485BPOS

Filed with the U.S. Securities and Exchange Commission on June 5, 2013

1933 Act Registration File No. 333-17391

1940 Act File No. 811-07959

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	x
Pre-Effective Amendment No. ____	¨
Post-Effective Amendment No. 511	x
and
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 513	x

(Check appropriate box or boxes.)

ADVISORS SERIES TRUST

(Exact Name of Registrant as Specified in Charter)

615 East Michigan Street

Milwaukee, Wisconsin  53202

(Address of Principal Executive Offices) (Zip Code)

(Registrant’s Telephone Numbers, Including Area Code) (414) 765-6609

Douglas G. Hess, President

Advisors Series Trust

c/o U.S. Bancorp Fund Services, LLC

777 East Wisconsin Avenue, 5th Floor

Milwaukee, Wisconsin 53202

(Name and Address of Agent for Service)

Copies to:

Domenick Pugliese, Esq.

Paul Hastings LLP

75 East 55th Street

New York, New York 10022

It is proposed that this filing will become effective

ý	immediately upon filing pursuant to paragraph (b)
o	on __________ pursuant to paragraph (b)
o	60 days after filing pursuant to paragraph (a)(1)
o	on __________ pursuant to paragraph (a)(1)
o	75 days after filing pursuant to paragraph (a)(2)
o	on __________ pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box

[  ] this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Explanatory Note: This Post-Effective Amendment (“PEA”) No. 511 to the Advisors Series Trust’s (the “Trust”) Registration Statement on Form N-1A hereby incorporates Parts A, B and C from the Trust’s PEA No. 508 on Form N-1A filed May 16, 2013.  This PEA No. 511 is filed for the sole purpose of submitting the XBRL exhibit for the risk return summary first provided in PEA No. 508 to the Trust’s Registration Statement for its series: Shenkman Short Duration High Income Fund.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the “Securities Act”) and the Investment Company Act of 1940, as amended, the Registrant certifies that this Post-Effective Amendment No. 511 meets all of the requirements for effectiveness under Rule 485(b) and the Registrant has duly caused this Post-Effective Amendment No. 511 to its Registration Statement on Form N-1A to be signed on its behalf by the undersigned, duly authorized, in the City of Milwaukee and State of Wisconsin, on the 5th day of June, 2013.

Advisors Series Trust

By: /s/ Douglas G. Hess                                              

    Douglas G. Hess

    President

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment No. 511 to its Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
Donald E. O’Connor*	Trustee	June 5, 2013
Donald E. O’Connor
George J. Rebhan*	Trustee	June 5, 2013
George J. Rebhan
George T. Wofford*	Trustee	June 5, 2013
George T. Wofford
Joe D. Redwine*	Trustee, Chairman and	June 5, 2013
Joe D. Redwine	Chief Executive Officer
/s/ Cheryl L. King	Treasurer and	June 5, 2013
Cheryl L. King	Principal Financial Officer
/s/ Douglas G. Hess	President and	June 5, 2013
Douglas G. Hess	Principal Executive Officer
*By: /s/ Douglas G. Hess
Douglas G. Hess    Attorney-In Fact pursuant to    Power of Attorney

C-1 

EXHIBIT LIST

Exhibit	Exhibit No.
Instance Document	EX-101.INS
Schema Document	EX-101.SCH
Calculation Linkbase Document	EX-101.CAL
Definition Linkbase Document	EX-101.DEF
Label Linkbase Document	EX-101.LAB
Presentation Linkbase Document	EX-101.PRE

C-2

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Prospectus Date	rr_ProspectusDate	May 17, 2013

XML

Shenkman Short Duration High Income Fund

Shenkman Short Duration High Income Fund

Investment Objective

The Shenkman Short Duration High Income Fund (the “Fund”) seeks to generate a high level of current income.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.  You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Fund’s Class A shares.  More information about these and other discounts is available from your financial professional and in the “Class A Shares Sales Charge Reductions and Waivers” section beginning on page 23 of the Fund’s Prospectus and the “Breakpoints/Volume Discounts and Sales Charge Waivers” section on page 32 of the Fund’s Statement of Additional Information (“SAI”).

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Shenkman Short Duration High Income Fund	Class A	Class C	Class F	Institutional Class
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	3.00%	none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption price, whichever is less)	none	1.00%	none	none
Redemption Fee (as a percentage of amount redeemed on shares held for 30 days or less)	1.00%	1.00%	1.00%	1.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Shenkman Short Duration High Income Fund		Class A	Class C	Class F	Institutional Class
Management Fees		0.55%	0.55%	0.55%	0.55%
Distribution and Service (Rule 12b-1) Fees		0.25%	1.00%	none	none
Other Expenses (includes Shareholder Servicing Plan Fee)	[1]	0.66%	0.66%	0.66%	0.56%
Shareholder Servicing Plan Fee		0.10%	0.10%	0.10%	none
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%
Total Annual Fund Operating Expenses		1.47%	2.22%	1.22%	1.12%
Less: Fee Waiver and Expense Reimbursement	[2]	(0.46%)	(0.46%)	(0.46%)	(0.46%)
Net Annual Fund Operating Expenses		1.01%	1.76%	0.76%	0.66%

Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.  The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same (taking into account the Expense Caps only in the first year).  Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

if you redeem your shares at the end of the period

Expense Example Shenkman Short Duration High Income Fund (USD $)	1 Year	3 Years
Class A	400	707
Class C	279	650
Class F	78	342
Institutional Class	67	310

if you do not redeem your shares at the end of the period

Expense Example No Redemption Shenkman Short Duration High Income Fund (USD $)	1 Year	3 Years
Class A	400	707
Class C	179	650
Class F	78	342
Institutional Class	67	310

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance.

Principal Investment Strategies of the Fund

Under normal market conditions, the Fund will invest at least 80% of its net assets (plus any borrowings for investment purposes) in fixed income securities and loans issued by companies that are rated below investment grade (i.e., “junk” bonds and loans). The Fund considers below investment grade securities to include securities with ratings lower than BBB- by Standard & Poor’s® Ratings Group (“S&P”) or Baa3 by Moody’s Investors Service©, Inc. (“Moody’s”), or that are not rated or considered by the Advisor to be equivalent to high yield securities.  The Fund generally invests in high yield securities rated CCC or better by S&P or Moody’s, but retains the discretion to invest in even lower rated securities.

The fixed income securities and loans in which the Fund expects to invest include traditional corporate bonds, U.S. Government obligations and bank loans to corporate borrowers, and may have fixed, floating or variable rates.  The Fund typically focuses on securities that have short durations (i.e., have an expected redemption through maturity, call or other corporate action within three years or less from the time of purchase).  The Fund may invest up to 20% of its total assets in foreign fixed-income securities, including those denominated in U.S. dollars or other currencies, and may also invest without limit in Rule 144A fixed-income securities. Additionally, the Fund may invest up to 15% of its total assets in interest rate swaps for hedging purposes, up to 15% of its total assets in convertible bonds, and up to 10% of its total assets in preferred stocks.  The Fund may also utilize leverage of no more than 33% of the Fund’s total assets as part of the portfolio management process.  In order to purchase securities, the Fund may create leverage by borrowing money against a line of credit.  The Fund may also create leverage by borrowing money against a margin account where the Fund’s portfolio holdings and cash serve as collateral for the loan.

Duration is a measure of a debt security’s price sensitivity to yield.  Higher duration indicates debt securities that are more sensitive to interest rate changes.  Bonds with shorter duration are typically less sensitive to interest rate changes.  Duration takes into account a debt security’s cash flows over time, including the possibility that a debt security might be prepaid by the issuer or redeemed by the holder prior to its stated maturity date.  In contrast, maturity measures only the time until final payment is due.

In selecting the Fund’s investments, the Advisor will employ a multi-faceted, “bottom up” investment approach that utilizes three proprietary analytical tools.  These three tools include: (1) Quadrant Analysis (which categorizes a company into one of four proprietary categories or quadrants), (2) C.Scope® (which assigns each company a credit score) and (3) Relative Value Monitor (which considers a bond’s yield relative to its risk as compared to other similar investments).  These tools are integral to the Advisor in assessing the potential risk and relative value of each investment and also assist the Advisor in identifying companies that are likely to have the ability to meet their interest and principal payments on their debt securities.

Investment candidates are analyzed in depth at a variety of risk levels.  Investments are not made on the basis of one single factor.  Rather, investments are made based on the careful consideration of a variety of factors, including:

·   Analyses of business risks (including leverage and technology risk) and macro risks (including interest rate trends, capital market conditions and default rates)

·   Assessment of the industry’s attractiveness and competitiveness

·   Evaluation of the business, including core strengths and competitive weaknesses

·   Qualitative evaluation of the management team, including in-person meetings or conference calls with key managers

·   Quantitative analyses of the company’s financial statements

The Advisor adheres to a rules-based sell discipline to identify early credit deterioration.  The triggering of certain events, including a decline in the market value of the issue, results in an immediate review of the credit and may lead to an outright sale.

Principal Investment Risks

Losing all or a portion of your investment is a risk of investing in the Fund.  The success of the Fund cannot be guaranteed.  There are risks associated with investments in the types of securities in which the Fund invests.  These risks include:

 • Bank Loan Risk.  The Fund’s investments in secured and unsecured assignments of bank loans may create substantial risk.  In making investments in such loans, which are made by banks or other financial intermediaries to borrowers, the Fund will depend primarily upon the creditworthiness of the borrower for payment of principal and interest.  

 • Convertible Bond Risk.  Convertible bonds are hybrid securities that have characteristics of both bonds and common stocks and are therefore subject to both debt security risks and equity risk.  Convertible bonds are subject to equity risk especially when their conversion value is greater than the interest and principal value of the bond.  The prices of equity securities may rise or fall because of economic or political changes and may decline over short or extended periods of time.

 • Counterparty Risk. Counterparty risk arises upon entering into borrowing arrangements or derivative transactions and is the risk from the potential inability of counterparties to meet the terms of their contracts.  

 •   Credit Risk.  The issuers of the bonds and other debt securities held by the Fund may not be able to make interest or principal payments.  

 •   Derivatives Risk. The Fund may invest in derivative securities for bona fide hedging purposes.  A derivative security is a financial contract whose value is based on (or “derived from”) a traditional security (such as a bond) or a market index.  Derivatives involve the risk of improper valuation, the risk of ambiguous documentation and the risk that changes in the value of the derivative may not correlate perfectly with the underlying security.  

 •   Foreign Securities Risk.  Investments in foreign securities involve certain risks not associated with investments in U.S. companies.  Foreign securities in the Fund’s portfolio subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social and other conditions or events occurring in the country, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices.  

 •   High Yield Risk. High yield debt obligations are speculative investments that are usually issued by highly leveraged (indebted) companies, which means there is an increased risk that these companies might not generate sufficient cash flow to pay their debts.  Consequently, high yield securities and loans entail greater risk of loss of principal than securities and loans that are investment grade rated.  

 •   Impairment of Collateral Risk.  The value of any collateral securing a bond or loan can decline, and may be insufficient to meet the borrower’s obligations or difficult to liquidate.  In addition, the Fund’s access to collateral may be limited by bankruptcy or other insolvency laws.  

 •   Interest Rate Risk.  In general, the value of bonds and other fixed income instruments falls when interest rates rise.  Longer term obligations are usually more sensitive to interest rate changes than shorter term obligations.  

 •   Investment Risk.  The Fund invests primarily in high yield debt obligations issued by companies that may have significant risks as a result of business, financial, market or legal uncertainties.  There can be no assurance that the Advisor will correctly evaluate the nature and magnitude of the various factors that could affect the value of, and return on, the Fund’s investments.  

 •   Leverage Risk.  Leverage is the practice of borrowing money to purchase securities.  Leverage can increase the investment returns of the Fund if the securities purchased increase in value in an amount exceeding the cost of the borrowing.  However, if the securities decrease in value, the Fund will suffer a greater loss than would have resulted without the use of leverage.  

 •   Liquidity Risk.  Low or lack of trading volume may make it difficult to sell securities held by the Fund at quoted market prices.  

 •    Management Risk. The Fund is subject to management risk because it is an actively managed portfolio.  The Advisor’s management practices and investment strategies might not work to produce the desired results.  

 •    Market Risk.  The prices of some or all of the securities in which the Fund invests may decline for a number of reasons, including in response to economic developments and perceptions about the creditworthiness of individual issuers.  There is more risk that prices will go down for investors investing over short time horizons. Market risk may affect a single issuer, sector of the economy, industry, or the market as a whole.  

 • Newer Fund Risk.The Fund is newer with a limited operating history and there can be no assurance that the Fund will grow to or maintain an economically viable size.  

 • Preferred Stock Risk.  Preferred stocks may be more volatile than fixed income securities and are more correlated with the issuer’s underlying common stock than fixed income securities.  Additionally, the dividend on a preferred stock may be changed or omitted by the issuer.  

 • Rule 144A Securities Risk. The market for Rule 144A securities typically is less active than the market for publicly-traded securities. Rule 144A securities carry the risk that the liquidity of these securities may become impaired, making it more difficult for the Fund to sell these bonds.

Performance

When the Fund has been in operation for a full calendar year, performance information will be shown here.  Updated performance information will be available on the Fund’s website at www.shenkmanfunds.com, once the website is operational, or by calling the Fund toll-free at 1-855-SHENKMAN (1-855-743-6562).

[1] Other expenses are based on estimated amounts for the current fiscal year.

[2] Shenkman Capital Management, Inc. (the "Advisor") has contractually agreed to waive a portion or all of its management fees and pay Fund expenses (excluding acquired fund fees and expenses ("AFFE"), interest, taxes, interest and dividends on securities sold short and extraordinary expenses) in order to limit Net Annual Fund Operating Expenses to 1.00%, 1.75%, 0.75% and 0.65% of average daily net assets of the Fund's Class A shares, Class C shares, Class F shares and Institutional Class shares, respectively (the "Expense Caps"). The Expense Caps will remain in effect through at least May 31, 2014, and may be terminated only by the Trust's Board of Trustees (the "Board"). The Advisor may request recoupment of previously waived fees and paid expenses from the Fund for three years from the date they were waived or paid, subject to the Expense Caps.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Shenkman Short Duration High Income Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Shenkman Short Duration High Income Fund (the “Fund”) seeks to generate a high level of current income.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.  You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Fund’s Class A shares.  More information about these and other discounts is available from your financial professional and in the “Class A Shares Sales Charge Reductions and Waivers” section beginning on page 23 of the Fund’s Prospectus and the “Breakpoints/Volume Discounts and Sales Charge Waivers” section on page 32 of the Fund’s Statement of Additional Information (“SAI”).

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance.

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Fund's Class A shares.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 100,000

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.  The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same (taking into account the Expense Caps only in the first year).  Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

if you redeem your shares at the end of the period

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

if you do not redeem your shares at the end of the period

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies of the Fund

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund will invest at least 80% of its net assets (plus any borrowings for investment purposes) in fixed income securities and loans issued by companies that are rated below investment grade (i.e., “junk” bonds and loans). The Fund considers below investment grade securities to include securities with ratings lower than BBB- by Standard & Poor’s® Ratings Group (“S&P”) or Baa3 by Moody’s Investors Service©, Inc. (“Moody’s”), or that are not rated or considered by the Advisor to be equivalent to high yield securities.  The Fund generally invests in high yield securities rated CCC or better by S&P or Moody’s, but retains the discretion to invest in even lower rated securities.

The fixed income securities and loans in which the Fund expects to invest include traditional corporate bonds, U.S. Government obligations and bank loans to corporate borrowers, and may have fixed, floating or variable rates.  The Fund typically focuses on securities that have short durations (i.e., have an expected redemption through maturity, call or other corporate action within three years or less from the time of purchase).  The Fund may invest up to 20% of its total assets in foreign fixed-income securities, including those denominated in U.S. dollars or other currencies, and may also invest without limit in Rule 144A fixed-income securities. Additionally, the Fund may invest up to 15% of its total assets in interest rate swaps for hedging purposes, up to 15% of its total assets in convertible bonds, and up to 10% of its total assets in preferred stocks.  The Fund may also utilize leverage of no more than 33% of the Fund’s total assets as part of the portfolio management process.  In order to purchase securities, the Fund may create leverage by borrowing money against a line of credit.  The Fund may also create leverage by borrowing money against a margin account where the Fund’s portfolio holdings and cash serve as collateral for the loan.

Duration is a measure of a debt security’s price sensitivity to yield.  Higher duration indicates debt securities that are more sensitive to interest rate changes.  Bonds with shorter duration are typically less sensitive to interest rate changes.  Duration takes into account a debt security’s cash flows over time, including the possibility that a debt security might be prepaid by the issuer or redeemed by the holder prior to its stated maturity date.  In contrast, maturity measures only the time until final payment is due.

In selecting the Fund’s investments, the Advisor will employ a multi-faceted, “bottom up” investment approach that utilizes three proprietary analytical tools.  These three tools include: (1) Quadrant Analysis (which categorizes a company into one of four proprietary categories or quadrants), (2) C.Scope® (which assigns each company a credit score) and (3) Relative Value Monitor (which considers a bond’s yield relative to its risk as compared to other similar investments).  These tools are integral to the Advisor in assessing the potential risk and relative value of each investment and also assist the Advisor in identifying companies that are likely to have the ability to meet their interest and principal payments on their debt securities.

Investment candidates are analyzed in depth at a variety of risk levels.  Investments are not made on the basis of one single factor.  Rather, investments are made based on the careful consideration of a variety of factors, including:

·   Analyses of business risks (including leverage and technology risk) and macro risks (including interest rate trends, capital market conditions and default rates)

·   Assessment of the industry’s attractiveness and competitiveness

·   Evaluation of the business, including core strengths and competitive weaknesses

·   Qualitative evaluation of the management team, including in-person meetings or conference calls with key managers

·   Quantitative analyses of the company’s financial statements

The Advisor adheres to a rules-based sell discipline to identify early credit deterioration.  The triggering of certain events, including a decline in the market value of the issue, results in an immediate review of the credit and may lead to an outright sale.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Losing all or a portion of your investment is a risk of investing in the Fund.  The success of the Fund cannot be guaranteed.  There are risks associated with investments in the types of securities in which the Fund invests.  These risks include:

 • Bank Loan Risk.  The Fund’s investments in secured and unsecured assignments of bank loans may create substantial risk.  In making investments in such loans, which are made by banks or other financial intermediaries to borrowers, the Fund will depend primarily upon the creditworthiness of the borrower for payment of principal and interest.  

 • Convertible Bond Risk.  Convertible bonds are hybrid securities that have characteristics of both bonds and common stocks and are therefore subject to both debt security risks and equity risk.  Convertible bonds are subject to equity risk especially when their conversion value is greater than the interest and principal value of the bond.  The prices of equity securities may rise or fall because of economic or political changes and may decline over short or extended periods of time.

 • Counterparty Risk. Counterparty risk arises upon entering into borrowing arrangements or derivative transactions and is the risk from the potential inability of counterparties to meet the terms of their contracts.  

 •   Credit Risk.  The issuers of the bonds and other debt securities held by the Fund may not be able to make interest or principal payments.  

 •   Derivatives Risk. The Fund may invest in derivative securities for bona fide hedging purposes.  A derivative security is a financial contract whose value is based on (or “derived from”) a traditional security (such as a bond) or a market index.  Derivatives involve the risk of improper valuation, the risk of ambiguous documentation and the risk that changes in the value of the derivative may not correlate perfectly with the underlying security.  

 •   Foreign Securities Risk.  Investments in foreign securities involve certain risks not associated with investments in U.S. companies.  Foreign securities in the Fund’s portfolio subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social and other conditions or events occurring in the country, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices.  

 •   High Yield Risk. High yield debt obligations are speculative investments that are usually issued by highly leveraged (indebted) companies, which means there is an increased risk that these companies might not generate sufficient cash flow to pay their debts.  Consequently, high yield securities and loans entail greater risk of loss of principal than securities and loans that are investment grade rated.  

 •   Impairment of Collateral Risk.  The value of any collateral securing a bond or loan can decline, and may be insufficient to meet the borrower’s obligations or difficult to liquidate.  In addition, the Fund’s access to collateral may be limited by bankruptcy or other insolvency laws.  

 •   Interest Rate Risk.  In general, the value of bonds and other fixed income instruments falls when interest rates rise.  Longer term obligations are usually more sensitive to interest rate changes than shorter term obligations.  

 •   Investment Risk.  The Fund invests primarily in high yield debt obligations issued by companies that may have significant risks as a result of business, financial, market or legal uncertainties.  There can be no assurance that the Advisor will correctly evaluate the nature and magnitude of the various factors that could affect the value of, and return on, the Fund’s investments.  

 •   Leverage Risk.  Leverage is the practice of borrowing money to purchase securities.  Leverage can increase the investment returns of the Fund if the securities purchased increase in value in an amount exceeding the cost of the borrowing.  However, if the securities decrease in value, the Fund will suffer a greater loss than would have resulted without the use of leverage.  

 •   Liquidity Risk.  Low or lack of trading volume may make it difficult to sell securities held by the Fund at quoted market prices.  

 •    Management Risk. The Fund is subject to management risk because it is an actively managed portfolio.  The Advisor’s management practices and investment strategies might not work to produce the desired results.  

 •    Market Risk.  The prices of some or all of the securities in which the Fund invests may decline for a number of reasons, including in response to economic developments and perceptions about the creditworthiness of individual issuers.  There is more risk that prices will go down for investors investing over short time horizons. Market risk may affect a single issuer, sector of the economy, industry, or the market as a whole.  

 • Newer Fund Risk.The Fund is newer with a limited operating history and there can be no assurance that the Fund will grow to or maintain an economically viable size.  

 • Preferred Stock Risk.  Preferred stocks may be more volatile than fixed income securities and are more correlated with the issuer’s underlying common stock than fixed income securities.  Additionally, the dividend on a preferred stock may be changed or omitted by the issuer.  

 • Rule 144A Securities Risk. The market for Rule 144A securities typically is less active than the market for publicly-traded securities. Rule 144A securities carry the risk that the liquidity of these securities may become impaired, making it more difficult for the Fund to sell these bonds.

Risk Lose Money [Text]

rr_RiskLoseMoney

Losing all or a portion of your investment is a risk of investing in the Fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

When the Fund has been in operation for a full calendar year, performance information will be shown here.  Updated performance information will be available on the Fund’s website at www.shenkmanfunds.com, once the website is operational, or by calling the Fund toll-free at 1-855-SHENKMAN (1-855-743-6562).

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

When the Fund has been in operation for a full calendar year, performance information will be shown here.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-855-743-6562

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.shenkmanfunds.com

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.00%

Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption price, whichever is less)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.55%

Distribution and Service (Rule 12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Plan Fee

rr_Component1OtherExpensesOverAssets

0.10%

Other Expenses (includes Shareholder Servicing Plan Fee)

rr_OtherExpensesOverAssets

0.66%

^[1]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.47%

Less: Fee Waiver and Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.46%)

^[2]

Net Annual Fund Operating Expenses

rr_NetExpensesOverAssets

1.01%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

400

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

707

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

400

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

707

Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption price, whichever is less)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.55%

Distribution and Service (Rule 12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Shareholder Servicing Plan Fee

rr_Component1OtherExpensesOverAssets

0.10%

Other Expenses (includes Shareholder Servicing Plan Fee)

rr_OtherExpensesOverAssets

0.66%

^[1]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

2.22%

Less: Fee Waiver and Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.46%)

^[2]

Net Annual Fund Operating Expenses

rr_NetExpensesOverAssets

1.76%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

279

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

650

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

179

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

650

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption price, whichever is less)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.55%

Distribution and Service (Rule 12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Plan Fee

rr_Component1OtherExpensesOverAssets

none

Other Expenses (includes Shareholder Servicing Plan Fee)

rr_OtherExpensesOverAssets

0.56%

^[1]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.12%

Less: Fee Waiver and Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.46%)

^[2]

Net Annual Fund Operating Expenses

rr_NetExpensesOverAssets

0.66%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

67

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

310

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

67

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

310

Class F

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption price, whichever is less)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.55%

Distribution and Service (Rule 12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Plan Fee

rr_Component1OtherExpensesOverAssets

0.10%

Other Expenses (includes Shareholder Servicing Plan Fee)

rr_OtherExpensesOverAssets

0.66%

^[1]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.22%

Less: Fee Waiver and Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.46%)

^[2]

Net Annual Fund Operating Expenses

rr_NetExpensesOverAssets

0.76%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

78

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

342

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

78

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

$ 342

[1] Other expenses are based on estimated amounts for the current fiscal year.

[2] Shenkman Capital Management, Inc. (the "Advisor") has contractually agreed to waive a portion or all of its management fees and pay Fund expenses (excluding acquired fund fees and expenses ("AFFE"), interest, taxes, interest and dividends on securities sold short and extraordinary expenses) in order to limit Net Annual Fund Operating Expenses to 1.00%, 1.75%, 0.75% and 0.65% of average daily net assets of the Fund's Class A shares, Class C shares, Class F shares and Institutional Class shares, respectively (the "Expense Caps"). The Expense Caps will remain in effect through at least May 31, 2014, and may be terminated only by the Trust's Board of Trustees (the "Board"). The Advisor may request recoupment of previously waived fees and paid expenses from the Fund for three years from the date they were waived or paid, subject to the Expense Caps.

XML

Document and Entity Information	0 Months Ended
	Sep. 30, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Sep. 30, 2012
Registrant Name	ADVISORS SERIES TRUST
Central Index Key	0001027596
Amendment Flag	false
Document Creation Date	May 16, 2013
Document Effective Date	May 16, 2013
Prospectus Date	May 17, 2013
Shenkman Short Duration High Income Fund | Class A
Risk/Return:
Trading Symbol	SCFAX
Shenkman Short Duration High Income Fund | Institutional Class
Risk/Return:
Trading Symbol	SCFIX
Shenkman Short Duration High Income Fund | Class F
Risk/Return:
Trading Symbol	SCFFX