GAMCO Investors (GAMI) 10-Q/A 2012 Q1 Quarterly report (amended)

SECURITIES & EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q/A

(Mark One)

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2012

or

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ___ to ___

Commission File No. 001-14761

GAMCO INVESTORS, INC.
(Exact name of Registrant as specified in its charter)
New York	13-4007862
(State of other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
One Corporate Center, Rye, NY	10580-1422
(Address of principle executive offices)	(Zip Code)
(914) 921-3700
Registrant’s telephone number, including area code

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yesx    Noo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See the definitions of “large accelerated filer", "accelerated filer", and "smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):
Large accelerated filer ¨	Accelerated filer x
Non-accelerated filer o	Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes o No x

Indicate the number of shares outstanding of each of the Registrant’s classes of Common Stock, as of the latest practical date.

Class	Outstanding at April 30, 2012
Class A Common Stock, .001 par value	6,592,716
Class B Common Stock, .001 par value	20,040,746

Explanatory Note

This Amendment No. 1 to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2012 is being filed solely for the purpose of furnishing Exhibit 101 to the Form 10-Q in accordance with Rule 405 of Regulation S-T.  Certain information contained in Exhibit 101 was corrupted or deleted due to a software error.  Exhibit 101 provides financial information for the quarter formatted in XBRL.  This Amendment does not reflect any subsequent events occurring after the original filing date of the Form 10-Q or modify or update in any way disclosures made in the original filing.

Item 6. Exhibits

Exhibit #                                           Description

101.INS                       XBRL Instance Document

101.SCH                      XBRL Taxonomy Extension Schema Document

101.CAL                      XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF                      XBRL Taxonomy Extension Definition Linkbase Document

101.LAB                      XBRL Taxonomy Extension Labels Linkbase Document

101.PRE                       XBRL Taxonomy Extension Presentation Linkbase Document

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

GAMCO INVESTORS, INC.

(Registrant)

By:/s/ Kieran Caterina	By:/s/ Diane M. LaPointe
Name: Kieran Caterina	Name:  Diane M. LaPointe
Title: Co-Chief Accounting Officer	Title: Co-Chief Accounting Officer
Date: May 3, 2012	Date: May 3, 2012