The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8

Report for the Calendar Year or Quarter Ended: 09-30-2013
Check here if Amendment    Amendment Number:
This Amendment (Check only one.):    is a restatement.
   adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: DAVIDSON D A & CO
Address: 8 THIRD ST NORTH
GREAT FALLS, MT  59401
Form 13F File Number: 028-07602

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.

Person Signing this Report on Behalf of Reporting Manager:
Name: Joely Meighan
Title: Director of Managed Assets
Phone: 206-389-4075
Signature, Place, and Date of Signing:
Joely Meighan SeattleWA 11-13-2013
[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.)
   13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
X 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).)
List of Other Managers Reporting for this Manager:
[If there are no entries in this list, omit this section.]
Form 13F File Number Name
  Alta Capital Management
  Ashfield Capital Partners LLC
  Aston Asset Management
  Atalanta Sosnoff Management
  C.S. McKee
  Confluence Inv Management LLC
  D. A. Davidson & Co.
  Davidson Investment Advisors
  Davis Investment Advisors
  Eagle Asset Management
  Elessar Investment Management, LLC
  Estabrook Capital Management
  F-Squared AlphaSector
  Granite Investment Partners
  Hays Advisory
  John Hancock Asset Management
  Legg Mason
  Lesa Sroufe & Co.
  McDonnell Investment Mgmt
  Oak Ridge Investments
  Pacific Income Advisors
  Parametric Portfolio Associates
  Placemark
  RNC Genter Capital Management
  Riverbridge Partners, LLC
  Sage Advisory Services, Ltd. Co.
  SeaCap Investment Advisors
  Thornburg Investment Management
  Uniplan Real Estate Advisors
  Victory Capital Management
  Wedgewood Partners, Inc.
  Ziegler Lotsoff Capital Management
Form 13F Summary Page
Report Summary:
Number of Other Included Managers: 32
Form 13F Information Table Entry Total: 3,748
Form 13F Information Table Value Total: 2,223,035
(thousands)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
No. Form 13F File Number Name
1 028-05119 Alta Capital Management
2   Ashfield Capital Partners LLC
3   Aston Asset Management
4   Atalanta Sosnoff Management
5   C.S. McKee
6   Confluence Inv Management LLC
7   D.A. Davidson
8 028-10301 Davidson Investment Advisors
9   Davis Investment Advisors
10 028-01666 Eagle Asset Management
11   Elessar Investment Management LLC
12 028-01283 Estabrook Capital Management
13   F-Squared AlphaSector
14   Granite Investment Partners
15 028-10649 Hays Advisory
16 028-03955 John Hancock Asset Management
17   Legg Mason
18   Lesa Sroufe & Co.
19   McDonnell Investment Management
20 028-06668 Oak Ridge Investments
21   Pacific Income Advisors
22   Parametric Portfolio Associates
23   Placemark
24 028-00970 RNC Genter Capital Management
25   Riverbridge Partners, LLC
26   Sage Advisory Services, Ltd
27   SeaCap Investment Advisors
28 028-06605 Thornburg Investment Management
29   Uniplan Real Estate Advisors
30   Victory Capital Management
31   Wedgewood Partners, Inc.
32   Ziegler Lotsoff Capital Management