Company:  OPPENHEIMER PORTFOLIO SER ...
Form Type:  497
Filing Date:  2/6/2019 
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 497
    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
    Appendix
      Financial Statements