PJC Piper Jaffray Companies

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 13F

FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 31, 2012

Check here if Amendment [_]; Amendment Number: ________________________________

This Amendment (Check only one.): [_] is a restatement.
[_] adds new holdings entries.

Name:    Piper Jaffray Companies
Address: 800 Nicollet Mall
         Suite 800
         Minneapolis, MN 55402

Form 13F File Number: 28-10776

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Name:    Ann C. McCague
Title:   Chief Compliance Officer
Phone:   612-303-6359

    Ann C. McCague             Minneapolis, MN                 2/1/13
_______________________    ________________________    _______________________
      [Signature]               [City, State]                  [Date]

Report Type (Check only one.):

[_] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
are reported in this report.)

[X] 13F NOTICE. (Check here if no holdings reported are in this report, and all
holdings are reported by other reporting manager(s).)

[_] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this
reporting manager are reported in this report and a portion are reported by
other reporting manager(s).)

Form 13F File Number       Name

28-05637                   Advisory Research, Inc.
28-05030                   Fiduciary Asset Management Inc.

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