Commodity Futures & Futures Options Position Limits

Regulators and exchanges typically impose limits on the number of commodity positions any customer may maintain with the intent of controlling excessive speculation, deterring market manipulation, ensuring sufficient market liquidity for bona fide hedgers and to prevent disruptions to the price discovery function of the underlying market. These limits are intended as strict caps, with no one account or group of related accounts allowed to aggregate or maintain a position in excess of the stated limit. Outlined below is an overview of the various limit types, calculation considerations, enforcement and links for finding additional information.


Position limits generally fall into one of the following 4 categories:

1. All Months Limit - apply to the account holder's positions summed across all delivery months for a given contract (e.g. positions in CBOT Oat futures contract for the Mar, May, Jul, Sep and Dec delivery months combined).

2. Single Month Limit - apply to the account holder's positions in any given futures delivery month (e.g. positions in CBOT Oat futures contract for any of the Mar, May, Jul, Sep and Dec delivery months). Note that in certain instances, the limit may vary by delivery month.

3. Spot Month Limit - apply to the account holder's positions in the contract month currently in delivery. For example, the March contract month for a product having delivery months of March, June, September and December, while considered a nearby month at the start of the year, does not become a spot month contract for position limit purposes until the date it actually enters delivery. Most spot month limits become effective at the close of trading on the day prior to the First Notice Date (e.g., if the First Notice Date for a Dec contract is the last trading date of the prior month, then the spot month limit would apply as of the close of business on Nov 29th). In other instances, the limit goes into effect or tightens during the last 3-10 days of trading.

4. Expiration Month Limit - expiration month limits apply to the account holder's positions in the contract currently in its last month of trading.  Most expiration month limits become effective at the open of trading on the first business day of the last trading month.  If the contract ceases trading before delivery begins, then the expiration month may precede the delivery month. (e.g., if the last trade date for a Dec contract is Nov 30th, then the expiration month limit would apply as Nov 1st). In other instances, the limit goes into effect or tightens during the last 3-10 days of trading.



- Position limits are determined by aggregating option and futures contracts. In the case of option contracts, the position is converted to an equivalent futures position based upon the delta calculations provided by the exchange.

- Positions in contracts with non-standard notional values (e.g. mini-sized contracts) are normalized prior to aggregation.

- Most limits are applied on a net position basis (long - short) although certain are applied on a gross position basis (long + short). For purposes of determining the net or gross position, long calls and short puts are considered equivalent to long futures positions (subject to the delta adjustment) and short calls and long puts equivalent to short futures positions.

- Limits are imposed on both an intra-day and end of day basis.



IB acts to prevent account holders from entering into transactions which would result in a position limit violation. This process includes monitoring account activity, sending a series of notifications intended to allow the account holder to self-manage exposure and placing trading restrictions upon accounts approaching a limit. Examples of notifications which are sent via email, TWS bulletin and Message Center are as follows:

1. Information Level - sent when the position exceeds 50% of the limit. Intended to inform as to the existence of the position limit and its level.

2. Warning Level - sent when the position exceeds 70% of the limit. Intended to provide advance warning that account will be subject to trading restrictions should exposure increase to 90%.

3. Restriction Level - sent when the position exceeds 90% of the limit. Provides notice that account is restricted to closing transactions until exposure has been reduced to 85%.



For additional information, including various exchange rules position limit thresholds by contract and limit type, please refer to the following website links:

CFE ( Rule 412) -

CME (Rule 559) -

CME (CBOT Rule 559) -

CME (NYMEX Rule 559) -

ELX Futures (Rule IV-11) -

ICE US / NYBOT (Rules 6.26 to 6.28) -

NYSE LIFFE (Rule 420) -

OneChicago (Rule 414) -



SEC Large Trader Reporting Rule


The SEC has enacted a "large trader" reporting rule requiring both foreign and domestic persons or entities employing such persons, including investment advisers, to register with the SEC via Form 13H and obtain a Large Trader Identification Number (LTID) if you are a "Large Trader" as defined by the rule. Once obtained, you are required to provide the LTID to IB and indicate to which account(s) it is applicable.


In light of the rapid development in trading technology and strategies, the SEC has been conducting an in-depth review of the changes to the structure of the U.S. markets. Because of these changes, the SEC is exercising its  authority under Section 13(h) of the Securities Exchange Act of 1934 to establish the Large Trader Reporting Rule.

Who Is a "Large Trader"?
"Large Trader" is defined as a person or entity who, directly or indirectly, through the exercise of "Investment Discretion," effects transactions in exchange-listed equities and options that equal or exceed 2 million shares or $20 million during any calendar day, or 20 million shares or $200 million over the course of any calendar month.

Investment Discretion is defined broadly to include all types of discretion involving decisions to buy or sell exchange-listed equities or options. Large Trader status applies to the adviser or agent having trading discretion over an account - not to the account or to the beneficial owner of the account if they are not the party exercising investment discretion.

The Large Trader Rule applies to any type of agent having Investment Discretion over an account, including broker-dealers, and requires each Large Trader to register if the defined trigger levels are met. Large Traders include regulated and unregulated entities as well as domestic and foreign persons. Individuals trading for their own account or for an LLC or other entity holding their own assets are also subject to the registration requirements of the Rule.  Also note that for the purpose of determining the value of shares traded, each option contract is assumed to be equal to 100 shares of its underlying security (or other share equivalent, if adjusted by OCC).


Dollar Calculation for Options

Dollars traded = option contracts traded * option multiplier (typically 100) * the market price of the options.

Ex., If ABC has a multiplier of 100, a person who purchased 200 ABC call options for $400 each would have effected an aggregate transaction of $8 million (i.e., 200 * 400 * 100 = $8,000,000).


The Rule contains the following requirements:

Filing a Form: A trader who engages in a substantial level of trading activity is required to analyze whether they meet the definition of Large Trader and, if they qualify, identify them self to the SEC by filing a Form 13H with the Commission. The rule provides guidance on certain types of transactions that are excluded for purposes of  calculating trading levels.

Getting an Identification Number: After a large trader submits a Form 13H to the SEC, they will be assigned a Large Trader Identification Number (LTID). A large trader will be required to disclose to its broker-dealers its LTID and indicate to which accounts the LTID applies. This disclosure requirement applies not only to broker-dealers that carry the accounts (including prime brokers and clearing brokers) but also to executing brokers, such as Interactive Brokers.

Recordkeeping, Reporting, and Monitoring: The rule requires broker-dealers to maintain and report data when requested by the SEC. In addition, the rule requires broker-dealers to monitor whether their customers meet the threshold levels that define a Large Trader (based on transactions handled at the broker-dealer) in order to encourage compliance with the requirement for customers to identify themselves as Large Traders to the SEC.


Timing and Types of 13H Filings
Form 13H provides for six types of filings:

  • Initial Filing: A person must "promptly" file an initial Form 13H after its transactions reach the identifying activity level. The SEC states that under normal circumstances, "promptly" means 10 days.
  • Annual Filing: After its initial filing, Large Traders must file an annual Form 13H within 45 days after the end of each full calendar year.
  • Amended Filing: In the event any of the information in its Form 13H becomes inaccurate for any reason, Large Traders must file an amended 13H following the end of the calendar quarter.
  • Inactive/Reactivated Filing: A Large Trader that ceases to meet the identifying activity level during the previous full calendar year may file an inactive status Form 13H, which permits such trader to cease both filing a Form 13H and disclosing its Large Trader status. In the event such trader's transactions once again meet the identifying activity level, it must submit a reactivated status Form 13H.
  • Termination Filing: A Large Trader that ceases operations or, in some cases, is acquired, may file a termination Form 13H terminating its Large Trader status.


Voluntary Filing & Confidentiality
A Trader can file Form 13H on a voluntary basis instead of when trading thresholds are met in order to avoid the requirement to monitor their own trading levels and to aggregate trading activity across accounts they manage or entities under common control. As a result, a trader can ensure full compliance with the Rule through voluntary filing.
Large Trader Form 13H filings are not accessible to the public. All registration information provided to the SEC by large traders is confidential and is also exempt from disclosure under the Freedom of Information Act.

For complete details regarding the Large Trader Rule, please see the SEC release at:

For responses to frequently asked questions concerning large trader reporting, including how to access the form, please refer to:

Details on how to file Form 13H electronically through EDGAR can be reviewed at:

Securities Account Protection for Interactive Brokers India Customers

Customer accounts domiciled under Interactive Brokers India Pvt. Limited,(IBI) are awarded different account protection services than our IB-LLC and IB-UK clients. There are two major exchanges, the National Stock Exchange of India (NSE) and the Bombay Stock Exchange (BSE), each one has established their own guidelines for investor grievances against exchange members and/or sub –brokers.

National Stock Exchange of India (NSE)

The NSE has established an Investor Protection Fund with the objective of compensating investors in the event of defaulters' assets not being sufficient to meet the admitted claims of investors, promoting investor education, awareness and research. The Investor Protection Fund is administered by way of registered Trust created for the purpose. The Investor Protection Fund Trust is managed by Trustees comprising of Public representative, investor association representative, Board Members and Senior officials of the Exchange.

The Investor Protection Fund Trust, based on the recommendations of the Defaulters' Committee, compensates the investors to the extent of funds found insufficient in Defaulters' account to meet the admitted value of claim, subject to a maximum limit of Rs. 11 lakhs (1.1 million USD) per investor per defaulter/expelled member.

Bombay Stock Exchange (BSE)

Currently trading is not offered on the BSE by Interactive Brokers.

Equity & Index Option Position Limits


Equity option exchanges define position limits for designated equity options classes.  These limits define position quantity limitations in terms of the equivalent number of underlying shares (described below) which cannot be exceeded at any time on either the bullish or bearish side of the market.  Account positions in excess of defined position limits may be subject to trade restriction or liquidation at any time without prior notification.


Position limits are defined on regulatory websites and may change periodically.  Some contracts also have near-term limit requirements (near-term position limits are applied to the side of the market for those contracts that are in the closest expiring month issued).  Traders are responsible for monitoring their positions as well as the defined limit quantities to ensure compliance.  The following information defines how position limits are calculated;


Option position limits are determined as follows:

  • Bullish market direction -- long call & short put positions are aggregated and quantified in terms of equivalent shares of stock.
  • Bearish market direction -- long put & short call positions are aggregated and quantified in terms of equivalent shares of stock.

The following examples, using the 25,000 option contract limit, illustrate the operation of position limits:

  • Customer A, who is long 25,000 XYZ calls, may at the same time be short 25,000 XYZ calls, since long and short positions in the same class of options (i.e., in calls only or in puts only) are on opposite sides of the market and are not aggregated
  • Customer B, who is long 25,000 XYZ calls, may at the same time be long 25,000 XYZ puts. Rule 4.11 does not require the aggregation of long call and long put (or short call and short put) positions, since they are on opposite sides of the market.
  • Customer C, who is long 20,000 XYZ calls, may not at the same time be short more than 5,000 XYZ puts, since the 25,000 contract limit applies to the aggregate position of long calls and short puts in options covering the same underlying security. Similarly, if Customer C is also short 20,000 XYZ calls, he may not at the same time have a long position of more than 5,000 XYZ puts, since the 25,000 contract limit applies separately to the aggregation of short call and long put positions in options covering the same underlying security.


Notifications and restrictions:


IB will send notifications to customers regarding the option position limits at the following times:

  • When a client exceeds 85% of the allowed limit IB will send a notification indicating this threshold has been exceeded
  • When a client exceeds 95% of the allowed limit IB will place the account in closing only. This state will be maintained until the account falls below 85% of the allowed limit. New orders placed that would increase the position will be rejected.



Position limits are set on the long and short side of the market separately (and not netted out).
Traders can use an underlying stock position as a "hedge" if they are over the limit on the long or short side (index options are reviewed on a case by case basis for purposes of determining which securities constitute a hedge).
Position information is aggregated across related accounts and accounts under common control.


Definition of related accounts:

IB considers related accounts to be any account in which an individual may be viewed as having influence over trading decisions. This includes, but is not limited to, aggregating an advisor sub-account with the advisor's account (and accounts under common control), joint accounts with individual accounts for the joint parties and organization accounts (where an individual is listed as an officer or trader) with other accounts for that individual.


Position limit exceptions:

Regulations permit clients to exceed a position limit if the positions under common control are hedged positions as specified by the relevant exchange. In general the hedges permitted by the US regulators that are recognized in the IB system include outright stock position hedges, conversions, reverse conversions and box spreads. Currently collar and reverse collar strategies are not supported hedges in the IB system. For more detail about the permissible hedge exemptions refer to the rules of the self regulatory organization for the relevant product.

OCC posts position limits defined by the option exchanges.   They can be found here.

Priority or Professional Customer Orders

In the 4th quarter of 2009, certain U.S. option exchanges (CBOE, ISE) implemented rules which serve to distinguish orders originating from a group of public customers deemed to be "Professional" (i.e., persons or entities having access to information and/or technology which enables them to trade in a manner as a broker dealer) as opposed to retail.  In accordance with these rules, any customer account which is not a broker dealer and which places more than 390 listed option orders (whether executed or not) on a daily average across all option exchanges in a given month for its own beneficial account(s) will be classified as Professional. Since the original implementation by CBOE and ISE, most other U.S. options exchanges have similarly implemented rules to distinguish orders as "Professional" in origin.

Orders submitted on behalf of Professional customers to these option exchanges will be treated the same as broker dealers for purposes of execution priority and will be subject to a per contract transaction fee ranging from rebates of ($0.65) to a charge of $1.12 (depending upon the class of options). 

Brokers are required to conduct a review on a calendar quarter basis to identify those customers who have exceeded the 390 order threshold for any month in that quarter and who are to be designated as Professional for the next calendar quarter. Note that for purposes of this rule, spread orders are considered a single order, rather than each leg of the spread as an individual order. Customers impacted by these rules will be notified by IB.  In addition, IB's Smart order router is designed to take these new exchange fees into consideration when making routing decisions.

For additional details, please see the following links:

ISE Regulatory Circular 2009-179

CBOE Regulatory Circular RG09-148

Why am I required to disclose my employment with a financial institution?

Rule 407 of the New York Stock Exchange prohibits a member organization (i.e., IB) from opening a securities or commodities account or executing any transaction for an account in which an exchange member, employee associated with another exchange member or member organization or an exchange employee is directly or indirectly interested without prior written consent of the employer.  The rule also requires IB to promptly submit to the account holder's employer duplicate account statements and confirmations.

Applicants who designate employment or affiliation with another broker are required to submit a Rule 407 letter containing the email address of their organization in order to provide notification and consent to the employer and for the purpose of transmitting statements and confirmations.  If the employment is with a financial institution and  no such Rule 407 letter is submitted, IB's Compliance Department will typically contact the applicant in order to confirm that Rule 407 does not apply.

Rule 611 of SEC Regulation NMS


Executions in equities will sometimes be listed as R6, which is short for Rule 611 of SEC Regulation NMS.  This condition code indicates that the execution(s) in question is not subject to trade-through rules.  R6 trades are given an SEC exemption.

Rule 611, which is the Trade Through Exemption of SEC Regulation NMS, is very lengthy to cover in detail.  Parties interested in reading the rule in its entirely should type "SEC Rule 611" into an internet search engine.  This is the portion of the document that is pertinent to IB traders, in a nutshell:

Typically the trades involved are a multi-component trade involving orders for a security and a related derivative, or, in the alternative, orders for related securities, that are executed at or near the same time.  The SIA (Securities Industry Association) notes that the economics of a contingent trade are based on the relationship between the prices of the security and the related derivative or security, and that the execution of one order is contingent upon the execution of the other order. 

The bottom line is that when a trade is ruled R6 the SEC has granted a trade-through exemption.  This means that these execution reports do not affect the resting orders in-between the market at the time, and the R6 execution.  For example, the real market is quoting 10.50 at 10.51, and an execution is reported at 10.90.  This execution was given an R6 exemption.  A sell limit order at 10.75, an an example, would not be executed because the 10.90 execution was given an R6 status. 

I receive a rejection on my futures option orders for DAX which says "No Trading Regulation", why?

U.S. residents are unable to trade options on futures for most foreign indicies, such as the DAX. 

Determining SIPC coverage where multiple accounts exist

Multiple accounts maintained in the same name and taxpayer ID number are grouped for purposes of applying the maximum per client protection limits of $500,000 by SIPC and $29.5 million under Lloyd’s supplementary protection. However, if you hold accounts with IBKR in separate capacities (for example, an account in your name, a trust account of which you are the trustee or a beneficiary, or a joint account), then each account would be protected by SIPC and the supplementary protection up to the stated limits.


Account Protection


How can my employer get set up in order to receive duplicate copies of my trade confirmations and statements?

In order for an employer to be set up so as to received this information, you will need to have them prepare and email to a Rule 407 letter which confirms your employment and which serves as their request to receive duplicate statements and trade confirms. Assuming that your employer is a financial institution which, for in-house compliance purposes and/or as a result of regulatory mandate monitors the trading activities of their employees, they should be familiar with the preparation and contents of this letter. 

You may also want to first verify with your employer whether they are a participant in the IBEmployeeTrackSM program which automatically identifies new IB accounts opened by employees and organizes into a single daily transmission the reports required for all.


Note that once established, this reporting cannot be terminated without confirmation from the employer that the delivery of statements and confirms is no longer required.



If this request is being driven by a change in the account holder's employment, the account holder should update their employment information within Account Management. In addition, if the account holder selects the Applicant Information and then Regulatory Information menu options within Account Management they will be presented with the following question:

Is the account holder or any immediate family member who resides in the same household, registered as a broker-dealer or an employee, director or owner of a securities or commodities brokerage firm?

Answering 'Yes' to that question will prompt a series of questions and generate a sample Rule 407 letter.

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