485BPOS

As filed with the Securities and Exchange Commission on June 27, 2018

Securities Act File No. 333-211881

Investment Company Act File No. 811-23160

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.   9	x
and/or
REGISTRATION STATEMENT UNDER THE  INVESTMENT COMPANY ACT OF 1940	x
Amendment No.  10	x

    GABELLI NEXTSHARES TRUST    

(Exact Name of Registrant as Specified in Charter)

One Corporate Center, Rye, New York 10580-1422

(Address of Principal Executive Offices)

Registrant’s Telephone Number, including Area Code: 1-800-422-3554

Agnes Mullady

Gabelli Funds, LLC

One Corporate Center

Rye, New York 10580-1422

(Name and Address of Agent for Service)

Copies to:

Andrea R. Mango, Esq.	Michael R. Rosella, Esq.
Gabelli NextShares Trust	Paul Hastings LLP
One Corporate Center	200 Park Avenue
Rye, New York 10580-1422	New York, New York 10166

It is proposed that this filing will become effective:

x immediately upon filing pursuant to paragraph (b); or

¨ on __________ pursuant to paragraph (b); or

¨ 60 days after filing pursuant to paragraph (a)(1); or

¨ on __________ pursuant to paragraph (a)(1); or

o 75 days after filing pursuant to paragraph (a)(2); or

¨ 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.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Rye, and State of New York, on the 27th day of June, 2018.

Gabelli NextShares Trust
By:	/s/ Agnes Mullady
Name:	Agnes Mullady
Title:	President and Principal Executive Officer

As required by the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the date indicated.

Signature	Title	Date
Mario J. Gabelli* Mario J. Gabelli	Chairman of the Board	June 27, 2018
/s/ Agnes Mullady Agnes Mullady	President (Principal Executive Officer)	June 27, 2018
/s/ John C. Ball John C. Ball	Treasurer (Principal Financial and Accounting Officer)	June 27, 2018
/s/ Andrea R. Mango Andrea R. Mango	Secretary	June 27, 2018
Salvatore M. Salibello* Salvatore M. Salibello	Trustee	June 27, 2018
Anthony S. Colavita* Anthony S. Colavita	Trustee	June 27, 2018
Kuni Nakamura* Kuni Nakamura	Trustee	June 27, 2018
Michael J. Melarkey* Michael J. Melarkey	Trustee	June 27, 2018
Frank J. Fahrenkopf, Jr.* Frank J. Fahrenkopf, Jr.	Trustee	June 27, 2018

*By:	/s/ Agnes Mullady
	Agnes Mullady
	Attorney-in-Fact

Exhibit Index

Exhibit No.	Description
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
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Sep. 30, 2017
Entity Registrant Name	dei_EntityRegistrantName	GABELLI NEXTSHARES TRUST
Entity Central Index Key	dei_EntityCentralIndexKey	0001637520
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Jun. 18, 2018
Document Effective Date	dei_DocumentEffectiveDate	Jun. 18, 2018
Prospectus Date	rr_ProspectusDate	Jun. 18, 2018
Gabelli Pet Parents'(TM) NextShares(TM) (Prospectus Summary) | Gabelli Pet Parents'(TM) NextShares(TM) | Gabelli Pet Parents'(TM) NextShares(TM)
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	PETZC

XML

Gabelli Pet Parents'(TM) NextShares(TM) (Prospectus Summary) | Gabelli Pet Parents'(TM) NextShares(TM)

Gabelli Pet Parents’ ^TM NextShares ^TM

(the “Pet Parents’ Fund” or the “Fund”)

Investment Objective

The Fund seeks to provide capital appreciation.

Fees and Expenses of the Fund:

The table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment):

Shareholder Fees

Gabelli Pet Parents'(TM) NextShares(TM)

Shareholder Fees (fees paid directly from your investment)

None

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

Annual Fund Operating Expenses	Gabelli Pet Parents'(TM) NextShares(TM)
Management Fees	1.00%
Other Expenses	3.58%	[1]
Total Annual Fund Operating Expenses	4.58%
Less Fee Waiver and/or Expense Reimbursement	3.68%	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.90%	[2]

Expense Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

The example assumes that you invest $10,000 in the Fund for the time periods shown 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 (except that the example reflects the Expense Cap through the first year after the commencement of investment operations). Investors may pay brokerage commissions on their purchases and sales of Fund shares, which are not reflected in the example. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
| | Gabelli Pet Parents'(TM) NextShares(TM) | USD ($)	92	1,049

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the example, affect the Fund’s performance. As the Fund is new, it does not have any portfolio turnover as of the date of this prospectus.

Principal Investment Strategies

Under normal market conditions, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in common and preferred shares of publicly traded domestic and foreign companies of all capitalization ranges in the pet industry. The pet industry includes companies that offer services and products for pets and pet owners (“Pet Parents”). Such companies will generally derive at least 50% of their revenues or profits from, or will devote at least 50% of their assets to the following sectors: manufacturers and distributors of pet food, pet supplies, veterinary pharmaceuticals, veterinary wellness, veterinary and other pet services, pet equipment, pet toys, and products and services that support Pet Parents regarding their pet activities (hereinafter the “Pet Industry”).

Gabelli Funds, LLC’s (the “Adviser”) investment philosophy with respect to securities is to identify assets that are selling in the public market at a discount to their private market value (“PMV”). The Adviser defines PMV as the value informed purchasers are willing to pay to acquire assets with similar characteristics. The Adviser also generally evaluates an issuer’s free cash flow and long term earnings trends. Finally, the Adviser looks for a catalyst, something indigenous to the company, its industry or geographic positioning that may surface additional value, including, but not limited to, industry developments, regulatory changes, changes in management, sale or spin-off of a division, or the development of a profitable new business.

The Fund is intended for investors seeking capital appreciation. It is not intended for those who wish to play short term swings in the stock market.

Principal Risks

You may want to invest in the Fund if:

• you are a long term investor

• you seek capital appreciation

• you wish to include a value strategy as a portion of your overall investments

The Fund’s share price will fluctuate with changes in the market value of the Fund’s portfolio securities. Your investment in the Fund is not guaranteed; you may lose money by investing in the Fund. When you sell Fund shares, they may be worth more or less than what you paid for them.

Investing in the Fund involves the following risks:

• Contingent Pricing Risk. Trading prices of Fund shares are directly linked to the Fund’s next-computed NAV, which is normally determined as of the close of regular market trading each business day. Buyers and sellers of shares will not know the value of their purchases and sales until the Fund’s NAV is determined at the end of the trading day. Like mutual funds, the Fund does not offer opportunities to transact intraday at currently (versus end of day) determined prices. Trade prices are contingent upon the determination of NAV and may vary significantly from anticipated levels (including estimates based on intraday indicative values disseminated by the Fund) during periods of market volatility. Although limit orders can be used to control differences in trade prices versus NAV, they cannot be used to control or limit trade execution prices.

• Equity Risk. Equity risk is the risk that the prices of the securities held by the Fund will fluctuate, sometimes rapidly and unpredictably, due to general market and economic conditions, perceptions regarding the industries in which the companies issuing the securities participate, and the issuer companies’ particular circumstances. Holders of equity securities only have rights to value in the company only after all issuer debts have been paid and they could lose their entire investment in a company that encounters financial difficulty.

• Foreign Securities Risk. Investments in foreign securities involve risks relating to political, social, and economic developments abroad, as well as risks resulting from the differences between the regulations to which U.S. and foreign issuers and markets are subject. These risks include expropriation, differing accounting and disclosure standards, currency exchange risks, settlement difficulties, market illiquidity, difficulties enforcing legal rights, and greater transaction costs.

• Industry Concentration Risk. The Fund invests a significant portion of its assets in companies in the Pet Industry, which includes manufacturers and distributors of pet food, pet supplies, veterinary pharmaceuticals, veterinary wellness, veterinary and other pet services, pet equipment, pet toys, and product and services that support Pet Parents regarding their pet activities. As a result, the value of the Fund’s shares will be more susceptible to the factors affecting those particular types of companies, including government regulation, greater price volatility for the overall market, rapid obsolescence of products and services, intense competition, and strong market reactions to pet- or industry-related developments.

• Management Risk. If the Adviser is incorrect in its assessment of the investment prospects of the securities the Fund holds, then the value of the Fund’s shares may decline.

• Market Trading Risk. Individual Fund shares may be purchased and sold only on a national securities exchange or alternative trading system through a broker-dealer, and may not be directly purchased or redeemed from the Fund. There can be no guarantee that an active trading market for shares will develop or be maintained, or that their listing will continue unchanged. Buying and selling shares may require you to pay brokerage commissions and expose you to other trading costs. Due to brokerage commissions and other transaction costs that may apply, frequent trading may detract from realized investment returns. Trading prices of shares may be above, at, or below the Fund’s NAV, will fluctuate in relation to NAV based on supply and demand in the market for shares and other factors, and may vary significantly from NAV during periods of market volatility. The return on your investment will be reduced if you sell shares at a greater discount or narrower premium to NAV than you acquired shares.

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

• Non-Diversification Risk. As a non-diversified fund, more of the Fund’s assets may be focused in the securities of a small number of issuers, which may make the value of the Fund’s shares more sensitive to changes in the market value of a single issuer or industry than shares of a diversified fund.

• Short Sale Risk . The Fund will incur a loss if it sells a security short and the price of the security rises rather than falls. Short sale expose the Fund to the risk that it may have to buy back the security sold short (also known as “covering” the short position) at a time when the security is at a higher price than it was when it was sold short. This will result in a loss to the Fund. The Fund’s investment performance may also suffer if the Fund is required to close out a short position earlier than it had intended. In addition, the Fund may be subject to expenses related to short sales that are not associated with investing in securities directly, such as the cost of borrowing securities sold short and margin account maintenance costs associated with the Fund’s open short positions. These expenses may negatively impact the performance of the Fund. Short positions introduce more risk to the Fund than long positions (purchases) because the maximum loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs. There is no maximum price limit for a security sold short. Therefore, in theory, securities sold short have unlimited risk of loss.

• Value Investing Risk. The Fund invests in “value” stocks. Value investing refers to buying securities that the Adviser believes are out of favor and/or undervalued in comparison to their peers or their prospects for growth. From time to time, “value” investing falls out of favor with investors. During those periods, the Fund’s relative performance may suffer.

Performance

The Fund has not yet commenced operations and, therefore, performance information is not yet available. Performance information will be available after the Fund has been in operation for one calendar year.

[1] Other Expenses are estimated for the first year of operations.

[2] Gabelli Funds, LLC has contractually agreed to waive its investment advisory fees and/or to reimburse expenses of the Fund to the extent necessary to maintain the Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement (excluding brokerage costs, acquired fund fees and expenses, interest, taxes, and extraordinary expenses) from exceeding 0.90% of the Fund's average daily net assets per year (the "Expense Cap"). This arrangement is in effect for one year from the commencement of investment operations, and may be terminated only by the Board of Trustees of the Company before such time. The Fund will carry forward, for a period not to exceed three fiscal years from the date that an amount is waived, any fees in excess of the expense limitation and repay the Adviser such amount provided the Fund is able to do so without exceeding the lesser of (1) the expense limit in effect at the time of the waiver or reimbursement, as applicable, or (2) the expense limit in effect at the time of recoupment.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001637520

Gabelli Pet Parents'(TM) NextShares(TM) (Prospectus Summary) | Gabelli Pet Parents'(TM) NextShares(TM)

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Gabelli Pet Parents’ ^TM NextShares ^TM

(the “Pet Parents’ Fund” or the “Fund”)

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks to provide capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund:

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the example, affect the Fund’s performance. As the Fund is new, it does not have any portfolio turnover as of the date of this prospectus.

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

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses are estimated for the first year of operations.

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 funds.

The example assumes that you invest $10,000 in the Fund for the time periods shown 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 (except that the example reflects the Expense Cap through the first year after the commencement of investment operations). Investors may pay brokerage commissions on their purchases and sales of Fund shares, which are not reflected in the example. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in common and preferred shares of publicly traded domestic and foreign companies of all capitalization ranges in the pet industry. The pet industry includes companies that offer services and products for pets and pet owners (“Pet Parents”). Such companies will generally derive at least 50% of their revenues or profits from, or will devote at least 50% of their assets to the following sectors: manufacturers and distributors of pet food, pet supplies, veterinary pharmaceuticals, veterinary wellness, veterinary and other pet services, pet equipment, pet toys, and products and services that support Pet Parents regarding their pet activities (hereinafter the “Pet Industry”).

Gabelli Funds, LLC’s (the “Adviser”) investment philosophy with respect to securities is to identify assets that are selling in the public market at a discount to their private market value (“PMV”). The Adviser defines PMV as the value informed purchasers are willing to pay to acquire assets with similar characteristics. The Adviser also generally evaluates an issuer’s free cash flow and long term earnings trends. Finally, the Adviser looks for a catalyst, something indigenous to the company, its industry or geographic positioning that may surface additional value, including, but not limited to, industry developments, regulatory changes, changes in management, sale or spin-off of a division, or the development of a profitable new business.

The Fund is intended for investors seeking capital appreciation. It is not intended for those who wish to play short term swings in the stock market.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Under normal market conditions, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in common and preferred shares of publicly traded domestic and foreign companies of all capitalization ranges in the pet industry.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may want to invest in the Fund if:

• you are a long term investor

• you seek capital appreciation

• you wish to include a value strategy as a portion of your overall investments

The Fund’s share price will fluctuate with changes in the market value of the Fund’s portfolio securities. Your investment in the Fund is not guaranteed; you may lose money by investing in the Fund. When you sell Fund shares, they may be worth more or less than what you paid for them.

Investing in the Fund involves the following risks:

• Contingent Pricing Risk. Trading prices of Fund shares are directly linked to the Fund’s next-computed NAV, which is normally determined as of the close of regular market trading each business day. Buyers and sellers of shares will not know the value of their purchases and sales until the Fund’s NAV is determined at the end of the trading day. Like mutual funds, the Fund does not offer opportunities to transact intraday at currently (versus end of day) determined prices. Trade prices are contingent upon the determination of NAV and may vary significantly from anticipated levels (including estimates based on intraday indicative values disseminated by the Fund) during periods of market volatility. Although limit orders can be used to control differences in trade prices versus NAV, they cannot be used to control or limit trade execution prices.

• Equity Risk. Equity risk is the risk that the prices of the securities held by the Fund will fluctuate, sometimes rapidly and unpredictably, due to general market and economic conditions, perceptions regarding the industries in which the companies issuing the securities participate, and the issuer companies’ particular circumstances. Holders of equity securities only have rights to value in the company only after all issuer debts have been paid and they could lose their entire investment in a company that encounters financial difficulty.

• Foreign Securities Risk. Investments in foreign securities involve risks relating to political, social, and economic developments abroad, as well as risks resulting from the differences between the regulations to which U.S. and foreign issuers and markets are subject. These risks include expropriation, differing accounting and disclosure standards, currency exchange risks, settlement difficulties, market illiquidity, difficulties enforcing legal rights, and greater transaction costs.

• Industry Concentration Risk. The Fund invests a significant portion of its assets in companies in the Pet Industry, which includes manufacturers and distributors of pet food, pet supplies, veterinary pharmaceuticals, veterinary wellness, veterinary and other pet services, pet equipment, pet toys, and product and services that support Pet Parents regarding their pet activities. As a result, the value of the Fund’s shares will be more susceptible to the factors affecting those particular types of companies, including government regulation, greater price volatility for the overall market, rapid obsolescence of products and services, intense competition, and strong market reactions to pet- or industry-related developments.

• Management Risk. If the Adviser is incorrect in its assessment of the investment prospects of the securities the Fund holds, then the value of the Fund’s shares may decline.

• Market Trading Risk. Individual Fund shares may be purchased and sold only on a national securities exchange or alternative trading system through a broker-dealer, and may not be directly purchased or redeemed from the Fund. There can be no guarantee that an active trading market for shares will develop or be maintained, or that their listing will continue unchanged. Buying and selling shares may require you to pay brokerage commissions and expose you to other trading costs. Due to brokerage commissions and other transaction costs that may apply, frequent trading may detract from realized investment returns. Trading prices of shares may be above, at, or below the Fund’s NAV, will fluctuate in relation to NAV based on supply and demand in the market for shares and other factors, and may vary significantly from NAV during periods of market volatility. The return on your investment will be reduced if you sell shares at a greater discount or narrower premium to NAV than you acquired shares.

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

• Non-Diversification Risk. As a non-diversified fund, more of the Fund’s assets may be focused in the securities of a small number of issuers, which may make the value of the Fund’s shares more sensitive to changes in the market value of a single issuer or industry than shares of a diversified fund.

• Short Sale Risk . The Fund will incur a loss if it sells a security short and the price of the security rises rather than falls. Short sale expose the Fund to the risk that it may have to buy back the security sold short (also known as “covering” the short position) at a time when the security is at a higher price than it was when it was sold short. This will result in a loss to the Fund. The Fund’s investment performance may also suffer if the Fund is required to close out a short position earlier than it had intended. In addition, the Fund may be subject to expenses related to short sales that are not associated with investing in securities directly, such as the cost of borrowing securities sold short and margin account maintenance costs associated with the Fund’s open short positions. These expenses may negatively impact the performance of the Fund. Short positions introduce more risk to the Fund than long positions (purchases) because the maximum loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs. There is no maximum price limit for a security sold short. Therefore, in theory, securities sold short have unlimited risk of loss.

• Value Investing Risk. The Fund invests in “value” stocks. Value investing refers to buying securities that the Adviser believes are out of favor and/or undervalued in comparison to their peers or their prospects for growth. From time to time, “value” investing falls out of favor with investors. During those periods, the Fund’s relative performance may suffer.

Risk Lose Money [Text]

rr_RiskLoseMoney

you may lose money by investing in the Fund.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

As a non-diversified fund, more of the Fund’s assets may be focused in the securities of a small number of issuers, which may make the value of the Fund’s shares more sensitive to changes in the market value of a single issuer or industry than shares of a diversified fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

Your investment in the Fund is not guaranteed

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The Fund has not yet commenced operations and, therefore, performance information is not yet available. Performance information will be available after the Fund has been in operation for one calendar year.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

The Fund has not yet commenced operations and, therefore, performance information is not yet available. Performance information will be available after the Fund has been in operation for one calendar year.

Gabelli Pet Parents'(TM) NextShares(TM) (Prospectus Summary) | Gabelli Pet Parents'(TM) NextShares(TM) | Gabelli Pet Parents'(TM) NextShares(TM)

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees (fees paid directly from your investment)

rr_ShareholderFeesColumnName

None

Management Fees

rr_ManagementFeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

3.58%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

4.58%

Less Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

3.68%

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.90%

^[2]

1 Year

rr_ExpenseExampleYear01

$ 92

3 Years

rr_ExpenseExampleYear03

$ 1,049

[1] Other Expenses are estimated for the first year of operations.

[2] Gabelli Funds, LLC has contractually agreed to waive its investment advisory fees and/or to reimburse expenses of the Fund to the extent necessary to maintain the Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement (excluding brokerage costs, acquired fund fees and expenses, interest, taxes, and extraordinary expenses) from exceeding 0.90% of the Fund's average daily net assets per year (the "Expense Cap"). This arrangement is in effect for one year from the commencement of investment operations, and may be terminated only by the Board of Trustees of the Company before such time. The Fund will carry forward, for a period not to exceed three fiscal years from the date that an amount is waived, any fees in excess of the expense limitation and repay the Adviser such amount provided the Fund is able to do so without exceeding the lesser of (1) the expense limit in effect at the time of the waiver or reimbursement, as applicable, or (2) the expense limit in effect at the time of recoupment.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Entity Registrant Name	dei_EntityRegistrantName	GABELLI NEXTSHARES TRUST
Entity Central Index Key	dei_EntityCentralIndexKey	0001637520
Document Creation Date	dei_DocumentCreationDate	Jun. 18, 2018
Document Effective Date	dei_DocumentEffectiveDate	Jun. 18, 2018
Prospectus Date	rr_ProspectusDate	Jun. 18, 2018