Via Portal Submission

June 10, 2015

Christopher J. Kirkpatrick

Office of the Secretariat

Commodity Futures Trading Commission

Three Lafayette Centre

1155 21st Street, N.W.

Washington, D.C. 20581

Re: OneChicago, LLC Rule Submission

New OCX Rule 617 (Disruptive Practices) & NTM 2015-16

(OCX Submission Number 15-005)

Dear Mr. Kirkpatrick:

Pursuant to section 5c(c)(1) of the Commodity Exchange Act, as amended (the “Act”), and § 

40.6(a) of the regulations promulgated by the Commodity Futures Trading Commission 

(“CFTC” or the “Commission”) under the Act, OneChicago, LLC (“OneChicago,” “OCX,” or 

the “Exchange”) hereby submits the following rule change and corresponding Notice to 

Members (“NTM”), which will become effective on June 29, 2015. 

OneChicago is proposing to insert new OCX Rule 617 (Disruptive Practices) into the OCX 

Rulebook. New OCX Rule 617 will codify the prohibition of certain disruptive trading practices, 

including “spoofing.” The language of new OCX Rule 617 conforms to the text of Section 

4c(a)(5) of the Act. 

OneChicago is concurrently issuing NTM 2015-16. The purpose of NTM 2015-16 is to make 

market participants aware of new OCX Rule 617. The text of new OCX Rule 617 is attached as 

Attachment A and NTM 2015-16 is attached as Attachment B.

 

* * *

The purpose and effect of the rule is to prohibit certain disruptive trading practices, in 

accordance with Section 4c(a)(5) of the Act. Comments on this new rule have not been solicited 

and none have been received. OneChicago is not aware of any substantive opposing views to 

this rule. OneChicago certifies that the rule complies with the Act, including the core principles, 

and the Commission’s regulations promulgated thereunder. OneChicago further certifies that a 

311 S. WACKER DRIVE SUITE 1700 CHICAGO, IL 60606 T 312 883 3410 ONECHICAGO.COM
copy of this submission has been posted on the OneChicago website. OneChicago staff has 

reviewed the core principles applicable to designated contract markets (“DCMs”), and has 

concluded that the proposed rule may have some bearing upon the following core principles: 

Core Principle 2: Core Principle 2 requires that a DCM establish, monitor, and enforce 

compliance with the rules of the contract market, including abusive trade practices.

Core Principle 12: Core Principle 12 requires that a DCM establish and enforce rules that protect 

markets and market participants from abusive practices, and promote fair and equitable trading.

This new rule and associated NTM support Core Principles 2 and 12 in that they further

OneChicago’s ability to meet its self-regulatory obligations and prohibit certain disruptive 

trading practices.

If you have any questions or comments related to this filing, please feel free to contact me by 

telephone at (312) 883-3441 or through e-mail at wbarazi@onechicago.com. 

Respectfully Submitted,

Waseem Barazi

Chief Regulatory Officer and Associate General Counsel

Encl: Attachment A

Attachment B
Attachment A

617. Disruptive Practices

No Clearing Member, Exchange Member, or Access Person shall engage 

in any trading, practice, or conduct on the Exchange or subject to the Rules of the 

Exchange that:

(a) Violates bids or offers;

(b) Demonstrates intentional or reckless disregard for the orderly 

execution of transactions during the closing period; or

(c) Is, is of the character of, or is commonly known to the trade as 

“spoofing” (bidding or offering with the intent to cancel the bid or offer before 

execution).
Attachment B

(See Following Page)