Summary Prospectus by Investment Company (Form 497K)

 

February 27, 2026	Class	Ticker Symbol
	Z	AAIZX

Before you invest, you may want to review the Fund's Prospectus, which contains more information about the Fund and its risks. You can find the Fund's Prospectus, reports to shareholders, and other information about the Fund online at https://www.alger.com/fundliterature. You can also get this information at no cost by calling (800) 992-3863 or by sending an e-mail request to [email protected]. The Fund's Prospectus and Statement of Additional Information, both dated February 27, 2026, are incorporated by reference to this Summary Prospectus, and may be obtained at no cost in the same manner as described above.

Investment Objective

Alger AI Enablers & Adopters Fund seeks long-term capital appreciation.

Fund Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and examples below.

Shareholder Fees
(fees paid directly from your investment) 

	Class Z
	None

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

	Class Z
Advisory Fees	0.45 %
Distribution and/or Service (12b-1) Fees	None
Other Expenses	1.97 %
Total Annual Fund Operating Expenses	2.42 %
Fee Waiver and/or Expense Reimbursement*	(1.81) %
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.61 %

Example

The following 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 indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The example also assumes that the contractual fee waiver and/or expense reimbursement is only in effect through October 31, 2027. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 

	1 Year	3 Years	5 Years	10 Years
Class Z	$62	$457	$1,009	$2,518

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 173.58% of the average value of its portfolio.

Principal Investment Strategy

The Manager believes companies undergoing Positive Dynamic Change offer the best opportunities and demonstrate promising growth potential. Positive Dynamic Change refers to companies realizing High Unit Volume Growth or companies undergoing Positive Lifecycle Change. High Unit Volume Growth companies are traditional growth companies experiencing, for example, rapidly growing demand or market dominance. Positive Lifecycle Change companies are, for example, companies benefitting from new regulations, a new product innovation or new management.

Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in equity securities of companies of any market capitalization that it believes will benefit from artificial intelligence ("AI"), demonstrate promising growth potential, and are companies where AI can play a material role in potentially driving stock price performance over the next twelve to thirty-six months. Equity securities include common or preferred stocks listed on U.S. or foreign exchanges.

In effecting the Fund's investment strategy, the Manager initially employs its fundamental, proprietary investment research investment process to identify companies undergoing Positive Dynamic Change.

Next, the Manager determines whether it believes such companies benefit from AI by classifying them into two categories: AI Enablers and AI Adopters. AI Enablers include companies developing the building block components for and investing in AI infrastructure such as machinery, hardware, software and services. AI Adopters include companies that integrate AI into their businesses to enhance their products or services or make their operations more productive. These categories may be adjusted from time to time to incorporate future developments as the area of AI evolves.

Lastly, the Manager determines whether AI can play a material role in potentially driving stock performance over the next twelve to thirty-six months through its fundamental research process. The Manager makes this determination using mainly qualitative assessments to reach its conclusions due to the Manager's view that publicly traded companies, even those focused upon AI, are not universally transparent in sharing their exposure to AI. Specifically, the Manager makes assessments based upon its knowledge of each company's creation, distribution and/or consumption of AI products and services, and to the extent available, upon quantitative factors including but not limited to a company's revenue derived from, and/or resources devoted to, AI. In assessing what material role AI may play in potentially driving stock performance over the next twelve to thirty-six months, the Manager considers from among the following criteria with respect to AI Enablers, estimates of a company's future market share in AI-related infrastructure services, product and/or service quality, acceleration of revenue growth and rate of adoption relative to peers, and, with respect to AI Adopters, estimates of the degree of AI integration into a company's operations, the resulting impact on reducing a company's costs, the increase in efficiency of the company's operations, the potential enhancement to a company's net earnings and revenue growth, improvement of product or service offerings, and the extent to which a company may gain a potential competitive advantage from AI within its industry.

The Fund will invest at least 25% of its total assets in companies focused in the following group of related industries: software, technology hardware storage and peripherals, semiconductors and semiconductor equipment, information technology services, electronic equipment instruments and components, communications equipment, broadline retail and interactive media and services, as classified by third party sources. From time to time, the Fund may have 25% or more of its total assets invested in any one of these industries.

The Fund may invest a substantial portion of its assets in a smaller number of issuers. As a result, the Fund is a non-diversified investment company, which means the performance results of any one position may have a greater impact on the Fund's performance.

The Fund's investments include small-, medium- and large-capitalization companies. The Fund may invest in foreign securities listed on foreign exchanges as well as American Depositary Receipts ("ADRs") and Global Depositary Receipts ("GDRs").

The Fund may sell a stock when it reaches a target price, it fails to perform as expected, or other opportunities appear more attractive. As a result, the Fund may engage in active trading of portfolio securities.

The Fund may invest a significant portion of its assets in securities of companies conducting business within a single sector as defined by third party sources, including, but not limited to, the information technology, consumer discretionary and

communication services sectors. For the purpose of categorizing companies, sectors are a broader category than industries and industries comprise sectors.

The Fund can also invest in privately placed securities, which are securities acquired in non-public offerings for which there is no readily available market.

The Fund may invest in cash (and cash equivalents) when the Fund is unable to find enough attractive long-term investments to meet its investment objective, to meet redemptions and/or when the Manager believes it is advisable to do so during times of short-term market volatility. During these times, cash (and cash equivalents) will not exceed 15% of the Fund's net assets.

Principal Risks

An investment in the Fund involves risks. The Fund's share price may go down, which means you could lose money. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The following is a summary description of principal risks involved in investing in the Fund.

Investment Risk - An investment in the Fund is subject to investment risk, including the possible loss of the entire principal amount that you invest.

Market Risk - Your investment in Fund shares represents an indirect investment in the securities owned by the Fund. The value of these securities, like other investments, may move up or down, sometimes rapidly and unpredictably. Your Fund shares at any point in time may be worth less than what you invested, even after taking into account the reinvestment of Fund dividends and distributions. Local, regional or global events such as environmental or natural disasters, war, terrorism, pandemics, outbreaks of infectious diseases, and similar public health threats, trade disputes and changes in trade regulations, civil unrest, recessions, or other events could have a significant impact on the Fund and its investments.

Equity Securities Risk - As with any fund that invests in stocks, your investment will fluctuate in value, and the loss of your investment is a risk of investing. The Fund's price per share will fluctuate due to changes in the market prices of its investments. Also, the Fund's investments may not grow as fast as the rate of inflation and stocks tend to be more volatile than some other investments you could make, such as bonds.

Artificial Intelligence Securities Risk - Companies involved in, or exposed to, AI-related businesses may have limited product lines, markets, financial resources or personnel. These companies face intense competition and potentially rapid product obsolescence, and many depend significantly on retaining and growing the consumer base of their respective products and services. Many of these companies are also reliant on the end-user demand of products and services in various industries that may in part utilize AI. Further, many companies involved in, or exposed to, AI-related businesses may be substantially exposed to the market and business risks of other industries or sectors, and the Fund may be adversely affected by negative developments impacting those companies, industries or sectors. In addition, these companies are heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. There can be no assurance that companies involved in AI will be able to successfully protect their intellectual property to prevent the misappropriation of their technology, or that competitors will not develop technology that is substantially similar or superior to such companies' technology.

Companies that utilize AI in their business operations, and the challenges with properly managing AI's use could result in reputational harm, competitive harm, and legal liability, and/or an adverse effect on such companies' business operations. If the content, analyses, or recommendations that AI applications assist companies in producing are or are alleged to be deficient, inaccurate, or biased, the Fund may be adversely affected. Additionally, AI tools used by such companies may produce inaccurate, misleading or incomplete responses that could lead to errors in decision-making or other business activities, which could have a negative impact on the performance of such companies. Such AI tools could also be used against companies in criminal or negligent ways.

AI technology could face increasing regulatory scrutiny in the future, which may limit the development of this technology and impede the growth of companies that develop and/or utilize this technology. Similarly, the collection of data from consumers and other sources could face increased scrutiny as regulators consider how the data is collected, stored, safeguarded and used. AI companies may face regulatory fines and penalties, including potential forced break-ups, that could hinder the ability of the companies to operate on an ongoing basis. Country, government, and/or region-specific regulations or restrictions could have an impact on AI and big data companies.

AI companies typically engage in significant amounts of spending on research and development, and there is no guarantee that the products or services produced by these companies will be successful. AI companies, especially smaller companies, tend to be more volatile than companies that do not rely heavily on technology.

Growth Securities Risk - Prices of growth stocks tend to be higher in relation to their companies' earnings and may be more sensitive to market, political and economic developments than other stocks, making their prices more volatile. An investment in the Fund may be better suited to investors who seek long-term capital growth and can tolerate fluctuations in their investment's value.

Concentration Risk - By focusing on an industry or a group of industries, the Fund carries much greater risks of adverse developments and price movements in such industries than a fund that invests in a wider variety of industries. Because the Fund concentrates in a specific industry or group of industries, there is also the risk that the Fund will perform poorly during a slump in demand for securities of companies in such industries.

Mid Cap Securities Risk - There may be greater risk in investing in medium-capitalization companies rather than larger, more established companies due to such factors as inexperienced management and limited product lines or financial resources. It may also be difficult or impossible to liquidate a security position at a time and price acceptable to the Fund because of the potentially less frequent trading of stocks of smaller market capitalization. Often, medium capitalization companies and the industries in which they focus are still evolving and, as a result, they may be more sensitive to changing market conditions.

Small Cap Securities Risk - There may be greater risk in investing in companies with small market capitalizations rather than larger, more established companies owing to such factors as more limited product lines or financial resources or lack of management depth. It may also be difficult or impossible to liquidate a security position at a time and price acceptable to the Fund because of the potentially less frequent trading of stocks of smaller market capitalization.

Sector Risk - The Fund may have a significant portion of its assets invested in securities of companies conducting business within a single sector, as defined by third party sources. Companies in the same sector may be similarly affected by economic, regulatory, political or market events or conditions, which may make the Fund more vulnerable to unfavorable developments in that sector than a fund that has a more diversified portfolio. Generally, the more broadly the Fund invests, the more it spreads risk and potentially reduces the risks of loss and volatility.

Non-Diversification Risk - The Fund is a non-diversified investment company. Therefore, the Fund's performance may be more vulnerable to changes in the market value of a single issuer and more susceptible to risks associated with a single economic, political, or regulatory occurrence than a fund that has a diversified portfolio.

Privately Placed Securities Risk - A private placement is an offering of a company's securities that is not registered with the Securities and Exchange Commission (the "SEC") and is not offered to the public. The issuers of privately placed securities are not typically subject to the same oversight and regulatory requirements, including disclosure and other investor protection requirements, to which public issuers are subject, and there may be very little public information available about the issuers and their performance. The sale or transfer of privately placed securities may be limited or prohibited by contract or law and such investments are generally considered to be illiquid. Privately placed securities are generally fair valued as they are not traded

frequently. The Fund may be required to hold such positions for several years, if not longer, regardless of valuation, which may cause the Fund to be less liquid. As a result, investments in private placements can result in substantial or complete losses.

Foreign Securities Risk - The Fund's performance will be influenced by political, social and economic factors affecting investments in foreign companies. Special risks associated with investments in foreign companies include exposure to currency fluctuations, lack of liquidity, potential for market manipulation, less developed or less efficient trading markets, limited access to reliable capital, lack of comprehensive company information, political instability, differing audit, regulatory, and legal standards and lack of financial reporting standards. Additionally, events and evolving conditions in certain markets or regions may alter the risk profile of investments tied to those markets or regions. This may cause investments tied to such markets or regions to become riskier or more volatile, even when investments in such markets or regions were perceived as comparatively stable historically. In addition, foreign companies with securities listed on U.S. exchanges may be delisted if they do not meet U.S. accounting standards and auditor oversight requirements, which may decrease the liquidity and value of the securities.

ADR and GDR Risk - ADRs and GDRs may be subject to some of the same risks as direct investment in foreign companies, which includes international trade, currency, political, regulatory and diplomatic risks. In a sponsored ADR arrangement, the foreign issuer assumes the obligation to pay some or all of the depository's transaction fees. Unsponsored ADRs and GDRs are organized independently and without the cooperation of the foreign issuer of the underlying securities, and involve additional risks because U.S. reporting requirements do not apply. In addition, the issuing bank may deduct shareholder distribution, custody, foreign currency exchange, and other fees from the payment of dividends. GDRs can involve additional currency risk since, unlike ADRs, they may not be U.S. Dollar-denominated.

Affiliate Ownership Risk - Certain shareholders, including other funds advised by the Manager or an affiliate of the Manager, may from time to time own a substantial amount of the shares of the Fund. In addition, a third party investor, the Manager or an affiliate of the Manager, or another entity may invest in the Fund and hold its investment for a limited period of time solely to facilitate commencement of the Fund or to facilitate the Fund's achieving a specified size or scale. There can be no assurance that any large shareholder would not redeem its investment or that the size of the Fund would be maintained at such levels. Accordingly, the Fund can be subject to the potential for large scale inflows and outflows as a result of purchases and redemptions made by large shareholders. Redemptions by large shareholders could have a significant negative impact on the Fund. Inflows and outflows could be significant, could cause the Fund to sell securities at inopportune times in order to meet redemption requests, and could cause the Fund's portfolio turnover rate and transaction costs to rise, which may negatively affect the Fund's performance and have adverse tax consequences for Fund shareholders.

Portfolio Turnover (Active Trading) Risk - Because the Fund may engage in active trading of portfolio securities, it may incur increased transaction costs and brokerage commissions, both of which can lower the actual return on an investment. Active trading may also increase short-term gains and losses, which may affect the taxes a shareholder has to pay.

Cash Position Risk - At times, the Fund may hold up to 15% of its net assets in cash (and cash equivalents), which may underperform relative to equity securities.

Performance

The following bar chart and the table beneath it provide some indication of the risks of investing in the Fund by showing the Fund's performance for the calendar year ended December 31, 2025. The bar chart shows how the Fund's average annual returns have varied over the indicated periods. The table shows how the Fund's average annual returns compare with those of an appropriate broad-based securities market index that represents the overall domestic equity market. The Fund's past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated performance information is available on the Fund's website www.alger.com.

Annual Total Return for Class Z Shares as of December 31 (%)

  

Best Quarter:

Q2 2025

34.39%

Worst Quarter:

Q1 2025

-12.44%

Average Annual Total Return as of December 31, 2025 

	1 Year	Since Inception	Inception Date
Class Z			4/4/2024
Return Before Taxes	41.25%	43.61%
Return After Taxes on Distributions	37.93%	40.99%
Return After Taxes on Distributions and Sale of Fund Shares	24.56%	33.04%
S&P 500 Index (reflects no deductions for fees, expenses or taxes)	17.88%	19.32%

In the foregoing table, after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The after-tax returns shown may not be relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Management 

Investment Manager	Portfolio Manager Primarily Responsible for Day-to-Day Management of the Fund
Fred Alger Management, LLC	Patrick Kelly, CFA Executive Vice President, Head of Alger Capital Appreciation and Spectra Strategies and Portfolio Manager Since Inception (April 2024)

Shareholder Information

Purchasing and Redeeming Fund Shares

The Fund's Class Z Shares are generally subject to a minimum initial investment of $500,000, which may be waived in certain circumstances.

Investors may purchase or redeem Fund shares on any business day through a financial intermediary, which may include an investor's selected broker-dealer, investment adviser, or other financial institution or professional, or directly with the Fund's transfer agent.

Tax Information

The Fund's distributions may be taxable as ordinary income or capital gains. The Fund is actively managed, and as a result, investors may receive capital gains distributions annually.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and/or the Manager or the Fund's distributor may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your financial professional to recommend the Fund over another investment. Ask your financial professional or visit your financial intermediary's website for more information.