The GAMCO Mathers Fund

0001193125-13-259215.txt : 20130614 0001193125-13-259215.hdr.sgml : 20130614 20130614132204 ACCESSION NUMBER: 0001193125-13-259215 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 7 FILED AS OF DATE: 20130614 DATE AS OF CHANGE: 20130614 EFFECTIVENESS DATE: 20130614 FILER: COMPANY DATA: COMPANY CONFORMED NAME: GAMCO MATHERS FUND CENTRAL INDEX KEY: 0000063210 IRS NUMBER: 362554362 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 002-23727 FILM NUMBER: 13913547 BUSINESS ADDRESS: STREET 1: ONE CORPORATE CENTER CITY: RYE STATE: NY ZIP: 10580-1434 BUSINESS PHONE: 8004223554 MAIL ADDRESS: STREET 1: ONE CORPORATE CENTER CITY: RYE STATE: NY ZIP: 10580-1434 FORMER COMPANY: FORMER CONFORMED NAME: GABELLI MATHERS FUND DATE OF NAME CHANGE: 20010301 FORMER COMPANY: FORMER CONFORMED NAME: MATHERS FUND INC DATE OF NAME CHANGE: 19920703

0000063210 S000001073 THE GABELLI MATHERS FUND

C000002896 CLASS AAA MATRX

497 1 d545296d497.htm THE GAMCO MATHERS FUND The GAMCO Mathers Fund

EXPLANATORY NOTE

On behalf of the GAMCO Mathers Fund, Inc. (the “Fund”), and pursuant to Rule 497(e) under the Securities Act of 1933, attached for filing is an exhibit containing interactive data format risk/return summary information. The interactive data file included as an exhibit to this filing relates to the supplement filed with the Securities and Exchange Commission on behalf of the Fund pursuant to Rule 497(e) on May 30, 2013.

EX-101.INS 2 gmf-20130530.xml XBRL INSTANCE DOCUMENT 0000063210 2012-05-01 2013-04-30 0000063210 gmf:S000001073Member 2012-05-01 2013-04-30 2013-04-30 GAMCO MATHERS FUND 0000063210 2013-05-30 2013-05-30 2012-12-31 Other false The GAMCO Mathers Fund (the "Fund")Supplement dated May 30, 2013, to the Class AAA Prospectus dated April 30, 2013Effective immediately, the following replaces the first sentence of the fourth paragraph under the "Principal Investment Strategies" sub-section in the "Summary of the Fund" section and the first sentence of the fourth paragraph under the "Investment Objective, Investment Strategies, and Related Risks" section:"The Fund may make short sales of equity securities, including exchange-traded funds ("ETFs"), in amounts of up to 75% of the value of the Fund's net assets as determined at the time of the short sale." The GAMCO Mathers Fund (the "Fund")Supplement dated May 30, 2013, to the Class AAA Prospectus dated April 30, 2013Effective immediately, the following replaces the first sentence of the fourth paragraph under the "Principal Investment Strategies" sub-section in the "Summary of the Fund" section and the first sentence of the fourth paragraph under the "Investment Objective, Investment Strategies, and Related Risks" section:"The Fund may make short sales of equity securities, including exchange-traded funds ("ETFs"), in amounts of up to 75% of the value of the Fund's net assets as determined at the time of the short sale." 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Expense Example, No Redemption Narrative [Text Block] Expense Example, No Redemption, By Year, Caption [Text] Expense Example, No Redemption [Table] Expense Example Footnotes [Text Block] Expense Example Closing [Text Block] Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Strategy [Heading] Strategy Narrative [Text Block] Risk [Heading] Risk Narrative [Text Block] Risk Footnotes [Text Block] Risk Closing [Text Block] Bar Chart and Performance Table [Heading] Performance Narrative [Text Block] Bar Chart Narrative [Text Block] Bar Chart [Heading] Bar Chart [Table] Bar Chart Footnotes [Text Block] Bar Chart Closing [Text Block] Performance Table Heading Performance Table Narrative Performance [Table] Market Index Performance [Table] Performance Table Footnotes Performance Table Closing [Text Block] Shareholder Fees: Shareholder Fees Column [Text] Maximum Cumulative Sales Charge (as a percentage of Offering Price) Maximum Cumulative Sales Charge (as a percentage) Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) Maximum Deferred Sales Charge (as a percentage of Offering Price) Maximum Deferred Sales Charge (as a percentage) Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee Redemption Fee Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Maximum Account Fee (as a percentage of Assets) Maximum Account Fee Shareholder Fee, Other Net Expenses (as a percentage of Assets) Net Expenses Expenses (as a percentage of Assets) Total Expenses Management Fees (as a percentage of Assets) Distribution and Service (12b-1) Fees Distribution or Similar (Non 12b-1) Fees Other Expenses (as a percentage of Assets): Other Expenses Component1 Other Expenses Component2 Other Expenses Component3 Other Expenses Acquired Fund Fees and Expenses Fee Waiver or Reimbursement Fee Waiver or Reimbursement Operating Expenses: Operating Expenses Column [Text] Expense Example: Expense Example, By Year, Column [Text] Column Expense Example, with Redemption, 1 Year 1 Year Expense Example, with Redemption, 3 Years 3 Years Expense Example, with Redemption, 5 Years 5 Years Expense Example, with Redemption, 10 Years 10 Years Expense Example, No Redemption: Expense Example, No Redemption, By Year, Column [Text] Column Expense Example, No Redemption, 1 Year 1 Year Expense Example, No Redemption, 3 Years 3 Years Expense Example, No Redemption, 5 Years 5 Years Expense Example, No Redemption, 10 Years 10 Years Bar Chart Table: Annual Return Caption [Text] Caption Annual Return, Column [Text] Column Annual Return, Inception Date Inception Date Annual Return 1990 Annual Return 1991 Annual Return 1992 Annual Return 1993 Annual Return 1994 Annual Return 1995 Annual Return 1996 Annual Return 1997 Annual Return 1998 Annual Return 1999 Annual Return 2000 Annual Return 2001 Annual Return 2002 Annual Return 2003 Annual Return 2004 Annual Return 2005 Annual Return 2006 Annual Return 2007 Annual Return 2008 Annual Return 2009 Annual Return 2010 Annual Return 2011 Annual Return 2012 Annual Return 2013 Annual Return 2014 Annual Return 2015 Annual Return 2016 Annual Return 2017 Annual Return 2018 Annual Return 2019 Annual Return 2020 Average Annual Return: Label 1 Year 5 Years 10 Years Since Inception Inception Date Risk/Return Detail [Table] Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Expense Breakpoint Discounts [Text] Expense Breakpoint, Minimum Investment Required [Amount] Expense Exchange Traded Fund Commissions [Text] Expenses Represent Both Master and Feeder [Text] Expenses Explanation of Nonrecurring Account Fee [Text] Other Expenses, New Fund, Based on Estimates [Text] Acquired Fund Fees and Expenses, Based on Estimates [Text] Expenses Other Expenses Had Extraordinary Expenses Been Included [Text] Expenses Restated to Reflect Current [Text] Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Strategy Portfolio Concentration [Text] Risk Lose Money [Text] Risk Nondiversified Status [Text] Risk Money Market Fund [Text] Risk Not Insured Depository Institution [Text] Risk Caption Risk Column [Text] Risk [Text] Performance Information Illustrates Variability of Returns [Text] Performance One Year or Less [Text] Performance Additional Market Index [Text] Performance Availability Phone [Text] Performance Availability Website Address [Text] Performance Past Does Not Indicate Future [Text] Bar Chart Does Not Reflect Sales Loads [Text] Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text] Bar Chart, Returns for Class Not Offered in Prospectus [Text] Year to Date Return, Label EX-101.PRE 7 gmf-20130530_pre.xml XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE XML 8 R4.htm IDEA: XBRL DOCUMENT

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	GAMCO MATHERS FUND
Prospectus Date	rr_ProspectusDate	Apr. 30, 2013
Document Creation Date	dei_DocumentCreationDate	May 30, 2013

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Label Element Value

Risk/Return: rr_RiskReturnAbstract

Registrant Name dei_EntityRegistrantName GAMCO MATHERS FUND

Prospectus Date rr_ProspectusDate Apr. 30, 2013

Supplement [Text Block] gmf_SupplementTextBlock
The GAMCO Mathers Fund (the "Fund")
Supplement dated May 30, 2013, to the Class AAA Prospectus dated April 30, 2013
Effective immediately, the following replaces the first sentence of the fourth paragraph under the "Principal Investment Strategies" sub-section in the "Summary of the Fund" section and the first sentence of the fourth paragraph under the "Investment Objective, Investment Strategies, and Related Risks" section:
"The Fund may make short sales of equity securities, including exchange-traded funds ("ETFs"), in amounts of up to 75% of the value of the Fund's net assets as determined at the time of the short sale."

THE GABELLI MATHERS FUND

Risk/Return: rr_RiskReturnAbstract

Supplement [Text Block] gmf_SupplementTextBlock
The GAMCO Mathers Fund (the "Fund")
Supplement dated May 30, 2013, to the Class AAA Prospectus dated April 30, 2013
Effective immediately, the following replaces the first sentence of the fourth paragraph under the "Principal Investment Strategies" sub-section in the "Summary of the Fund" section and the first sentence of the fourth paragraph under the "Investment Objective, Investment Strategies, and Related Risks" section:
"The Fund may make short sales of equity securities, including exchange-traded funds ("ETFs"), in amounts of up to 75% of the value of the Fund's net assets as determined at the time of the short sale."

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation 12B

-Number 240

-Section 12b

-Subsection 1

+ Details

Name: dei_EntityRegistrantName

Namespace Prefix: dei_

Data Type: xbrli:normalizedStringItemType

Balance Type: na

Period Type: duration

X

- Definition

Supplement Text Block.

+ References

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The GAMCO Mathers Fund (the "Fund")
Supplement dated May 30, 2013, to the Class AAA Prospectus dated April 30, 2013
Effective immediately, the following replaces the first sentence of the fourth paragraph under the "Principal Investment Strategies" sub-section in the "Summary of the Fund" section and the first sentence of the fourth paragraph under the "Investment Objective, Investment Strategies, and Related Risks" section:
"The Fund may make short sales of equity securities, including exchange-traded funds ("ETFs"), in amounts of up to 75% of the value of the Fund's net assets as determined at the time of the short sale."

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Document and Entity Information
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