485BPOS

As filed with the Securities and Exchange Commission on July 17, 2013

Securities Act File No. 333-180881

Investment Company Act File No. 811-22701

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. 5	[X]
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	[X]
Amendment No. 6	[X]

(Check appropriate box or boxes.)

ARDEN INVESTMENT SERIES TRUST

(Exact Name of Registrant as Specified in Charter)

375 Park Avenue, 32nd Floor

New York, NY 10152

(Address of Principal Executive Offices)

Registrant’s Telephone Number, including Area Code: (212) 751-5252

Henry P. Davis

Arden Asset Management LLC

375 Park Avenue

32nd Floor

New York, New York 10152

(Name and Address of Agent for Service)

Copy to:

George M. Silfen, Esq.

Kramer Levin Naftalis & Frankel LLP

1177 Avenue of the Americas

New York, NY 10036

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

[x] immediately upon filing pursuant to paragraph (b)

[  ] on (date) pursuant to paragraph (b)

[  ] 60 days after filing pursuant to paragraph (a)(1)

[  ] on (date) pursuant to paragraph (a)(1)

[  ] 75 days after filing pursuant to paragraph (a)(2)

[  ] on (date) 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.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) of the Securities Act and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York and State of New York on the 17^th day of July, 2013.

Arden Investment Series Trust
By:	/s/ Henry P. Davis
	Henry P. Davis Trustee, President and Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Henry P. Davis Henry P. Davis	Trustee, President and Chief Executive Officer	July 17, 2013
/s/ Charles S. Crow, III* Charles S. Crow, III	Trustee	July 17, 2013
/s/ Richard B. Gross* Richard B. Gross	Trustee	July 17, 2013
/s/ David C. Reed* David C. Reed	Trustee	July 17, 2013
/s/ Andrew Katz* Andrew Katz	Chief Financial Officer	July 17, 2013

* This registration statement has been signed by each of the persons so indicated by the undersigned as attorney in fact.

/s/ Henry P. Davis

Henry P. Davis, Attorney-in-Fact

EXHIBIT INDEX

EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Arden Investment Series Trust
Prospectus Date	rr_ProspectusDate	Oct. 26, 2012
Arden Alternative Strategies Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	SUMMARY OF THE FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to achieve capital appreciation.
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 (“Shares”).
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, which has not yet commenced operations, will pay 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 Shares are held in a taxable account. These costs, which will not be reflected in annual fund operating expenses or in the Example above, will reduce the Fund's performance.
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	“Other Expenses” are based on estimates for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense 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. Although your actual costs may be higher or lower, based on these assumptions your costs at the end of each period would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	In pursuing the Fund’s objective, Arden Asset Management LLC (the “Adviser”) seeks to achieve a relatively low correlation to the major equity and fixed income markets through the allocation of the assets of the Fund among a number of sub-advisers (the “Sub-Advisers”) that employ a variety of alternative investment strategies. The Adviser is responsible for selecting each Sub-Adviser and for determining the amount of Fund assets allocated to each Sub-Adviser. When allocating assets among Sub-Advisers, the Adviser considers a range of factors including each Sub-Adviser’s investment style and historical performance, as well as various characteristics of the Sub-Adviser’s expected investment portfolio. The main strategies that may be employed by the Fund’s Sub-Advisers include: Relative Value Strategies, which seek to exploit differences in valuation through the simultaneous purchase and sale of related financial instruments; Event Driven Strategies, which involve investing in securities of companies currently or prospectively involved in a wide variety of corporate transactions where the investment thesis is predicated on the anticipated effect of a specific event; Global Macro/Fixed Income Strategies, which seek to analyze macroeconomic variables to identify dislocations and forecast future moves in global asset/securities prices on a directional or relative value basis; and Equity Hedge (Fundamental and Quantitative) Strategies, which seek to identify equities that are trading under or over their perceived intrinsic value or are deemed to be mispriced based on fundamental, statistical, technical or other factors. Tactical and Other Strategies, which relate to a variety of strategic and opportunistic investment strategies not captured above, such as short-term trading opportunities. As a result of the Sub-Advisers’ strategies, the Fund may invest in long and short positions in, among other investments: equity and fixed income securities of U.S. companies and non-U.S. companies traded on U.S. and non-U.S. exchanges and in the over-the-counter markets, financial futures and options thereon, foreign currency forward contracts, and in asset-based investments such as real estate mortgages and tax liens. Derivatives may be used by the Fund for a variety of purposes, such as to seek economic exposure to one or more alternative strategies, enhance returns, increase investment flexibility, speculate on a targeted investment opportunity, or for hedging purposes. The Sub-Advisers have broad discretion in the types of securities or instruments they may own, the type of trading strategies they may employ, and the amount of leverage they may use. The risk of loss may be significant if a Sub-Adviser employs valuation assumptions or credit judgments that are incorrect, incorrectly evaluates market conditions or the nature and extent of spread relationships, or otherwise makes investment decisions that prove to be unprofitable. Additionally, up to 20% of the Fund's assets may be managed directly by the Adviser. The Adviser may invest up to 10% of these assets in unaffiliated hedge funds, funds traded publicly on foreign exchanges, and, to a lesser extent, affiliated and unaffiliated open-end and closed-end registered investment companies (“Underlying Funds”). Substantially all Underlying Funds are expected to be “liquid” (i.e., holdings that the Fund would be able to sell or dispose of in the ordinary course of business within seven calendar days). A portion of the Fund's assets (up to 15%) is expected to be invested in one or more wholly-owned subsidiaries formed under the laws of the Cayman Islands (a "Subsidiary"). Any Subsidiary will be advised by the Adviser and may invest its assets in Underlying Funds or limited liability companies or other business entities (each, a "Trading Entity"), the trading of each of which will be managed on a discretionary basis by a different third-party manager or Sub-Adviser, typically a commodity trading advisor (a "Trading Advisor") pursuant to such Trading Advisor's commodity-related investment program (a "managed futures program"). Each Trading Entity will be wholly-owned by the Subsidiary and thus indirectly wholly owned by the Fund. Portions of the Subsidiary's assets may also be managed directly by a Trading Advisor which, in this case, would serve as a Sub-Adviser to the Subsidiary and indirectly the Fund.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Fund's investments are subject to a variety of risks that may cause the Fund's net asset value to fluctuate over time. Therefore, the value of your investment in the Fund could decline and you could lose money. Also, there is no assurance that the Adviser will achieve the Fund's objective. As an investor in the Fund, your investment is subject to the following risks: Multi-Manager Risk is that the success of the Fund's investment strategy depends on, among other things, the Adviser's ability to select Sub-Advisers to implement the Fund's investment objective and the Adviser's success in allocating assets to those Sub-Advisers. Event-Driven Trading involves the risk that the special situation identified may not occur as anticipated and that this has a negative impact upon the market price of a stock. Equity Market Risk is the risk that the market value of the securities in which the Fund invests may fall or fail to rise. Market Volatility Risk is the risk that markets are volatile and the values of individual securities and other instruments can decline significantly in response to adverse issuer, political, regulatory, market, economic or other developments that may cause broad changes in market values. Company Risk is the risk that a company in which the Fund is invested may perform poorly, and therefore, the value of its stocks and other securities may decline. Risks of Foreign Investing is the risk that because the Fund may invest in foreign securities, the Fund may be subject to the risks associated with foreign securities, such as country risk (the potentially adverse political, economic and other conditions of the country), currency risk (the constantly changing exchange rate between a local currency and the U.S. dollar) and custody risk (the risk associated with the process of clearing and settling Fund trades in foreign markets). This risk also includes the risk of investing in offshore funds, which are not subject to the investor protections of the Investment Company Act of 1940 (the "1940 Act") and also give rise to the aforementioned risks of foreign investing. Changes in tax and other laws could also adversely affect investments in offshore Underlying Funds. Emerging and Developing Markets Risk is the risk associated with the Fund's investments in securities of companies located or traded in developing or emerging markets, which are at an early stage of development and are significantly volatile. Therefore, the above risks of foreign investing are often more pronounced in these markets. Derivatives may be a significant component of the Fund's investment strategy. Derivatives are subject to the risk that gains or losses may be substantial, because a relatively small price movement in the underlying security(ies), instrument, currency or index may result in a substantial gain or loss. Derivatives will typically increase exposure to the principal risks to which the Fund is otherwise exposed, and are subject to the following additional risks: Counterparty credit risk (the risk that a counterparty to the derivative instrument becomes bankrupt, insolvent, enters administration, liquidates or otherwise fails to perform its obligations due to financial difficulties, and the Fund may obtain no recovery of its investment, and any recovery may be delayed); Hedging risk (the risk that derivative instruments used to hedge against an opposite position may offset losses, but they may also offset gains); Correlation risk (the risk that there may be an incomplete correlation between the hedge and the opposite position, which may result in increased or unanticipated losses); Liquidity risk (the risk that the derivative instrument may be difficult or impossible to sell or terminate); and Leverage risk (the risk that losses from the derivative instrument may be greater than the amount invested in the derivative instrument). Derivatives Options Risk is the risk that the Fund may be exposed to when it purchases or sells call or put options, which are in addition to the risks relating to "Derivatives" described above. In order for a call option to be profitable, the market price of the underlying security must rise sufficiently above the exercise price to cover the premium and transaction costs. These costs will reduce any profit that might have realized had it bought the underlying security at the time it purchased the call option. For a put option to be profitable, the market price of the underlying security must decline sufficiently below the exercise price to cover the premium and transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from appreciation of the underlying security by the premium paid for the put option and by transaction costs. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price. Derivatives Swaps Risk involve greater risks than direct investment in the underlying securities, because swaps are subject to the risks relating to "Derivatives" described above. Further, total return swaps are also subject to the particular risk that the swaps could result in losses if the underlying asset or reference does not perform as anticipated. Such transactions can have the potential for unlimited losses. Short Sales are expected to comprise a significant component of the Fund's investment strategy. It is considered a speculative investment practice. A short sale of a security involves the risk of an unlimited increase in the market price of the security which could result in an inability to cover the short position and thus a theoretically unlimited loss. Short sales may also subject the Fund to leverage risk (i.e., the risk that losses could well exceed the Fund's investment). This can occur, for example, when the Fund fails to earn as much on an investment purchased with borrowed funds as it pays for the use of those funds. There can be no assurance that securities necessary to cover a short position will be available for purchase. Debt Securities held by the Fund are subject to credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a debt security will be unable to make interest payments or repay principal when it becomes due. Interest rate risk refers to fluctuations in the value of a debt security resulting from changes in the general level of interest rates. The Fund may invest in "high yield", lower rated (or unrated) securities (commonly referred to as "junk bonds"). These instruments are considered speculative and have a much greater risk of default, thereby subjecting the Fund to greater degrees of credit risk (risk of loss) and interest rate risk than higher-rated securities. Convertible Securities held by the Fund are subject to the usual risks associated with associated with debt securities, such as interest rate risk and credit risk. Convertible securities also react to changes in the value of the common stock into which they convert, and are thus subject to market risk. Leverage. Some or all of the Fund's Sub-Advisers may borrow money from banks for investment purposes and, thus, the Fund may make margin purchases of securities, to the extent permitted by the 1940 Act. This practice, which is known as "leverage," is speculative and can involve significant risk of loss. The Fund is also subject to leverage risk in connection with the Sub-Advisers' speculative investment practices, such as using short sales, derivatives or other instruments where the risk of loss exceeds the amount invested.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Fund's investments are subject to a variety of risks that may cause the Fund's net asset value to fluctuate over time. Therefore, the value of your investment in the Fund could decline and you could lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Annual Total Returns
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	A bar chart and past performance table are not included in this Prospectus because the Fund has not completed a full calendar year of operations. After completion of its first calendar year of operations, the Fund will present these items and compare its performance to the performance of an index (showing how the Fund's average annual returns over various periods compare with those of its index).
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	A bar chart and past performance table are not included in this Prospectus because the Fund has not completed a full calendar year of operations. After completion of its first calendar year of operations, the Fund will present these items and compare its performance to the performance of an index (showing how the Fund's average annual returns over various periods compare with those of its index).
Arden Alternative Strategies Fund | Class I Shares
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions	rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther	none
Management Fee	rr_ManagementFeesOverAssets	1.85%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Dividend and Interest Expenses on Short Positions	rr_Component1OtherExpensesOverAssets	0.29%
Other Expenses	rr_OtherExpensesOverAssets	0.45%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.59%
Less Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Net Annual Fund Operating Expenses after Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	2.59%
1 Year	rr_ExpenseExampleYear01	$ 262
3 Years	rr_ExpenseExampleYear03	$ 805

[1] "Other Expenses" are based on estimates for the current fiscal year. "Other expenses" for the Class I Shares also includes investor and account servicing or "sub-transfer agency" costs to be paid to service agents of the Fund that maintain and administer omnibus accounts with the Fund and that have entered into service agreements with the Fund with respect to Class I Shares. Fees for these services are not expected to exceed 0.10% of the Fund's average daily net assets attributable to Class I Shares.

[2] The Fund's investment adviser, Arden Asset Management LLC, and the Fund have entered into an expense limitation and reimbursement agreement (the "Expense Limitation Agreement") described in detail on page 26 of this Prospectus.

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Arden Alternative Strategies Fund

SUMMARY OF THE FUND

Investment Objective

The Fund seeks to achieve capital appreciation.

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 (“Shares”).

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	Arden Alternative Strategies Fund Class I Shares
Maximum Sales Charge (Load) Imposed on Purchases	none
Maximum Deferred Sales Charge (Load)	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions	none

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

Annual Fund Operating Expenses		Arden Alternative Strategies Fund Class I Shares
Management Fee		1.85%
Distribution and Service (12b-1) Fees		none
Other Expenses	[1]	0.45%
Dividend and Interest Expenses on Short Positions		0.29%
Total Annual Fund Operating Expenses		2.59%
Less Fee Waiver/Expense Reimbursement	[2]	none
Net Annual Fund Operating Expenses after Fee Waiver/Expense Reimbursement		2.59%

Expense 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. Although your actual costs may be higher or lower, based on these assumptions your costs at the end of each period would be:

Expense Example (USD $)	1 Year	3 Years
Arden Alternative Strategies Fund Class I Shares	262	805

Portfolio Turnover.

The Fund, which has not yet commenced operations, will pay 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 Shares are held in a taxable account. These costs, which will not be reflected in annual fund operating expenses or in the Example above, will reduce the Fund's performance.

Principal Investment Strategies

In pursuing the Fund’s objective, Arden Asset Management LLC (the “Adviser”) seeks to achieve a relatively low correlation to the major equity and fixed income markets through the allocation of the assets of the Fund among a number of sub-advisers (the “Sub-Advisers”) that employ a variety of alternative investment strategies. The Adviser is responsible for selecting each Sub-Adviser and for determining the amount of Fund assets allocated to each Sub-Adviser. When allocating assets among Sub-Advisers, the Adviser considers a range of factors including each Sub-Adviser’s investment style and historical performance, as well as various characteristics of the Sub-Adviser’s expected investment portfolio.

The main strategies that may be employed by the Fund’s Sub-Advisers include:

• Relative Value Strategies, which seek to exploit differences in valuation through the simultaneous purchase and sale of related financial instruments;
• Event Driven Strategies, which involve investing in securities of companies currently or prospectively involved in a wide variety of corporate transactions where the investment thesis is predicated on the anticipated effect of a specific event;
• Global Macro/Fixed Income Strategies, which seek to analyze macroeconomic variables to identify dislocations and forecast future moves in global asset/securities prices on a directional or relative value basis; and
• Equity Hedge (Fundamental and Quantitative) Strategies, which seek to identify equities that are trading under or over their perceived intrinsic value or are deemed to be mispriced based on fundamental, statistical, technical or other factors.
• Tactical and Other Strategies, which relate to a variety of strategic and opportunistic investment strategies not captured above, such as short-term trading opportunities.

As a result of the Sub-Advisers’ strategies, the Fund may invest in long and short positions in, among other investments: equity and fixed income securities of U.S. companies and non-U.S. companies traded on U.S. and non-U.S. exchanges and in the over-the-counter markets, financial futures and options thereon, foreign currency forward contracts, and in asset-based investments such as real estate mortgages and tax liens. Derivatives may be used by the Fund for a variety of purposes, such as to seek economic exposure to one or more alternative strategies, enhance returns, increase investment flexibility, speculate on a targeted investment opportunity, or for hedging purposes.

The Sub-Advisers have broad discretion in the types of securities or instruments they may own, the type of trading strategies they may employ, and the amount of leverage they may use. The risk of loss may be significant if a Sub-Adviser employs valuation assumptions or credit judgments that are incorrect, incorrectly evaluates market conditions or the nature and extent of spread relationships, or otherwise makes investment decisions that prove to be unprofitable.

Additionally, up to 20% of the Fund's assets may be managed directly by the Adviser. The Adviser may invest up to 10% of these assets in unaffiliated hedge funds, funds traded publicly on foreign exchanges, and, to a lesser extent, affiliated and unaffiliated open-end and closed-end registered investment companies (“Underlying Funds”). Substantially all Underlying Funds are expected to be “liquid” (i.e., holdings that the Fund would be able to sell or dispose of in the ordinary course of business within seven calendar days). A portion of the Fund's assets (up to 15%) is expected to be invested in one or more wholly-owned subsidiaries formed under the laws of the Cayman Islands (a "Subsidiary"). Any Subsidiary will be advised by the Adviser and may invest its assets in Underlying Funds or limited liability companies or other business entities (each, a "Trading Entity"), the trading of each of which will be managed on a discretionary basis by a different third-party manager or Sub-Adviser, typically a commodity trading advisor (a "Trading Advisor") pursuant to such Trading Advisor's commodity-related investment program (a "managed futures program"). Each Trading Entity will be wholly-owned by the Subsidiary and thus indirectly wholly owned by the Fund. Portions of the Subsidiary's assets may also be managed directly by a Trading Advisor which, in this case, would serve as a Sub-Adviser to the Subsidiary and indirectly the Fund.

Principal Investment Risks

The Fund's investments are subject to a variety of risks that may cause the Fund's net asset value to fluctuate over time. Therefore, the value of your investment in the Fund could decline and you could lose money. Also, there is no assurance that the Adviser will achieve the Fund's objective.

As an investor in the Fund, your investment is subject to the following risks:

• Multi-Manager Risk is that the success of the Fund's investment strategy depends on, among other things, the Adviser's ability to select Sub-Advisers to implement the Fund's investment objective and the Adviser's success in allocating assets to those Sub-Advisers.
• Event-Driven Trading involves the risk that the special situation identified may not occur as anticipated and that this has a negative impact upon the market price of a stock.
• Equity Market Risk is the risk that the market value of the securities in which the Fund invests may fall or fail to rise.
• Market Volatility Risk is the risk that markets are volatile and the values of individual securities and other instruments can decline significantly in response to adverse issuer, political, regulatory, market, economic or other developments that may cause broad changes in market values.
• Company Risk is the risk that a company in which the Fund is invested may perform poorly, and therefore, the value of its stocks and other securities may decline.
• Risks of Foreign Investing is the risk that because the Fund may invest in foreign securities, the Fund may be subject to the risks associated with foreign securities, such as country risk (the potentially adverse political, economic and other conditions of the country), currency risk (the constantly changing exchange rate between a local currency and the U.S. dollar) and custody risk (the risk associated with the process of clearing and settling Fund trades in foreign markets). This risk also includes the risk of investing in offshore funds, which are not subject to the investor protections of the Investment Company Act of 1940 (the "1940 Act") and also give rise to the aforementioned risks of foreign investing. Changes in tax and other laws could also adversely affect investments in offshore Underlying Funds.
• Emerging and Developing Markets Risk is the risk associated with the Fund's investments in securities of companies located or traded in developing or emerging markets, which are at an early stage of development and are significantly volatile. Therefore, the above risks of foreign investing are often more pronounced in these markets.
• Derivatives may be a significant component of the Fund's investment strategy. Derivatives are subject to the risk that gains or losses may be substantial, because a relatively small price movement in the underlying security(ies), instrument, currency or index may result in a substantial gain or loss. Derivatives will typically increase exposure to the principal risks to which the Fund is otherwise exposed, and are subject to the following additional risks:
• Counterparty credit risk (the risk that a counterparty to the derivative instrument becomes bankrupt, insolvent, enters administration, liquidates or otherwise fails to perform its obligations due to financial difficulties, and the Fund may obtain no recovery of its investment, and any recovery may be delayed);
• Hedging risk (the risk that derivative instruments used to hedge against an opposite position may offset losses, but they may also offset gains);
• Correlation risk (the risk that there may be an incomplete correlation between the hedge and the opposite position, which may result in increased or unanticipated losses);
• Liquidity risk (the risk that the derivative instrument may be difficult or impossible to sell or terminate); and
• Leverage risk (the risk that losses from the derivative instrument may be greater than the amount invested in the derivative instrument).
• Derivatives Options Risk is the risk that the Fund may be exposed to when it purchases or sells call or put options, which are in addition to the risks relating to "Derivatives" described above. In order for a call option to be profitable, the market price of the underlying security must rise sufficiently above the exercise price to cover the premium and transaction costs. These costs will reduce any profit that might have realized had it bought the underlying security at the time it purchased the call option. For a put option to be profitable, the market price of the underlying security must decline sufficiently below the exercise price to cover the premium and transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from appreciation of the underlying security by the premium paid for the put option and by transaction costs. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price.
• Derivatives Swaps Risk involve greater risks than direct investment in the underlying securities, because swaps are subject to the risks relating to "Derivatives" described above. Further, total return swaps are also subject to the particular risk that the swaps could result in losses if the underlying asset or reference does not perform as anticipated. Such transactions can have the potential for unlimited losses.
• Short Sales are expected to comprise a significant component of the Fund's investment strategy. It is considered a speculative investment practice. A short sale of a security involves the risk of an unlimited increase in the market price of the security which could result in an inability to cover the short position and thus a theoretically unlimited loss. Short sales may also subject the Fund to leverage risk (i.e., the risk that losses could well exceed the Fund's investment). This can occur, for example, when the Fund fails to earn as much on an investment purchased with borrowed funds as it pays for the use of those funds. There can be no assurance that securities necessary to cover a short position will be available for purchase.
• Debt Securities held by the Fund are subject to credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a debt security will be unable to make interest payments or repay principal when it becomes due. Interest rate risk refers to fluctuations in the value of a debt security resulting from changes in the general level of interest rates. The Fund may invest in "high yield", lower rated (or unrated) securities (commonly referred to as "junk bonds"). These instruments are considered speculative and have a much greater risk of default, thereby subjecting the Fund to greater degrees of credit risk (risk of loss) and interest rate risk than higher-rated securities.
• Convertible Securities held by the Fund are subject to the usual risks associated with associated with debt securities, such as interest rate risk and credit risk. Convertible securities also react to changes in the value of the common stock into which they convert, and are thus subject to market risk.
• Leverage. Some or all of the Fund's Sub-Advisers may borrow money from banks for investment purposes and, thus, the Fund may make margin purchases of securities, to the extent permitted by the 1940 Act. This practice, which is known as "leverage," is speculative and can involve significant risk of loss. The Fund is also subject to leverage risk in connection with the Sub-Advisers' speculative investment practices, such as using short sales, derivatives or other instruments where the risk of loss exceeds the amount invested.

Annual Total Returns

A bar chart and past performance table are not included in this Prospectus because the Fund has not completed a full calendar year of operations. After completion of its first calendar year of operations, the Fund will present these items and compare its performance to the performance of an index (showing how the Fund's average annual returns over various periods compare with those of its index).

[1] "Other Expenses" are based on estimates for the current fiscal year. "Other expenses" for the Class I Shares also includes investor and account servicing or "sub-transfer agency" costs to be paid to service agents of the Fund that maintain and administer omnibus accounts with the Fund and that have entered into service agreements with the Fund with respect to Class I Shares. Fees for these services are not expected to exceed 0.10% of the Fund's average daily net assets attributable to Class I Shares.

[2] The Fund's investment adviser, Arden Asset Management LLC, and the Fund have entered into an expense limitation and reimbursement agreement (the "Expense Limitation Agreement") described in detail on page 26 of this Prospectus.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Arden Investment Series Trust
Prospectus Date	rr_ProspectusDate	Oct. 26, 2012
Document Creation Date	dei_DocumentCreationDate	Oct. 26, 2012

XML

Document and Entity Information	12 Months Ended
	Oct. 26, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Oct. 26, 2012
Registrant Name	Arden Investment Series Trust
Central Index Key	0001547625
Amendment Flag	false
Document Creation Date	Oct. 26, 2012
Document Effective Date	Nov. 01, 2012
Prospectus Date	Oct. 26, 2012