Federal Register Recent Federal Regulation Documents - Justia Regulation Tracker - Justia Regulations Trackerhttps://regulations.justia.com/regulations/fedreg/agencies/securities-and-exchange-commission/2008/06?limit=200®isters=between&min-day=1&max-day=30&mode=atom2024-05-20T11:06:14-07:00Justia Inchttps://www.justia.com/Justia Regulations Trackerhttps://regulations.justia.com/images/justiafedregulations.gifCopyright 2011 Justia Inchttps://regulations.justia.com/regulations/fedreg/2008/06/30/E8-14767.htmlNotice - Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Order Granting Accelerated Approval of Proposed Rule Change To List and Trade Options on Reduced Values of the FTSE 100 Index and the FTSE 250 Index2008-06-30T00:00:00-07:002008-06-30T00:00:00-07:00E8-14767Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-30/pdf/E8-14767.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/30/E8-14766.htmlNotice - Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Amending its Schedule of Fees and Charges for Exchange Services2008-06-30T00:00:00-07:002008-06-30T00:00:00-07:00E8-14766Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-30/pdf/E8-14766.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/30/E8-14765.htmlNotice - Self-Regulatory Organizations; International Securities Exchange, LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Relating to the Definition of Qualified Contingent Trade2008-06-30T00:00:00-07:002008-06-30T00:00:00-07:00E8-14765Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-30/pdf/E8-14765.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/30/E8-14764.htmlNotice - Self-Regulatory Organizations; Chicago Board Options Exchange, Incorporated; Notice of Filing of Proposed Rule Change Relating to the Hybrid Opening System2008-06-30T00:00:00-07:002008-06-30T00:00:00-07:00E8-14764Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-30/pdf/E8-14764.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/30/E8-14762.htmlNotice - Self-Regulatory Organizations; Chicago Board Options Exchange, Incorporated; Notice of Filing of Proposed Rule Change To Amend CBOE Rule 8.7 Related to the Obligations of Market-Makers2008-06-30T00:00:00-07:002008-06-30T00:00:00-07:00E8-14762Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-30/pdf/E8-14762.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/30/E8-14761.htmlNotice - Self-Regulatory Organizations; Chicago Board Options Exchange, Incorporated; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Regarding Fees for the CBOE Stock Exchange2008-06-30T00:00:00-07:002008-06-30T00:00:00-07:00E8-14761Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-30/pdf/E8-14761.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/30/E8-14657.htmlNotice - Self-Regulatory Organizations; The Options Clearing Corporation; Notice of Filing and Order Granting Accelerated Approval of a Proposed Rule Change Relating to Range Options2008-06-30T00:00:00-07:002008-06-30T00:00:00-07:00E8-14657Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-30/pdf/E8-14657.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/27/E8-14611.htmlNotice - Sunshine Act Meeting2008-06-27T00:00:00-07:002008-06-27T00:00:00-07:00E8-14611Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-27/pdf/E8-14611.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/27/E8-14568.htmlNotice - [Release No. 34-58004; File No. SR-FINRA-2008-009] Self- Regulatory Organizations; Financial Industry Regulatory Authority, Inc.; Order Approving Proposed Rule Change to the Code of Arbitration Procedure for Customer Disputes and the Code of Arbitration Procedure for Industry Disputes To Amend the Chairperson Eligibility Requirements2008-06-27T00:00:00-07:002008-06-27T00:00:00-07:00E8-14568Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-27/pdf/E8-14568.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/27/E8-14566.htmlNotice - Self-Regulatory Organizations; Philadelphia Stock Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change Relating to Catastrophic Errors2008-06-27T00:00:00-07:002008-06-27T00:00:00-07:00E8-14566Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-27/pdf/E8-14566.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/26/E8-14530.htmlNotice - Order Granting Temporary Exemption of Realpoint LLC From the Conflict of Interest Prohibition in Rule 17a-5(c)(1) Under the Securities Exchange Act of 19342008-06-26T00:00:00-07:002008-06-26T00:00:00-07:00E8-14530Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-26/pdf/E8-14530.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/26/E8-14529.htmlNotice - Securities Exchange Act of 1934; Order Granting Registration of Realpoint LLC as a Nationally Recognized Statistical Rating Organization2008-06-26T00:00:00-07:002008-06-26T00:00:00-07:00E8-14529Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-26/pdf/E8-14529.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/26/E8-14500.htmlNotice - Self-Regulatory Organizations; International Securities Exchange, LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change Relating to Fee Changes2008-06-26T00:00:00-07:002008-06-26T00:00:00-07:00E8-14500Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-26/pdf/E8-14500.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/26/E8-14499.htmlNotice - Self-Regulatory Organizations; International Securities Exchange, LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Relating to Fee Changes2008-06-26T00:00:00-07:002008-06-26T00:00:00-07:00E8-14499Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-26/pdf/E8-14499.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/26/E8-14466.htmlNotice - Self-Regulatory Organizations; Financial Industry Regulatory Authority, Inc.; Notice of Filing of Proposed Rule Change To Align the Reporting Requirements and Dissemination Protocols for OTC Equity Transactions Involving Foreign Securities With All Other OTC Equity Securities2008-06-26T00:00:00-07:002008-06-26T00:00:00-07:00E8-14466Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-26/pdf/E8-14466.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/26/E8-14404.htmlNotice - Submission for OMB Review; Comment Request2008-06-26T00:00:00-07:002008-06-26T00:00:00-07:00E8-14404Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-26/pdf/E8-14404.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/25/E8-14330.htmlNotice - Program for Allocation of Regulatory Responsibilities Pursuant to Rule 17d-2; Notice of Filing and Order Approving and Declaring Effective an Amendment to the Plan for the Allocation of Regulatory Responsibilities Among the American Stock Exchange, LLC, the Boston Stock Exchange, Inc., the Chicago Board Options Exchange, Incorporated, the International Securities Exchange, LLC, Financial Industry Regulatory Authority, Inc., the New York Stock Exchange, LLC, the NYSE Arca, Inc., The NASDAQ Stock Market, LLC, and the Philadelphia Stock Exchange, Inc2008-06-25T00:00:00-07:002008-06-25T00:00:00-07:00E8-14330Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-25/pdf/E8-14330.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/25/E8-13887.htmlProposed Rule - Proposed Rules for Nationally Recognized Statistical Rating Organizations2008-06-25T00:00:00-07:002008-06-25T00:00:00-07:00E8-13887Proposed Rulehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-25/pdf/E8-13887.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/25/08-1388.htmlNotice - In the Matter of: Acclaim Entertainment, Inc., Benguet Corp., Clean Systems Technology Group, Ltd., Family Golf Centers, Inc., Graham-Field Health Products, Inc., Lechters, Inc., Symbiat, Inc., Texfi Industries, Inc., and Value Holdings, Inc. (n/k/a Galea Life Sciences, Inc.); Order of Suspension of Trading2008-06-25T00:00:00-07:002008-06-25T00:00:00-07:0008-1388Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-25/pdf/08-1388.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/24/E8-14217.htmlNotice - Advisory Committee on Improvements to Financial Reporting2008-06-24T00:00:00-07:002008-06-24T00:00:00-07:00E8-14217Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-24/pdf/E8-14217.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/24/E8-14178.htmlNotice - Self-Regulatory Organizations; The NASDAQ Stock Market, LLC; Order Approving Proposed Rule Change To Modify Certain of Nasdaq's Initial and Continued Listing Requirements To Replace the Round Lot Requirement in the Minimum Holder Requirements to Either Total or Public Shareholders2008-06-24T00:00:00-07:002008-06-24T00:00:00-07:00E8-14178Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-24/pdf/E8-14178.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14166.htmlNotice - Sunshine Act Meeting2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14166Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14166.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14160.htmlNotice - Sunshine Act Meeting2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14160Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14160.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14105.htmlNotice - Self-Regulatory Organizations; The NASDAQ Stock Market LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Modify the Opening of Trading on the NASDAQ Options Market2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14105Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14105.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14104.htmlNotice - Self-Regulatory Organizations; The NASDAQ Stock Market LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change and Amendment No. 1 Thereto Regarding Nasdaq Last Sale Data Feeds2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14104Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14104.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14081.htmlNotice - Submission for OMB Review; Comment Request; “Tell Us How We're Doing!”2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14081Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14081.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14080.htmlNotice - Submission for OMB Review; Comment Request2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14080Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14080.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14079.htmlNotice - Proposed Collection; Comment Request2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14079Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14079.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-14060.htmlNotice - Self-Regulatory Organizations; International Securities Exchange, LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Regarding Fees for Enhanced Sentiment Market Data2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-14060Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-14060.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/E8-13356.htmlProposed Rule - Interactive Data for Mutual Fund Risk/Return Summary2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:00E8-13356Proposed Rulehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/E8-13356.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/23/08-1376.htmlNotice - Kafus Industries, Ltd., Kevco, Inc., and Kings Road Entertainment, Inc.; Order of Suspension of Trading2008-06-23T00:00:00-07:002008-06-23T00:00:00-07:0008-1376Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-23/pdf/08-1376.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/20/E8-13996.htmlNotice - Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change Relating to the Listing and Trading of Shares of the First Trust ISE Global Wind Energy Index Fund2008-06-20T00:00:00-07:002008-06-20T00:00:00-07:00E8-13996Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-20/pdf/E8-13996.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/20/E8-13956.htmlNotice - Self-Regulatory Organizations; New York Stock Exchange LLC; Notice of Filing of Amendment Nos. 1 and 2 and Order Granting Accelerated Approval to Proposed Rule Change, as Modified by Amendment Nos. 1 and 2 Thereto, Relating to Approval of Fee for NYSE Real-Time Reference Prices2008-06-20T00:00:00-07:002008-06-20T00:00:00-07:00E8-13956Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-20/pdf/E8-13956.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/20/E8-13955.htmlNotice - Self-Regulatory Organizations; The NASDAQ Stock Market LLC; Notice of Filing of Amendment No. 2 and Order Granting Accelerated Approval to Proposed Rule Change, as Modified by Amendment Nos. 1 and 2 Thereto, To Establish Nasdaq Last Sale Data Feeds2008-06-20T00:00:00-07:002008-06-20T00:00:00-07:00E8-13955Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-20/pdf/E8-13955.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/20/E8-13945.htmlNotice - Self-Regulatory Organizations; National Association of Securities Dealers, Inc. (n/k/a Financial Industry Regulatory Authority, Inc.); Order Approving Proposed Rule Change and Amendment No. 1 Thereto To Expand the Scope of NASD Rule 2440 and Interpretive Material 2440-1 Relating to Fair Prices and Commissions To Apply to All Securities Transactions2008-06-20T00:00:00-07:002008-06-20T00:00:00-07:00E8-13945Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-20/pdf/E8-13945.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/20/E8-13944.htmlNotice - Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing of Proposed Rule Change as Modified by Amendment No. 1 To Amend the Pilot Program for Initial and Continued Listing Standards, To Provide That Currently Traded Issuers Will Be Required To Meet Each of the $5 Closing Price Requirement and the $150 Million Market Value of Listed Securities Requirement on the Basis of a 90 Trading Day Average of the Closing Price of the Company's Common Stock Prior To Applying for Listing2008-06-20T00:00:00-07:002008-06-20T00:00:00-07:00E8-13944Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-20/pdf/E8-13944.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/20/E8-13914.htmlNotice - Self-Regulatory Organizations; The NASDAQ Stock Market LLC; Order Granting Approval of Proposed Rule Change, as Modified by Amendment No. 1 Thereto, Relating to the Listing and Trading of Managed Fund Shares2008-06-20T00:00:00-07:002008-06-20T00:00:00-07:00E8-13914Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-20/pdf/E8-13914.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/20/08-1373.htmlNotice - In the Matter of Certain Companies Quoted on the Pink Sheets: Greenstone Holdings, Inc.; Order of Suspension of Trading2008-06-20T00:00:00-07:002008-06-20T00:00:00-07:0008-1373Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-20/pdf/08-1373.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/19/E8-13855.htmlNotice - Self-Regulatory Organizations; The Options Clearing Corporation; Notice of Filing of a Proposed Rule Change Relating to Its Facilities Management Agreements2008-06-19T00:00:00-07:002008-06-19T00:00:00-07:00E8-13855Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-19/pdf/E8-13855.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/19/E8-13853.htmlNotice - Self-Regulatory Organizations; The Depository Trust Company; Notice of Filing of Amended Proposed Rule Change Amending FAST and DRS Limited Participant Requirements for Transfer Agents2008-06-19T00:00:00-07:002008-06-19T00:00:00-07:00E8-13853Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-19/pdf/E8-13853.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13710.htmlNotice - Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Relating to the Elimination of Obsolete Rules Related to the PCX Plus System2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13710Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13710.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13709.htmlNotice - Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Regarding Position and Exercise Limits for Options on the DIAMONDS Trust2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13709Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13709.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13708.htmlNotice - Self-Regulatory Organizations; American Stock Exchange LLC; Notice of Filing of Proposed Rule Change Modifying the Provisions Governing Contacts Between Specialists and Issuers2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13708Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13708.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13707.htmlNotice - Self-Regulatory Organizations; International Securities Exchange, LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change Relating to Payment for Order Flow Fees2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13707Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13707.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13706.htmlNotice - Self-Regulatory Organizations; Philadelphia Stock Exchange, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Increasing the Maximum Number of Quoters in Options Overlying the SPDR Gold Trust2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13706Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13706.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13705.htmlNotice - Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing of Proposed Rule Change Amending NYSE Arca Rule 5.3 and Rule 5.4 To Enable the Listing and Trading of Options on Index-Linked Securities2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13705Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13705.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13704.htmlNotice - Self-Regulatory Organizations; Fixed Income Clearing Corporation; Notice of Filing and Order Approving an Extension of Temporary Registration as a Clearing Agency2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13704Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13704.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/18/E8-13703.htmlNotice - Self-Regulatory Organizations; Chicago Board Options Exchange, Incorporated; Notice of Filing of Proposed Rule Change To List and Trade Options on the BXM Index (1/10th Value)2008-06-18T00:00:00-07:002008-06-18T00:00:00-07:00E8-13703Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-18/pdf/E8-13703.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/17/E8-13499.htmlNotice - Self-Regulatory Organizations; NASDAQ Stock Market, LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Relating to the Listing and Trading on the Exchange of Options on the SPDR Gold Trust2008-06-17T00:00:00-07:002008-06-17T00:00:00-07:00E8-13499Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-17/pdf/E8-13499.pdfhttps://regulations.justia.com/regulations/fedreg/2008/06/16/E8-13427.htmlNotice - Submission for OMB Review; Comment Request2008-06-16T00:00:00-07:002008-06-16T00:00:00-07:00E8-13427Noticehttp://www.gpo.gov/fdsys/pkg/FR-2008-06-16/pdf/E8-13427.pdf