Company:  OPPENHEIMER PORTFOLIO SER ...
Form Type:  485BPOS
Filing Date:  2/1/2019 
CIK:  0001307792 
Address:  6803 SOUTH TUCSON WAY 
City, State, Zip:  CENTENNIAL, Colorado 80112-3924 
Telephone:  303-768-3200 
Fiscal Year:  01/31 
Register and access this filing in:     
  FORM 485BPOS
    FUND PERFORMANCE
    SALES CHARGES
    FINANCIAL HIGHLIGHTS TABLE
    FINANCIAL HIGHLIGHTS TABLE
    FINANCIAL HIGHLIGHTS TABLE
    Financial Highlights
      FINANCIAL HIGHLIGHTS TABLE
    Appendix
      Management
        FUND PERFORMANCE
        SALES CHARGES
        FINANCIAL HIGHLIGHTS TABLE
        FINANCIAL HIGHLIGHTS TABLE
        FINANCIAL HIGHLIGHTS TABLE
      Financial Highlights
        FINANCIAL HIGHLIGHTS TABLE
    Appendix
      Management
        FUND PERFORMANCE
        SALES CHARGES
        FINANCIAL HIGHLIGHTS TABLE
        FINANCIAL HIGHLIGHTS TABLE
        FINANCIAL HIGHLIGHTS TABLE
        FINANCIAL HIGHLIGHTS TABLE
    Appendix
      Management
        FUND PERFORMANCE
        SALES CHARGES
        FINANCIAL HIGHLIGHTS TABLE
        FINANCIAL HIGHLIGHTS TABLE
        FINANCIAL HIGHLIGHTS TABLE
      Financial Highlights
        FINANCIAL HIGHLIGHTS TABLE
    Appendix
      Management
        NAME AND TITLE
        NAME AND TITLE
        NAME AND TITLE
        NAME AND TITLE
        TRUSTEE OWNERSHIP
        COMPENSATION TABLE
        BENEFICIAL OWNERS
      Portfolio Manager Range of Shares Beneficially Owned in the Fund
      Portfolio Manager Range of Shares Beneficially Owned in the Fund
      Portfolio Manager Range of Shares Beneficially Owned in the Fund
        PORTFOLIO OF INVESTMENTS
        FUND PERFORMANCE
        SALES CHARGES
        FUND PERFORMANCE
        SALES CHARGES
        FUND PERFORMANCE
        SALES CHARGES
        FUND PERFORMANCE
        SALES CHARGES
      Distributions and Taxes
      Additional Information About the Funds
    Appendix
      Financial Statements
    PART C
      Item 28. - Exhibits
      Item 29. - Persons Controlled by or Under Common Control ...
      Item 30. - Indemnification
      Item 32. - Principal Underwriter
      Item 33. - Location of Accounts and Records
    SIGNATURES
    EXHIBIT INDEX
  EXHIBIT 99.A CHARTER
  EXHIBIT 99.J OTHER OPININ