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Performance Management - No Load Class Prospectus
Apr. 30, 2026
Kinetics Internet Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block] The bar chart and table shown below illustrate the variability of the Internet Fund’s returns. The bar chart indicates the risks of investing in the Internet Fund by showing the changes in the Internet Fund’s performance from year to year (on a calendar year basis). The table shows how the Internet Fund’s average annual returns, before and after taxes, compare with those of the S&P 500® Index and the NASDAQ Composite® Index, which represent broad measures of market performance. The past performance of the Internet Fund, before and after taxes, is not necessarily an indication of how the Internet Fund or the Internet Portfolio will perform in the future. Updated performance information is available on the Fund’s website at http://www.kineticsfunds.com or by calling the Fund toll-free at (800) 930-3828.
Performance Past Does Not Indicate Future [Text] The past performance of the Internet Fund, before and after taxes, is not necessarily an indication of how the Internet Fund or the Internet Portfolio will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table shown below illustrate the variability of the Internet Fund’s returns.
Performance Additional Market Index [Text] . The table shows how the Internet Fund’s average annual returns, before and after taxes, compare with those of the S&P 500® Index and the NASDAQ Composite® Index, which represent broad measures of market performance.
Bar Chart [Heading] The Internet Fund – No Load ClassCalendar Year Returns as of 12/31
Bar Chart Closing [Text Block]
Best Quarter:Q4 202051.80 %
Worst Quarter:Q2 2022-25.13 %
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 51.80%
Highest Quarterly Return, Date Dec. 31, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (25.13%)
Lowest Quarterly Return, Date Jun. 30, 2022
Performance Table Heading Average Annual Total Returns as of 12/31/2025
Performance Table Narrative
The Internet Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment. The Return After Taxes on Distributions and Sale of Fund Shares is higher than other return figures when a capital loss occurs upon the redemption of Fund shares.
Performance Table Uses Highest Federal Rate The Internet Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Performance Table Explanation after Tax Higher The Return After Taxes on Distributions and Sale of Fund Shares is higher than other return figures when a capital loss occurs upon the redemption of Fund shares.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deductions for fees, expenses or taxes)
Performance Availability Website Address [Text] http://www.kineticsfunds.com
Performance Availability Phone [Text] (800) 930-3828
Kinetics Global Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block] The bar chart and table shown below illustrate the variability of the Global Fund’s returns. The bar chart indicates the risks of investing in the Global Fund by showing the changes in the Global Fund’s performance from year to year (on a calendar year basis). The table shows how the Global Fund’s average annual returns, before and after taxes, compare with those of the S&P® 500 Index and the MSCI ACWI (All Country World Index) Index (“MSCI ACWI Index”), which represent broad measures of market performance. As of March 14, 2008, the Global Fund and the Global Portfolio, which were formerly known as the Internet Emerging Growth Fund and the Internet Emerging Growth Portfolio, respectively, changed to the investment strategy set forth in this Prospectus. The performance shown for the periods or portion of periods prior to March 14, 2008 represents performance of the Global Portfolio’s prior strategy to invest at least 80% of its net assets plus any borrowings for investment purposes in equity securities of small and medium-capitalization U.S. and foreign companies engaged in the Internet and Internet-related activities. The past performance of the Global Fund, before and after taxes, is not necessarily an indication of how the Global Fund or the Global Portfolio will perform in the future. Performance reflects fee waivers in effect. If fee waivers were not in place, the Global Fund’s performance would be reduced. Updated performance information is available on the Fund’s website at http://www.kineticsfunds.com or by calling the Fund toll-free at (800) 930-3828.
Performance Past Does Not Indicate Future [Text] The past performance of the Global Fund, before and after taxes, is not necessarily an indication of how the Global Fund or the Global Portfolio will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table shown below illustrate the variability of the Global Fund’s returns.
Performance Additional Market Index [Text] The table shows how the Global Fund’s average annual returns, before and after taxes, compare with those of the S&P® 500 Index and the MSCI ACWI (All Country World Index) Index (“MSCI ACWI Index”), which represent broad measures of market performance.
Bar Chart [Heading] The Global Fund – No Load ClassCalendar Year Returns as of 12/31
Bar Chart Closing [Text Block]
Best Quarter:Q4 202030.71 %
Worst Quarter:Q4 2018-18.32 %
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 30.71%
Highest Quarterly Return, Date Dec. 31, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (18.32%)
Lowest Quarterly Return, Date Dec. 31, 2018
Performance Table Heading Average Annual Total Returns as of 12/31/2025
Performance Table Narrative
The Global Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment. The Return After Taxes on Distributions and Sale of Fund Shares is higher than other return figures when a capital loss occurs upon the redemption of Fund shares.
Performance Table Uses Highest Federal Rate The Global Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Performance Table Explanation after Tax Higher The Return After Taxes on Distributions and Sale of Fund Shares is higher than other return figures when a capital loss occurs upon the redemption of Fund shares.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deductions for fees, expenses or taxes)
Performance Availability Website Address [Text] http://www.kineticsfunds.com
Performance Availability Phone [Text] (800) 930-3828
Kinetics Paradigm Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]
The bar chart and table shown below illustrate the variability of the Paradigm Fund’s returns. The bar chart indicates the risks of investing in the Paradigm Fund by showing the changes in the Paradigm Fund’s performance from year to year (on a calendar year basis). The table shows how the Paradigm Fund’s average annual returns, before and after taxes, compare with those of the S&P 500® Index and the MSCI ACWI (All Country World Index) Index (“MSCI ACWI Index”), which represent broad measures of market performance. The past performance of the Paradigm Fund, before and after taxes, is not necessarily an indication of how the Paradigm Fund or the Paradigm Portfolio will perform in the future. Performance reflects fee waivers in effect. If fee waivers were not in effect, the Paradigm Fund’s
performance would be reduced. Updated performance information is available on the Fund’s website at http://www.kineticsfunds.com or by calling the Fund toll-free at (800) 930-3828.
Performance Past Does Not Indicate Future [Text] The past performance of the Paradigm Fund, before and after taxes, is not necessarily an indication of how the Paradigm Fund or the Paradigm Portfolio will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table shown below illustrate the variability of the Paradigm Fund’s returns.
Performance Additional Market Index [Text] The table shows how the Paradigm Fund’s average annual returns, before and after taxes, compare with those of the S&P 500® Index and the MSCI ACWI (All Country World Index) Index (“MSCI ACWI Index”), which represent broad measures of market performance.
Bar Chart [Heading] The Paradigm Fund – No Load ClassCalendar Year Returns as of 12/31
Bar Chart Closing [Text Block]
Best Quarter:Q1 202154.40 %
Worst Quarter:Q1 2020-32.22 %
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 54.40%
Highest Quarterly Return, Date Mar. 31, 2021
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (32.22%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns as of 12/31/2025
Performance Table Narrative The Paradigm Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Performance Table Uses Highest Federal Rate The Paradigm Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deductions for fees, expenses or taxes)
Performance Availability Website Address [Text] http://www.kineticsfunds.com
Performance Availability Phone [Text] (800) 930-3828
Kinetics Small Cap Opportunities Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block] The bar chart and table shown below illustrate the variability of the Small Cap Fund’s returns. The bar chart indicates the risks of investing in the Small Cap Fund by showing the changes in the Small Cap Fund’s performance from year to year (on a calendar year basis). The table shows how the Small Cap Fund’s average annual returns, before and after taxes, (after taking into account any sales charges) compare with those of the S&P 500® Index, which represents a broad measure of market performance as well as the MSCI USA Small Cap Index, which replaces the S&P 600® SmallCap Index as the secondary comparison benchmark. The past performance of the Small Cap Fund, before and after taxes, is not necessarily an indication of how the Small Cap Fund or the Small Cap Portfolio will perform in the future. Performance reflects fee waivers in effect. If fee waivers were not in place, the Small Cap Fund’s performance would be reduced. Updated performance information is available on the Fund’s website at http://www.kineticsfunds.com or by calling the Fund toll-free at (800) 930-3828.
Performance Past Does Not Indicate Future [Text] The past performance of the Small Cap Fund, before and after taxes, is not necessarily an indication of how the Small Cap Fund or the Small Cap Portfolio will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table shown below illustrate the variability of the Small Cap Fund’s returns.
Performance Additional Market Index [Text] The table shows how the Small Cap Fund’s average annual returns, before and after taxes, (after taking into account any sales charges) compare with those of the S&P 500® Index, which represents a broad measure of market performance as well as the MSCI USA Small Cap Index, which replaces the S&P 600® SmallCap Index as the secondary comparison benchmark.
Bar Chart [Heading] The Small Cap Fund – No Load ClassCalendar Year Returns as of 12/31
Bar Chart Closing [Text Block]
Best Quarter:Q1 202160.47 %
Worst Quarter:Q1 2020-34.39 %
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 60.47%
Highest Quarterly Return, Date Mar. 31, 2021
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (34.39%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns as of 12/31/2025
Performance Table Narrative The Small Cap Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Performance Table Market Index Changed Effective April 30, 2026, the secondary broad-based index used for comparison with the Small Cap Fund’s performance changed from the S&P 600 SmallCap Index TR to the MSCI USA Small Cap Index, which more closely reflects the types of securities in which the Fund invests.
Performance Table Uses Highest Federal Rate The Small Cap Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deductions for fees, expenses or taxes)
Performance Availability Website Address [Text] http://www.kineticsfunds.com
Performance Availability Phone [Text] (800) 930-3828
Kinetics Market Opportunities Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block] The bar chart and table shown below illustrate the variability of the Market Opportunities Fund’s returns. The bar chart indicates the risks of investing in the Market Opportunities Fund by showing the changes in the Market Opportunities Fund’s performance from year to year (on a calendar year basis). The table shows how the Market Opportunities Fund’s average annual returns, before and after taxes (after taking into account any sales charges) compare with those of the S&P 500® Index, which represents a broad measure of market performance, as well as the MSCI EAFE Index, which is a secondary comparison benchmark. The past performance of the Market Opportunities Fund, before and after taxes, is not necessarily an indication of how the Market Opportunities Fund or the Market Opportunities Portfolio will perform in the future. Performance reflects fee waivers in effect. If fee waivers were not in place, the Market Opportunities Fund’s performance would be reduced. Updated performance information is available on the Fund’s website at http://www.kineticsfunds.com or by calling the Fund toll-free at (800) 930-3828.
Performance Past Does Not Indicate Future [Text] The past performance of the Market Opportunities Fund, before and after taxes, is not necessarily an indication of how the Market Opportunities Fund or the Market Opportunities Portfolio will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table shown below illustrate the variability of the Market Opportunities Fund’s returns.
Performance Additional Market Index [Text] The table shows how the Market Opportunities Fund’s average annual returns, before and after taxes (after taking into account any sales charges) compare with those of the S&P 500® Index, which represents a broad measure of market performance, as well as the MSCI EAFE Index, which is a secondary comparison benchmark.
Bar Chart [Heading] The Market Opportunities Fund – No Load ClassCalendar Year Returns as of 12/31
Bar Chart Closing [Text Block]
Best Quarter:Q1 202145.93 %
Worst Quarter:Q1 2020-21.60 %
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 45.93%
Highest Quarterly Return, Date Mar. 31, 2021
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (21.60%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns as of 12/31/2025
Performance Table Narrative The Market Opportunities Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Performance Table Uses Highest Federal Rate The Market Opportunities Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deductions for fees, expenses or taxes)
Performance Availability Website Address [Text] http://www.kineticsfunds.com
Performance Availability Phone [Text] (800) 930-3828
Kinetics Multi-Disciplinary Income Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block] The bar chart and table shown below illustrate the variability of the Multi-Disciplinary Income Fund’s returns. The bar chart indicates the risks of investing in the Multi-Disciplinary Income Fund by showing the changes in the Multi-Disciplinary Income Fund’s performance from year to year (on a calendar year basis). The table shows how the Multi-Disciplinary Income Fund’s average annual returns, before and after taxes (after taking into account any sales charges) compare with those of the Bloomberg U.S. Aggregate Bond Index, which represents a broad measure of market performance, as well as the Bloomberg U.S. Corporate High Yield Bond Index, CBOE S&P 500 BuyWrite Monthly Index, and CBOE S&P 500 PutWrite Index (PUT), which are secondary comparison benchmarks. The past performance of the Multi-Disciplinary Income Fund, before and after taxes, is not necessarily an indication of how the Multi-Disciplinary Income Fund or the Multi-Disciplinary Income Portfolio will perform in the future. Performance reflects fee waivers in effect. If fee waivers were not in place, the Multi-Disciplinary Income Fund’s performance would be reduced. Updated performance information is available on the Fund’s website at http://www.kineticsfunds.com or by calling the Fund toll-free at (800) 930-3828.
Performance Past Does Not Indicate Future [Text] The past performance of the Multi-Disciplinary Income Fund, before and after taxes, is not necessarily an indication of how the Multi-Disciplinary Income Fund or the Multi-Disciplinary Income Portfolio will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and table shown below illustrate the variability of the Multi-Disciplinary Income Fund’s returns.
Performance Additional Market Index [Text] The table shows how the Multi-Disciplinary Income Fund’s average annual returns, before and after taxes (after taking into account any sales charges) compare with those of the Bloomberg U.S. Aggregate Bond Index, which represents a broad measure of market performance, as well as the Bloomberg U.S. Corporate High Yield Bond Index, CBOE S&P 500 BuyWrite Monthly Index, and CBOE S&P 500 PutWrite Index (PUT), which are secondary comparison benchmarks.
Bar Chart [Heading] The Multi-Disciplinary Income Fund – No Load ClassCalendar Year Returns as of 12/31
Bar Chart Closing [Text Block]
Best Quarter:Q2 20206.64 %
Worst Quarter:Q1 2020-10.52 %
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 6.64%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (10.52%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns as of 12/31/2025
Performance Table Narrative
The Multi-Disciplinary Income Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment. The Return After Taxes on Distributions and Sale of Fund Shares is higher than other return figures when a capital loss occurs upon the redemption of Fund shares.
Performance Table Uses Highest Federal Rate The Multi-Disciplinary Income Fund’s after-tax returns as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Performance Table Explanation after Tax Higher The Return After Taxes on Distributions and Sale of Fund Shares is higher than other return figures when a capital loss occurs upon the redemption of Fund shares.
Performance Table Footnotes In some cases, the Return After Taxes on Distributions and Sale of Fund Shares may exceed the Return After Taxes on Distributions or Return Before Taxes due to an assumed benefit from any losses on a sale of Fund shares at the end of the measurement period.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deductions for fees, expenses or taxes)
Performance Availability Website Address [Text] http://www.kineticsfunds.com
Performance Availability Phone [Text] (800) 930-3828