Self-Regulatory Organizations; Chicago Board Options Exchange, Incorporated; Notice of Filing of a Proposed Rule Change Related to Individual Stock Trading Pauses Due to Extraordinary Market Volatility

Pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 (the “Act”), and Rule 19b-4 thereunder, notice is hereby given that on May 18, 2010, the Chicago Board Options Exchange, Incorporated (the “Exchange” or “CBOE”) filed with the Securities and Exchange Commission (the “Commission”) the proposed rule change as described in Items I, II, and III below, which Items have been prepared by the Exchange. The Commission is publishing this notice to solicit comments on the proposed rule change from interested persons.

I. Self-Regulatory Organization's Statement of the Terms of Substance of the Proposed Rule Change

The Exchange is proposing to amend trading procedures on a pilot basis for certain stocks traded on the CBOE Stock Exchange (“CBSX”), the CBOE's stock trading facility. The text of the proposed rule change is available on the Exchange's Web site ( http://www.cboe.org/Legal ), at the Office of the Secretary, CBOE and at the Commission.

II. Self-Regulatory Organization's Statement of the Purpose of, and Statutory Basis for, the Proposed Rule Change

In its filing with the Commission, the self-regulatory organization included statements concerning the purpose of and basis for the proposed rule change and discussed any comments it received on the proposed rule change. The text of those statements may be examined at the places specified in Item IV below. The Exchange has prepared summaries, set forth in sections A, B, and C below, of the most significant parts of such statements.

A. Self-Regulatory Organization's Statement of the Purpose of, and the Statutory Basis for, the Proposed Rule Change

1. Purpose

The primary listing markets for U.S. stocks are in the process of amending their rules so that they may, from time to time, issue a trading pause for an individual stock if the price of such stock moves 10% or more from a sale in a preceding five-minute period. The Exchange is proposing the rule change described below in consultation with U.S. listing markets and Commission staff to provide for uniform market-wide trading pause standards for individual stocks in the S&P 500 Index that experience rapid price movement, as set forth below. The Exchange is not currently the primary listing market for any stocks, and thus, will not be issuing any trading pauses pursuant to its rules.

The Exchange proposes to add a new Rule 6.3C to allow CBSX to halt trading in an individual stock when the primary listing market for such stock issues a trading pause in any Circuit Breaker Stocks, as defined below and in proposed Rule 6.3C.03. CBSX will resume trading once trading has resumed on the primary listing market. If, however, trading has not resumed on the primary listing market after ten minutes have passed since the individual stock trading pause message has been received from the responsible single plan processor, CBSX may resume trading in such stock.

The proposed rule would apply to trading pauses issued by primary listing markets in “Circuit Breaker Stocks,” as defined in proposed Rule 6.3C.03. Specifically, on a pilot basis, set to end on December 10, 2010, Circuit Breaker Stocks would mean the stocks included in the S&P 500 Index. Thus, proposed Rule 6.3C would be in effect only with respect to stocks in the S&P 500 Index.

Upon reopening, a rotation shall be held in the individual stock on CBSX unless the Exchange concludes that a different method of reopening is appropriate under the circumstances, including but not limited to, no rotation, an abbreviated rotation or any other variation in the manner of the rotation. Lastly, nothing in the proposed Rule shall be construed to limit the ability of the Exchange to halt or suspend trading in any security or securities traded on the Exchange pursuant to any other Exchange rule or policy.

In addition to adding a new Rule 6.3C, the Exchange has also proposed minor changes to Rules 6.2B and 52.3. To make clear that the existing trading halt described in Rule 6.2B applies to all stocks traded on the Exchange, the Exchange has added the word “marketwide” to the title of Rule 6.2B. Finally, the Exchange has proposed to include a cross-reference to proposed Rule 6.2C in Rule 52.3.

2. Statutory Basis

Approval of the rule change proposed in this submission is consistent with the requirements of the Act and the rules and regulations thereunder that are applicable to a national securities exchange, and, in particular, with the requirements of Section 6(b) of the Act. In particular, the proposed change is consistent with Section 6(b)(5) of the Act, because it would promote just and equitable principles of trade, remove impediments to, and perfect the mechanism of, a free and open market and a national market system, and, in general, protect investors and the public interest. The proposed rule change is also designed to support the principles of Section 11A(a)(1) of the Act in that it seeks to assure fair competition among brokers and dealers and among exchange markets. The Exchange believes that the proposed rule meets these requirements in that it promotes transparency and uniformity across markets concerning decisions to pause trading in a stock when there are significant price movements.

B. Self-Regulatory Organization's Statement on Burden on Competition

CBOE does not believe that the proposed rule change will impose any burden on competition not necessary or appropriate in furtherance of the purposes of the Act.

C. Self-Regulatory Organization's Statement on Comments on the Proposed Rule Change Received from Members, Participants, or Others

No written comments were solicited or received with respect to the proposed rule change.

III. Date of Effectiveness of the Proposed Rule Change and Timing for Commission Action

Within 35 days of the date of publication of this notice in the Federal Register or within such longer period (i) as the Commission may designate up to 90 days of such date if it finds such longer period to be appropriate and publishes its reasons for so finding or (ii) as to which the self-regulatory organization consents, the Commission will:

(A) By order approve such proposed rule change, or

(B) Institute proceedings to determine whether the proposed rule change should be disapproved.

IV. Solicitation of Comments

Interested persons are invited to submit written data, views, and arguments concerning the foregoing, including whether the proposed rule change is consistent with the Act. Comments may be submitted by any of the following methods:

Electronic Comments

Use the Commission's Internet comment form ( http://www.sec.gov/rules/sro.shtml ); or

• Send an e-mail to rule-comments@sec.gov. Please include File Number SR-CBOE-2010-047 on the subject line.

Paper Comments

• Send paper comments in triplicate to Elizabeth M. Murphy, Secretary, Securities and Exchange Commission, 100 F Street, NE., Washington, DC 20549-1090.

All submissions should refer to File Number SR-CBOE-2010-047. This file number should be included on the subject line if e-mail is used. To help the Commission process and review your comments more efficiently, please use only one method. The Commission will post all comments on the Commission's Internet Web site ( http://www.sec.gov/rules/sro.shtml ). Copies of the submission, all subsequent amendments, all written statements with respect to the proposed rule change that are filed with the Commission, and all written communications relating to the proposed rule change between the Commission and any person, other than those that may be withheld from the public in accordance with the provisions of 5 U.S.C. 552, will be available for Web site viewing and printing in the Commission's Public Reference Room, 100 F Street, NE., Washington, DC 20549, on official business days between the hours of 10 a.m. and 3 p.m. Copies of such filing also will be available for inspection and copying at the principal office of the CBOE.

All comments received will be posted without change; the Commission does not edit personal identifying information from submissions. You should submit only information that you wish to make available publicly. All submissions should refer to File Number SR-CBOE-2010-047 and should be submitted on or before June 3, 2010.