0001104659-13-011106.txt : 20130219 0001104659-13-011106.hdr.sgml : 20130219 20130215085736 ACCESSION NUMBER: 0001104659-13-011106 CONFORMED SUBMISSION TYPE: 485BPOS PUBLIC DOCUMENT COUNT: 8 FILED AS OF DATE: 20130215 DATE AS OF CHANGE: 20130215 EFFECTIVENESS DATE: 20130215 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MFS SERIES TRUST V CENTRAL INDEX KEY: 0000200489 IRS NUMBER: 042468583 STATE OF INCORPORATION: MA FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1933 Act SEC FILE NUMBER: 002-38613 FILM NUMBER: 13617611 BUSINESS ADDRESS: STREET 1: 500 BOYLSTON ST STREET 2: 15TH FL CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 18006372929 MAIL ADDRESS: STREET 1: 500 BOYLSTON STREET STREET 2: 15TH FL CITY: BOSTON STATE: MA ZIP: 02116 FORMER COMPANY: FORMER CONFORMED NAME: MFS TOTAL RETURN FUND DATE OF NAME CHANGE: 19930408 FORMER COMPANY: FORMER CONFORMED NAME: MASSACHUSETTS MFS TOTAL RETURN FUND DATE OF NAME CHANGE: 19921023 FORMER COMPANY: FORMER CONFORMED NAME: MASSACHUSETTS FINANCIAL TOTAL RETURN TRUST DATE OF NAME CHANGE: 19920703 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MFS SERIES TRUST V CENTRAL INDEX KEY: 0000200489 IRS NUMBER: 042468583 STATE OF INCORPORATION: MA FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1940 Act SEC FILE NUMBER: 811-02031 FILM NUMBER: 13617612 BUSINESS ADDRESS: STREET 1: 500 BOYLSTON ST STREET 2: 15TH FL CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 18006372929 MAIL ADDRESS: STREET 1: 500 BOYLSTON STREET STREET 2: 15TH FL CITY: BOSTON STATE: MA ZIP: 02116 FORMER COMPANY: FORMER CONFORMED NAME: MFS TOTAL RETURN FUND DATE OF NAME CHANGE: 19930408 FORMER COMPANY: FORMER CONFORMED NAME: MASSACHUSETTS MFS TOTAL RETURN FUND DATE OF NAME CHANGE: 19921023 FORMER COMPANY: FORMER CONFORMED NAME: MASSACHUSETTS FINANCIAL TOTAL RETURN TRUST DATE OF NAME CHANGE: 19920703 0000200489 S000002437 MFS International New Discovery Fund C000006520 A MIDAX C000006521 R4 MIDJX C000006522 529A EAIDX C000006523 529B EBIDX C000006524 529C ECIDX C000006525 B MIDBX C000006526 C MIDCX C000006527 I MWNIX C000006529 R1 MIDGX C000006531 R2 MIDRX C000006532 R3 MIDHX C000116933 R5 MIDLX 0000200489 S000002438 MFS Research Fund C000006533 A MFRFX C000006534 R4 MFRJX C000006538 B MFRBX C000006539 C MFRCX C000006540 I MRFIX C000006542 R1 MFRLX C000006544 R2 MSRRX C000006545 R3 MFRHX C000034431 R5 MFRKX 0000200489 S000002439 MFS Total Return Fund C000006546 A MSFRX C000006547 R4 MSFJX C000006548 529A EATRX C000006549 529B EBTRX C000006550 529C ECTRX C000006551 B MTRBX C000006552 C MTRCX C000006553 I MTRIX C000006555 R1 MSFFX C000006557 R2 MTRRX C000006558 R3 MSFHX C000116934 R5 MSFKX 485BPOS 1 a13-2565_7485bpos.htm POST-EFFECTIVE AMENDMENT FILED PURSUANT TO SECURITIES ACT RULE 485(B)

 

As filed with the Securities and Exchange Commission on February 15, 2013

 

1933 Act File No. 2-38613

 

1940 Act File No. 811-2031

 

 

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

 


 

FORM N-1A

 

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

 

POST-EFFECTIVE AMENDMENT NO. 73

 

AND

 

REGISTRATION STATEMENT

UNDER

THE INVESTMENT COMPANY ACT OF 1940

 

AMENDMENT NO. 58

 

MFS® SERIES TRUST V

(Exact Name of Registrant as Specified in Charter)

 

111 Huntington Avenue, Boston, Massachusetts  02199

(Address of Principal Executive Offices)

 

Registrant’s Telephone Number, Including Area Code: (617) 954-5000

 

Susan S. Newton, Massachusetts Financial Services Company

111 Huntington Avenue, Boston, Massachusetts  02199

(Name and Address of Agent for Service)

 

APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:

It is proposed that this filing will become effective (check appropriate box)

 

x immediately upon filing pursuant to paragraph (b)

o on [date] pursuant to paragraph (b)

o 60 days after filing pursuant to paragraph (a)(i)

o on [date] pursuant to paragraph (a)(i)

o 75 days after filing pursuant to paragraph (a)(ii)

o on [date] pursuant to paragraph (a)(ii) of rule 485.

 

If appropriate, check the following box:

o this post-effective amendment designates a new effective date for a previously filed post-effective amendment

 

 

 



 

SIGNATURES

 

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment to the Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized, in the City of Boston and The Commonwealth of Massachusetts on the 15th day of February 2013.

 

 

 

MFS® SERIES TRUST V

 

 

 

 

 

By:

JOHN M. CORCORAN *

 

 

Name:

John M. Corcoran

 

 

Title:

President

 

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to its Registration Statement has been signed below by the following persons in the capacities indicated on February 15, 2013.

 

SIGNATURE

 

TITLE

 

 

 

JOHN M. CORCORAN*

 

President (Principal Executive Officer)

John M. Corcoran

 

 

 

 

 

 

 

 

DAVID L. DILORENZO*

 

Principal Financial and Accounting Officer

David L. DiLorenzo

 

 

 

 

 

 

 

 

ROBERT E. BUTLER*

 

Trustee

Robert E. Butler

 

 

 

 

 

 

 

 

MAUREEN R. GOLDFARB*

 

Trustee

Maureen R. Goldfarb

 

 

 

 

 

 

 

 

DAVID H. GUNNING*

 

Trustee

David H. Gunning

 

 

 

 

 

 

 

 

WILLIAM R. GUTOW*

 

Trustee

William R. Gutow

 

 

 

 

 

 

 

 

MICHAEL HEGARTY*

 

Trustee

Michael Hegarty

 

 

 



 

JOHN P. KAVANAUGH*

 

Trustee

John P. Kavanaugh

 

 

 

 

 

 

 

 

ROBERT J. MANNING*

 

Trustee

Robert J. Manning

 

 

 

 

 

 

 

 

J. DALE SHERRATT*

 

Trustee

J. Dale Sherratt

 

 

 

 

 

 

 

 

LAURIE J. THOMSEN*

 

Trustee

Laurie J. Thomsen

 

 

 

 

 

 

 

 

ROBERT W. UEK*

 

Trustee

Robert W. Uek

 

 

 

 

 

*By:

SUSAN S. NEWTON

 

 

Name:

Susan S. Newton

 

 

 

as Attorney-in-fact

 

 

 

 

 

Executed by Susan S. Newton on behalf of those indicated pursuant to a Power of Attorney, dated December 7, 2012 (Trustees), and a Power of Attorney, dated December 7, 2012 (Corcoran) (DiLorenzo); filed herewith.

 



 

MFS Series Trust I

MFS Series Trust II

MFS Series Trust III

MFS Series Trust IV

MFS Series Trust V

MFS Series Trust VI

MFS Series Trust VII

MFS Series Trust VIII

MFS Series Trust IX

MFS Series Trust X

MFS Series Trust XI

MFS Series Trust XII

MFS Series Trust XIII

MFS Series Trust XIV

MFS Series Trust XV

MFS Series Trust XVI

Massachusetts Investors Growth Stock Fund

Massachusetts Investors Trust

MFS Institutional Trust

MFS Municipal Series Trust

MFS Variable Insurance Trust

MFS Variable Insurance Trust II

MFS Variable Insurance Trust III

MFS California Municipal Fund

MFS Charter Income Trust

MFS Government Markets Income Trust

MFS High Income Municipal Trust

MFS High Yield Municipal Trust

MFS InterMarket Income Trust I

MFS Intermediate High Income Fund

MFS Intermediate Income Trust

MFS Investment Grade Municipal Trust

MFS Multimarket Income Trust

MFS Municipal Income Trust

MFS Special Value Trust

 

(each a “Registrant”)

 

POWER OF ATTORNEY

 

The undersigned, a Trustee of each of the above-mentioned Registrants, hereby severally constitutes and appoints Mark N. Polebaum, Susan S. Newton, Christopher R. Bohane, Thomas H. Connors, Brian E. Langenfeld and Susan A. Pereira, and each of them singly, as true and lawful attorneys, with full power to them and each of them to sign for each of the undersigned, in the names of, and in the

 



 

capacities indicated below, any Registration Statement and any and all amendments thereto and to file the same with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission for the purpose of registering the Registrant as a management investment company under the Investment Company Act of 1940 and/or the shares issued by the Registrant under the Securities Act of 1933 granting unto my said attorneys, and each of them, acting alone, full power and authority to do and perform each and every act and thing requisite or necessary or desirable to be done in the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys or any of them may lawfully do or cause to be done by virtue thereof.

 

IN WITNESS WHEREOF, the undersigned have hereunto set their hand on this 7th day of December, 2012.

 

 

ROBERT E. BUTLER

 

Trustee

Robert E. Butler

 

 

 

 

 

 

 

 

MAUREEN R. GOLDFARB

 

Trustee

Maureen R. Goldfarb

 

 

 

 

 

 

 

 

DAVID H. GUNNING

 

Trustee

David H. Gunning

 

 

 

 

 

 

 

 

WILLIAM R. GUTOW

 

Trustee

William R. Gutow

 

 

 

 

 

 

 

 

MICHAEL HEGARTY

 

Trustee

Michael Hegarty

 

 

 

 

 

 

 

 

JOHN P. KAVANAUGH

 

Trustee

John P. Kavanaugh

 

 

 

 

 

 

 

 

ROBERT J. MANNING

 

Trustee

Robert J. Manning

 

 

 

 

 

 

 

 

J. DALE SHERRATT

 

Trustee

J. Dale Sherratt

 

 

 



 

LAURIE J. THOMSEN

 

Trustee

Laurie J. Thomsen

 

 

 

 

 

 

 

 

ROBERT W. UEK

 

Trustee

Robert W. Uek

 

 

 



 

MFS Series Trust I

MFS Series Trust II

MFS Series Trust III

MFS Series Trust IV

MFS Series Trust V

MFS Series Trust VI

MFS Series Trust VII

MFS Series Trust VIII

MFS Series Trust IX

MFS Series Trust X

MFS Series Trust XI

MFS Series Trust XII

MFS Series Trust XIII

MFS Series Trust XIV

MFS Series Trust XV

MFS Series Trust XVI

Massachusetts Investors Growth Stock Fund

Massachusetts Investors Trust

MFS Institutional Trust

MFS Municipal Series Trust

MFS Variable Insurance Trust

MFS Variable Insurance Trust II

MFS Variable Insurance Trust III

MFS California Municipal Fund

MFS Charter Income Trust

MFS Government Markets Income Trust

MFS High Income Municipal Trust

MFS High Yield Municipal Trust

MFS InterMarket Income Trust I

MFS Intermediate High Income Fund

MFS Intermediate Income Trust

MFS Investment Grade Municipal Trust

MFS Multimarket Income Trust

MFS Municipal Income Trust

MFS Special Value Trust

 

(each a “Registrant”)

 

POWER OF ATTORNEY

 

The undersigned, being the President and Principal Executive Officer, and Treasurer and Principal Financial and Accounting Officer, respectively, of each of the above-mentioned Registrants, hereby severally constitutes and appoints Mark N. Polebaum, Susan S. Newton, Christopher R. Bohane,

 



 

Thomas H. Connors, Brian E. Langenfeld and Susan A. Pereira, and each of them singly, as true and lawful attorneys, with full power to them and each of them to sign for each of the undersigned, in the names of, and in the capacities indicated below, any Registration Statement and any and all amendments thereto and to file the same with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission for the purpose of registering the Registrant as a management investment company under the Investment Company Act of 1940 and/or the shares issued by the Registrant under the Securities Act of 1933 granting unto my said attorneys, and each of them, acting alone, full power and authority to do and perform each and every act and thing requisite or necessary or desirable to be done in the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys or any of them may lawfully do or cause to be done by virtue thereof.

 

IN WITNESS WHEREOF, the undersigned have hereunto set their hand on this 7th day of December, 2012.

 

 

JOHN M. CORCORAN

 

President (Principal Executive Officer)

John M. Corcoran

 

 

 

 

 

 

 

 

DAVID L. DILORENZO

 

Principal Financial and Accounting Officer

David L. DiLorenzo

 

 

 



 

MFS SERIES TRUST V

 

MFS® INTERNATIONAL NEW DISCOVERY FUND

MFS® RESEARCH FUND

MFS® TOTAL RETURN FUND

 

INDEX TO EXHIBITS

 

EXHIBIT NO.

 

DESCRIPTION OF EXHIBIT

 

PAGE NO.

 

 

 

 

 

101

 

Risk/Return summary of each Fund’s prospectus as an Interactive Data File using eXtensible Business Reporting Language (“XBRL”)

 

 

 


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MFS Fund Distributors, Inc., has agreed in writing to waive the program management fee for each of the fund's Class 529A, Class 529B, and Class 529C shares to 0.05% of the fund's average daily net assets attributable to each share class annually. This written agreement will expire on January 31, 2014, unless MFS Fund Distributors, Inc., elects to extend the waiver. On shares purchased without an initial sales charge and redeemed within 18 months of purchase for shares purchased on or after August 1, 2012, and within 24 months of purchase for shares purchased prior to August 1, 2012. As of December 31, 2012, the MFS Total Return Blended Index (the "Blended Index") consisted of the following indices and weightings: 60% Standard & Poor's 500 Stock Index and 40% Barclays U.S. Aggregate Bond Index. The underlying indices and weightings of the Blended Index may have differed during the period, and may differ in the future. MFS SERIES TRUST V 485BPOS false 0000200489 2012-09-30 2013-01-25 2013-01-28 2013-01-28 MFS International New Discovery Fund Summary of Key Information MIDAX MIDJX EAIDX EBIDX ECIDX MIDBX MIDCX MWNIX MIDGX MIDRX MIDHX MIDLX Portfolio Turnover <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These transaction costs, which are not reflected in &#8220;Annual Fund Operating Expenses&#8221; or in the &#8220;Example,&#8221; affect the fund&#8217;s performance.&#160; During the most recent fiscal year, the fund&#8217;s portfolio turnover rate was 21% of the average value of its portfolio.</font> </p> 0.21 Performance Information <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The bar chart and performance table below are intended to provide some indication of the risks of investing in the fund by showing changes in the fund&#8217;s performance over time and how the fund&#8217;s performance over time compares with that of a broad measure of market performance.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The fund&#8217;s past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future. Updated performance is available online at <b>mfs.com</b> or by calling 1-800-225-2606.</font> </p> Class A Bar Chart. 0.4857 0.2430 0.2021 0.2685 0.0887 -0.4399 0.4742 0.2185 -0.1004 0.2471 ~ http://mfs.com/20130125/role/ScheduleAnnualTotalReturnsBarChart20005 column dei_LegalEntityAxis compact ck0000200489_S000002437Member row primary compact * ~ <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt;">The bar chart does not take into account any sales charges (loads) that you may be required to pay upon purchase or redemption of the fund's shares. If these sales charges were included, they would reduce the returns shown.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-family: Times New Roman;"/> </p> highest quarterly return 0.2784 2009-06-30 lowest quarterly return -0.2212 2008-09-30 <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">During the period(s)&#160;shown in the bar chart, the highest quarterly return was 27.84% (for the calendar quarter ended June&#160;30, 2009) and the lowest quarterly return was (22.12)% (for the calendar quarter ended September&#160;30, 2008).</font> </p> Performance Table. 0.1985 0.0133 0.1260 B Shares Returns Before Taxes 0.2278 0.0170 0.1243 C Shares Returns Before Taxes 0.2502 0.0273 0.1356 I Shares Returns Before Taxes 0.1754 0.0114 0.1235 529A Shares Returns Before Taxes 0.1974 0.0124 0.1241 529B Shares Returns Before Taxes 0.2277 0.0161 0.1224 529C Shares Returns Before Taxes 0.2381 0.0171 0.1236 R1 Shares Returns Before Taxes 0.2442 0.0221 0.1289 R2 Shares Returns Before Taxes 0.2471 0.0246 0.1320 R3 Shares Returns Before Taxes 0.2503 0.0273 0.1351 R4 Shares Returns Before Taxes 0.2505 0.0273 0.1357 R5 Shares Returns Before Taxes 0.1754 0.0124 0.1255 A Shares Returns Before Taxes 0.1742 0.0094 0.1151 A Shares Returns After Taxes on Distributions 0.1172 0.0102 0.1096 A Shares Returns After Taxes on Distributions and Sale of Fund Shares 0.1846 -0.0087 0.1268 Index Comparison (Reflects no deduction for fees, expenses or taxes) MSCI All Country World (ex-US) Small Mid Cap Index (gross div) ~ http://mfs.com/20130125/role/ScheduleAverageAnnualReturnsTransposed20006 column dei_LegalEntityAxis compact ck0000200489_S000002437Member column rr_PerformanceMeasureAxis compact * row primary compact * ~ <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">Aft</font><font size="2" style="font-size:10.0pt;">er-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your own tax situation, and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k)&#160;plans or individual retirement accounts. The after-tax returns are shown for only one of the fund&#8217;s classes of shares, and after-tax returns for the fund&#8217;s other classes of shares will vary from the returns shown.</font> </p> After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The bar chart and performance table below are intended to provide some indication of the risks of investing in the fund by showing changes in the fund's performance over time and how the fund's performance over time compares with that of a broad measure of market performance. The fund's past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future. The after-tax returns are shown for only one of the fund's classes of shares, and after-tax returns for the fund's other classes of shares will vary from the returns shown. (Reflects no deduction for fees, expenses or taxes) The bar chart does not take into account any sales charges (loads) that you may be required to pay upon purchase or redemption of the fund's shares. If these sales charges were included, they would reduce the returns shown. 1-800-225-2606 mfs.com Average Annual Total Returns (for the Periods Ended December 31, 2012) The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The after-tax returns are shown for only one of the fund's classes of shares, and after-tax returns for the fund's other classes of shares will vary from the returns shown. 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Equity securities include common stocks, preferred stocks, securities convertible into stocks, and depositary receipts for such securities.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">MFS may invest a large percentage of the fund&#8217;s assets in issuers in a single country, a small number of countries, or a particular geographic region.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">MFS focuses on investing the fund&#8217;s assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies).</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">While MFS may invest the fund&#8217;s assets in companies of any size, MFS generally focuses on companies with small to medium capitalizations.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">MFS uses a bottom-up investment approach to buying and selling investments for the fund. Investments are selected primarily based on fundamental analysis of individual issuers. Quantitative models that systematically evaluate issuers may also be considered.</font> </p> Fees and Expenses <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">This table describes the fees and expenses that you may pay when you buy and hold shares of the fund. Expenses have been adjusted to reflect current fee arrangements. The annual fund operating expenses for Class&#160;R5 shares are based on estimated &#8220;Other Expenses&#8221; for the current fiscal year expressed as a percentage of the fund&#8217;s estimated average net assets during the period.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">You may qualify for sales charge reductions if you and certain members of your family invest, or agree to invest in the future, at least $50,000 in MFS Funds. More information about these and other waivers and reductions is available from your financial intermediary and in &#8220;Sales Charges and Waivers or Reductions&#8221; on page&#160;7 of the fund&#8217;s prospectus and &#8220;Waivers of Sales Charges&#8221; on page&#160;I-15 of the fund&#8217;s statement of additional information Part&#160;I.</font> </p> 0.0575 0.0000 0.0000 0.0000 0.0575 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0100 0.0400 0.0100 0.0000 0.0000 0.0400 0.0100 0.0000 0.0000 0.0000 0.0000 0.0000 0.0093 0.0093 0.0093 0.0093 0.0093 0.0093 0.0093 0.0093 0.0093 0.0093 0.0093 0.0093 0.0025 0.0100 0.0100 0.0000 0.0025 0.0100 0.0100 0.0100 0.0050 0.0025 0.0000 0.0000 0.0021 0.0021 0.0021 0.0021 0.0031 0.0031 0.0031 0.0021 0.0021 0.0021 0.0021 0.0011 0.0139 0.0214 0.0214 0.0114 0.0149 0.0224 0.0224 0.0214 0.0164 0.0139 0.0114 0.0104 0.0000 0.0000 0.0000 0.0000 -0.0005 -0.0005 -0.0005 0.0000 0.0000 0.0000 0.0000 0.0000 0.0139 0.0214 0.0214 0.0114 0.0144 0.0219 0.0219 0.0214 0.0164 0.0139 0.0114 0.0104 ~ http://mfs.com/20130125/role/ScheduleShareholderFees20001 column dei_LegalEntityAxis compact ck0000200489_S000002437Member row primary compact * ~ ~ http://mfs.com/20130125/role/ScheduleAnnualFundOperatingExpenses20002 column dei_LegalEntityAxis compact ck0000200489_S000002437Member row primary compact * ~ 2014-01-31 Expenses have been adjusted to reflect current fee arrangements. You may qualify for sales charge reductions if you and certain members of your family invest, or agree to invest in the future, at least $50,000 in MFS Funds. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment): 50000 The annual fund operating expenses for Class R5 shares are based on estimated "Other Expenses" for the current fiscal year expressed as a percentage of the fund's estimated average net assets during the period. Shareholder Fees (fees paid directly from your investment): Principal Risks <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">As with any mutual fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The principal risks of investing in the fund are:</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Stock Market/Company Risk:</font></b> <i><font size="2" style="font-size:10.0pt;font-style:italic;">&#160;</font></i><font size="2" style="font-size:10.0pt;">Stock markets are volatile and can decline significantly in response to issuer, market, economic, industry, political, regulatory, geopolitical, and other conditions, as well as to investor perceptions of these conditions. The price of an equity security can decrease significantly in response to these conditions, and these conditions can affect a single issuer or type of security, issuers within a broad market sector, industry or geographic region, or the market in general.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Growth Company Risk:</font></b> <font size="2" style="font-size:10.0pt;">&#160;The stocks of growth companies can be more sensitive to the company&#8217;s earnings and more volatile than the market in general.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Small to Medium Cap Risk:</font></b><i><font size="2" style="font-size:10.0pt;font-style:italic;">&#160;</font></i> <font size="2" style="font-size:10.0pt;">The stocks of small to medium cap companies can be more volatile than stocks of larger companies.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Foreign and Emerging Markets Risk:</font></b> <font size="2" style="font-size:10.0pt;">&#160;Exposure to foreign markets, especially emerging markets, through issuers or currencies can involve additional risks relating to market, economic, political, regulatory, geopolitical, and other conditions. These factors can make foreign investments, especially those in emerging markets, more volatile and less liquid than U.S. investments. In addition, foreign markets can react differently to these conditions than the U.S. market. Emerging markets can have less developed markets, greater custody and operational risk, less developed legal, regulatory, and accounting systems, and greater political, social, and economic instability than developed markets.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Currency Risk:</font></b> <font size="2" style="font-size:10.0pt;">&#160;The value of foreign currencies relative to the U.S. dollar fluctuates in response to market, economic, political, regulatory, geopolitical, and other conditions, and a decline in the value of a foreign currency versus the U.S. dollar reduces the value in U.S. dollars of investments denominated in that foreign currency.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Geographic Concentration Risk:</font></b> <font size="2" style="font-size:10.0pt;">The fund&#8217;s performance could be closely tied to the market, currency, economic, political, regulatory, geopolitical, and other conditions in the countries or regions in which the fund invests and could be more volatile than the performance of more geographically-diversified funds.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Investment Selection Risk:</font></b> <font size="2" style="font-size:10.0pt;">&#160;MFS&#8217; investment analysis and its selection of investments may not produce the intended results and/or can lead to an investment focus that results in the fund underperforming other funds with similar investment strategies and/or underperforming the markets in which the fund invests.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Liquidity Risk:</font></b> <i><font size="2" style="font-size:10.0pt;font-style:italic;">&#160;</font></i><font size="2" style="font-size:10.0pt;">It may not be possible to sell certain investments, types of investments, and/or segments of the market at any particular time or at an acceptable price.</font> </p> As with any mutual fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. MFS Research Fund Summary of Key Information MFRFX MFRJX MFRBX MFRCX MRFIX MFRLX MSRRX MFRHX MFRKX Portfolio Turnover <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These transaction costs, which are not reflected in &#8220;Annual Fund Operating Expenses&#8221; or in the &#8220;Example,&#8221; affect the fund&#8217;s performance.&#160; During the most recent fiscal year, the fund&#8217;s portfolio turnover rate was 61% of the average value of its portfolio.</font> </p> 0.61 Performance Information <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The bar chart and performance table below are intended to provide some indication of the risks of investing in the fund by showing changes in the fund&#8217;s performance over time and how the fund&#8217;s performance over time compares with that of a broad measure of market performance.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The fund&#8217;s past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future. Updated performance is available online at <b>mfs.com</b> or by calling 1-800-225-2606.</font> </p> Class A Bar Chart. 0.2454 0.1558 0.0758 0.1030 0.1297 -0.3653 0.3042 0.1546 -0.0072 0.1717 ~ http://mfs.com/20130125/role/ScheduleAnnualTotalReturnsBarChart20013 column dei_LegalEntityAxis compact ck0000200489_S000002438Member row primary compact * ~ <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt;">The bar chart does not take into account any sales charges (loads) that you may be required to pay upon purchase or redemption of the fund's shares. 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Your actual after-tax returns will depend on your own tax situation, and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The after-tax returns are shown for only one of the fund&#8217;s classes of shares, and after-tax returns for the fund&#8217;s other classes of shares will vary from the returns shown.</font> </p> After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The bar chart and performance table below are intended to provide some indication of the risks of investing in the fund by showing changes in the fund's performance over time and how the fund's performance over time compares with that of a broad measure of market performance. The fund's past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future. The after-tax returns are shown for only one of the fund's classes of shares, and after-tax returns for the fund's other classes of shares will vary from the returns shown. (Reflects no deduction for fees, expenses or taxes) The bar chart does not take into account any sales charges (loads) that you may be required to pay upon purchase or redemption of the fund's shares. If these sales charges were included, they would reduce the returns shown. 1-800-225-2606 mfs.com Average Annual Total Returns (for the Periods Ended December 31, 2012) The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The after-tax returns are shown for only one of the fund's classes of shares, and after-tax returns for the fund's other classes of shares will vary from the returns shown. 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Equity securities include common stocks, preferred stocks, securities convertible into stocks, and depositary receipts for such securities.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">In selecting investments for the fund, MFS is not constrained to any particular investment style. MFS may invest the fund&#8217;s assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies), in the stocks of companies it believes are undervalued compared to their perceived worth (value companies), or in a combination of growth and value companies.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">While MFS may invest the fund&#8217;s assets in companies of any size, MFS generally focuses on companies with large capitalizations.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">MFS may invest the fund&#8217;s assets in foreign securities.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">While MFS may use derivatives for any investment purpose, to the extent MFS uses derivatives, MFS expects to use derivatives primarily to increase or decrease exposure to a particular market, segment of the market, or security. Derivatives include futures, forward contracts, options, structured securities, inverse floating rate instruments, and swaps.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">A team of investment research analysts selects investments for the fund. MFS allocates the fund&#8217;s assets to analysts by broad market sectors.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">MFS uses a bottom-up investment approach to buying and selling investments for the fund. Investments are selected primarily based on fundamental analysis of individual issuers. 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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment): 50000 Shareholder Fees (fees paid directly from your investment): Principal Risks <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">As with any mutual fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. 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An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. MFS Total Return Fund Summary of Key Information MSFRX MSFJX EATRX EBTRX ECTRX MTRBX MTRCX MTRIX MSFFX MTRRX MSFHX MSFKX Portfolio Turnover <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These transaction costs, which are not reflected in &#8220;Annual Fund Operating Expenses&#8221; or in the &#8220;Example,&#8221; affect the fund&#8217;s performance.&#160; During the most recent fiscal year, the fund&#8217;s portfolio turnover rate was 23% of the average value of its portfolio.</font> </p> 0.23 Performance Information <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The bar chart and performance table below are intended to provide some indication of the risks of investing in the fund by showing changes in the fund&#8217;s performance over time and how the fund&#8217;s performance over time compares with that of a broad measure of market performance and one or more other measures of performance for markets in which the fund may invest.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">The fund&#8217;s past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future. Updated performance is available online at <b>mfs.com</b> or by calling 1-800-225-2606.</font> </p> Class A Bar Chart. 0.1685 0.1137 0.0329 0.1177 0.0497 -0.2263 0.1818 0.0998 0.0190 0.1125 ~ http://mfs.com/20130125/role/ScheduleAnnualTotalReturnsBarChart20021 column dei_LegalEntityAxis compact ck0000200489_S000002439Member row primary compact * ~ <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt;">The bar chart does not take into account any sales charges (loads) that you may be required to pay upon purchase or redemption of the fund's shares. If these sales charges were included, they would reduce the returns shown.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-family: Times New Roman;"/> </p> highest quarterly return 0.1156 2009-06-30 lowest quarterly return -0.1237 2008-12-31 <p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">During the period(s)&#160;shown in the bar chart, the highest quarterly return was 11.56% (for the calendar quarter ended June&#160;30, 2009) and the lowest quarterly return was (12.37)% (for the calendar quarter ended December&#160;31, 2008).</font> </p> Performance Table. 0.0646 0.0157 0.0550 B Shares Returns Before Taxes 0.0942 0.0196 0.0534 C Shares Returns Before Taxes 0.1153 0.0297 0.0640 I Shares Returns Before Taxes 0.0482 0.0136 0.0524 529A Shares Returns Before Taxes 0.0639 0.0148 0.0532 529B Shares Returns Before Taxes 0.0945 0.0185 0.0516 529C Shares Returns Before Taxes 0.1050 0.0196 0.0526 R1 Shares Returns Before Taxes 0.1101 0.0245 0.0578 R2 Shares Returns Before Taxes 0.1132 0.0273 0.0605 R3 Shares Returns Before Taxes 0.1160 0.0297 0.0634 R4 Shares Returns Before Taxes 0.1158 0.0298 0.0640 R5 Shares Returns Before Taxes 0.0485 0.0144 0.0541 A Shares Returns Before Taxes 0.0429 0.0083 0.0441 A Shares Returns After Taxes on Distributions 0.0349 0.0097 0.0432 A Shares Returns After Taxes on Distributions and Sale of Fund Shares 0.1600 0.0166 0.0710 Index Comparisons (Reflects no deduction for fees, expenses or taxes) Standard & Poor's 500 Stock Index 0.0421 0.0595 0.0518 Index Comparisons (Reflects no deduction for fees, expenses or taxes) Barclays U.S. Aggregate Bond Index 0.1131 0.0381 0.0662 Index Comparisons (Reflects no deduction for fees, expenses or taxes) MFS Total Return Blended Index ~ http://mfs.com/20130125/role/ScheduleAverageAnnualReturnsTransposed20022 column dei_LegalEntityAxis compact ck0000200489_S000002439Member column rr_PerformanceMeasureAxis compact * row primary compact * ~ <p style="margin: 0in 0in .0001pt;"> <font style="font-size: small; font-family: times new roman,times;">Aft</font><font style="font-size: small;"><font style="font-family: times new roman,times;">er-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your own tax situation, and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k)&#160;plans or individual retirement accounts. The after-tax returns are shown <font style="font-size: small;">for only one of the fund&#8217;s classes of shares, and after-tax returns for the fund&#8217;s other classes of shares will vary from the returns shown.</font></font><br /> </font> </p> After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The bar chart and performance table below are intended to provide some indication of the risks of investing in the fund by showing changes in the fund's performance over time and how the fund's performance over time compares with that of a broad measure of market performance and one or more other measures of performance for markets in which the fund may invest. The fund's past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future. The after-tax returns are shown for only one of the fund's classes of shares, and after-tax returns for the fund's other classes of shares will vary from the returns shown. (Reflects no deduction for fees, expenses or taxes) The bar chart does not take into account any sales charges (loads) that you may be required to pay upon purchase or redemption of the fund's shares. If these sales charges were included, they would reduce the returns shown. 1-800-225-2606 mfs.com Average Annual Total Returns (for the Periods Ended December 31, 2012) The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The after-tax returns are shown for only one of the fund's classes of shares, and after-tax returns for the fund's other classes of shares will vary from the returns shown. 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Equity securities include common stocks, preferred stocks, securities convertible into stocks, and depositary receipts for such securities. Debt instruments include corporate bonds, U.S. Government securities, asset-backed securities, municipal instruments, foreign government securities, inflation-adjusted bonds, and other obligations to repay money borrowed. MFS seeks to invest between 40% and 75% of the fund&#8217;s assets in equity securities and at least 25% of the fund&#8217;s assets in fixed-income senior securities.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">MFS may invest the fund&#8217;s assets in foreign securities.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">MFS focuses on investing the fund&#8217;s assets in the stocks of companies it believes are undervalued compared to their perceived worth (value companies).</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">While MFS may invest the fund&#8217;s assets in companies of any size, MFS generally focuses on companies with large capitalizations.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">Of the fund&#8217;s investments in debt instruments, MFS generally invests substantially all of these investments in investment grade debt instruments.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <font size="2" style="font-size:10.0pt; font-family: Times New Roman;">While MFS may use derivatives for any investment purpose, to the extent MFS uses derivatives, MFS expects to use derivatives primarily to increase or decrease exposure to a particular market, segment of the market, or security, to increase or decrease interest rate or currency exposure, or as alternatives to direct investments. 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Leverage can cause increased volatility by magnifying gains or losses.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Investment Selection Risk:</font></b> <font size="2" style="font-size:10.0pt;">&#160;MFS&#8217; investment analysis and its selection of investments may not produce the intended results and/or can lead to an investment focus that results in the fund underperforming other funds with similar investment strategies and/or underperforming the markets in which the fund invests.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Counterparty and Third Party Risk:</font></b> <i><font size="2" style="font-size:10.0pt;font-style:italic;">&#160;</font></i><font size="2" style="font-size:10.0pt;">Transactions involving a counterparty or third party other than the issuer of the instrument are subject to the credit risk of the counterparty or third party, and to the counterparty&#8217;s or third party&#8217;s ability to perform in accordance with the terms of the transaction.</font> </p> <br/><p style="margin:0in 0in .0001pt;"> <b><font size="2" style="font-size:10.0pt;font-weight:bold; font-family: Times New Roman;">Liquidity Risk:</font></b> <i><font size="2" style="font-size:10.0pt;font-style:italic;">&#160;</font></i><font size="2" style="font-size:10.0pt;">It may not be possible to sell certain investments, types of investments, and/or segments of the market at any particular time or at an acceptable price.</font> </p> As with any mutual fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. 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