higher risk, the requirement under Portfolio Margin may be higher than the requirement under Reg T. Part of the reasoning behind the creation of Portfolio Margin is that the margin requirements would more accurately reflect the actual risk of the positions in an account. Thus, it is possible that, in a highly concentrated account, a Portfolio Margin approach may result in higher margin requirements than under Reg T. One of the main goals of Portfolio Margin is to reflect the lower risk inherent in a balanced portfolio of hedged positions. Conversely, Portfolio Margin must assess proportionately larger margin for accounts with positions which represent a concentration in a relatively small number of stocks.
Customers must meet the following eligibility requirements to open a Portfolio Margin account:
Under Portfolio Margin, trading accounts are broken into three component groups: Class groups, which are all positions with the same underlying; Product groups, which are closely related classes; and Portfolio groups, which are closely related products. Examples of classes would include IBM, SPX, and OEX. A product example would be a Broad Based Index composed of SPX, OEX, etc. A portfolio could include such products as Broad Based Indices, Growth Indices, Small Cap Indices, and FINRA Indices.
The portfolio margin calculation begins at the lowest level, the class. All positions with the same class are grouped and stressed (underlying price and implied volatility are changed) together with the following parameters:
In addition to the stress parameters above the following minimums will also be applied:
All of the above stresses are applied and the worst case loss is the margin requirement for the class. Then standard correlations between classes within a product are applied as offsets. As an example, within the Broad Based Index product 90% offset is allowed between SPX and OEX. Lastly standard correlations between products are applied as offsets. An example would be a 50% offset between Broad Based Indices and Small Cap Indices. For stocks and Single Stock Futures offsets are only allowed within a class and not between products and portfolios. After all the offsets are taken into account all the worst case losses are combined and this number is the margin requirement for the account. For a complete list of products and offsets, see the Appendix-Product Groups and Stress Parameters section at the end of this document.
Our real-time, intra-day margining system enables us to apply the Day Trading Margin Rules to Portfolio Margin accounts based on real-time equity, so Pattern Day Trading Accounts will always be able to trade based on their full, real-time buying power.
Because of the complexity of Portfolio Margin calculations it would be extremely difficult to calculate margin requirements manually. We encourage those interested in Portfolio Margin to use our TWS Portfolio Margin Demo to understand the impact of Portfolio Margin requirement under different scenarios.
Click here for the OCC's published list of Product Groups and Offset Parameters.
The risk of loss in online trading of stocks, options, futures, currencies, foreign equities, and fixed income can be substantial. Options are not suitable for all investors. For more information read the "Characteristics and Risks of Standardized Options". For a copy click here.
Your capital is at risk and your losses may exceed the value of your original investment.
Interactive Brokers (U.K.) Limited is authorised and regulated by the Financial Conduct Authority. FCA Reference Number 208159.
Interactive Brokers LLC is regulated by the US SEC and CFTC and is a member of the SIPC (www.sipc.org) compensation scheme;
products are only covered by the UK FSCS in limited circumstances.
Before trading, customers must read the relevant risk disclosure statements on our Warnings and Disclaimers page.
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