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SSGA Active Trust

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SPDR® SSGA US Equity Premium Income ETF

Objective, Primary [Text Block]

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The SPDR SSGA US Equity Premium Income ETF (the “Fund”) seeks to provide current income while maintaining prospects for long term growth of capital.

Expense Narrative [Text Block]

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The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund (“Fund Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.

Portfolio Turnover [Heading]

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Portfolio Turnover:

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

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

Expense Example Narrative [Text Block]

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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 indicated, and then sell or hold all of your Fund 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 would be:

Strategy Narrative [Text Block]

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SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests, under normal circumstances, 80% of the Fund's net assets (plus any borrowings for investment purposes) in a combination of equity securities of U.S. companies and investments that produce premium income. The Fund considers a company to be a U.S. company if it (i) generates at least 50% of its revenues or profits from business activities in the U.S., (ii) has at least 50% of its assets situated in the U.S., or (iii) has the principal trading market for its securities in the U.S. At times, the Fund's investments may be focused in one or more market sectors. As of the date of this prospectus, a significant portion of the Fund comprised securities of companies in the technology sector, although this may change from time to time. The Fund will provide shareholders with at least sixty (60) days' notice prior to any change in its 80% investment policy.The Fund seeks to achieve its investment objective by (1) creating an actively managed portfolio of equity securities that primarily include common stocks of large and medium capitalization U.S. companies and (2) selling call options (a type of derivative instrument) to generate additional income, including call options on a U.S. large capitalization equity index, such as the S&P 500 Index, and call options on exchange-traded funds that seek to track a U.S. large capitalization equity index. Futures contracts (another type of derivative instrument) may also be used by the Fund for investment purposes and in managing cash flows.When creating the Fund's portfolio of equity securities, the Adviser utilizes fundamental company research, involving analysis of financial statements and other information about a company. The Adviser primarily seeks to identify securities of large and medium sized companies (companies with market capitalizations of $2 billion or more) that the Adviser believes have desirable characteristics for the Fund, such as:•low valuations in relation to their peers, the market, their historical valuations, or their growth rate potential;•appropriate capital structures, including appropriate levels of debt and financial leverage under the circumstances; and/or•high quality management focused on generating shareholder value.The Adviser may consider selling a security when one of these characteristics no longer applies, when the Adviser believes the valuation has become excessive, or when more attractive alternatives are identified.With respect to the call option portion of the strategy, the Fund will systematically sell (write) call option contracts that have an expiration date of less than one year (typically, approximately one month), with an objective of generating incremental income. Listed options or Flexible Exchange Options (“FLEX Options”) may be utilized. FLEX Options are customizable exchange-traded option contracts guaranteed for settlement by the Options Clearing Corporation (the “OCC”). Option terms that can be customized include exercise price, exercise styles, and expiration dates. When the Fund sells a call option, the purchaser pays the Fund a premium in exchange for the right to purchase the asset underlying the option at a specified price (the “strike price”) within a specified time period or at a specified future date. The Fund assumes the risk of an increase in the market price of the underlying asset above the strike price of the option.The Fund seeks to optimize the return from its use of call options by setting strike prices based on the Adviser's view of the current levels of market risk. The Adviser assesses market risk utilizing a proprietary investor risk aversion signal that considers factors including, but not limited to, implied market volatility, risk asset demand and the spread between positive and negative market sentiment. The Fund seeks to sell options with a strike price close or equal to the value of the asset underlying the option in higher market risk environments and seeks to sell options with a strike price further above the current value of the asset underlying the option in lower market risk environments.The Adviser will seek to “ladder” the Fund's written call option positions. “Laddering” is an investment technique that utilizes multiple option positions over multiple expiration dates to reduce the risk of a concentrated exposure to a single option expiration and to create more opportunities to roll option positions (i.e., one option position expires and a new option position is opened in the same underlying security) during extended periods of market appreciation. In this regard, the Adviser expects to write frequent, short-dated call options with one-month expirations in tranches, with such expirations being staggered approximately once every week. As an option on an underlying asset held by the Fund nears expiration, they are generally closed out and replaced by another option with a later expiration (commonly referred to as “rolling the option”).

Bar Chart and Performance Table [Heading]

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Fund Performance

Performance One Year or Less [Text]

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The Fund had not commenced operations as of the date of this Prospectus.

Performance Availability Website Address [Text]

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https://www.ssga.com/spdrs

Risk Return Abstract

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Risk [Text Block]

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As with all investments, there are certain risks of investing in the Fund. Fund Shares will change in value, and you could lose money by investing in the Fund.

Risk Return Abstract

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Risk [Text Block]

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Market Risk: The Fund's investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, or other events could have a significant impact on the Fund and its investments.

Risk Return Abstract

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Risk [Text Block]

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Large-Capitalization Securities Risk: Returns on investments in securities of large companies could trail the returns on investments in securities of smaller and mid-sized companies. Larger companies may be unable to respond as quickly as smaller and mid-sized companies to competitive challenges or to changes in business, product, financial, or other market conditions. Larger companies may not be able to maintain growth at the high rates that may be achieved by well-managed smaller and mid-sized companies.

Risk Return Abstract

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Risk [Text Block]

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Call Writing Strategy Risk: The Fund's use of call options involves speculation and can lead to losses because of adverse movements in the price or value of the underlying stock, index, or other asset, which may be magnified by certain features of the options. The Fund's successful use of call options depends on the ability of the Adviser to forecast market movements correctly. For example, if the Fund were to write (sell) a call option on an index or security based on the Adviser's expectation that the price of an index or security would fall, but the price were to rise instead, the Fund could be required to sell the underlying asset upon exercise at a price below the current market price. When selling a call option, the Fund will receive a premium; however, this premium may not be enough to offset a loss incurred by the Fund if the price of the underlying asset is above the strike price by an amount equal to or greater than the premium. The value of an option may be adversely affected if the market for the option becomes less liquid or smaller, and will be affected by changes in the value or yield of the option's underlying asset, an increase in interest rates, a change in the actual or perceived volatility of the stock market or the underlying asset and the remaining time to expiration. Additionally, the value of an option does not increase or decrease at the same rate as the underlying asset(s). In addition, if the price of the underlying asset of an option is above the strike price of a written call, the value of the option, and consequently of the Fund, may decline significantly more than if the Fund invested directly in the underlying asset instead of using options. The Fund could experience a loss if its options do not perform as anticipated, or are not correlated with the performance of their underlying asset or if the Fund is unable to purchase or liquidate a position because of an illiquid secondary market. As an option on an underlying asset held by the Fund nears expiration, they are generally closed out and replaced by another option with a later expiration (commonly referred to as “rolling the option”). There is no assurance that the Fund will be able to roll the option or effect a different closing transaction at any particular time or at an acceptable price. The sale of call options by the Fund may create investment leverage. Frequent selling of call options may result in higher Fund expenses and may result in increased taxable distributions to investors, including potentially increased distributions that are taxable to individuals as ordinary income.

Risk Return Abstract

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Risk [Text Block]

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Fluctuation of Net Asset Value, Share Premiums and Discounts Risk: As with all exchange-traded funds, Fund Shares may be bought and sold in the secondary market at market prices. The trading prices of Fund Shares in the secondary market may differ from the Fund's daily net asset value per share and there may be times when the market price of the shares is more than the net asset value per share (premium) or less than the net asset value per share (discount). This risk is heightened in times of market volatility or periods of steep market declines.

Risk Return Abstract

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Risk [Text Block]

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Management Risk: The Fund is actively managed. The Adviser's judgments about the attractiveness, relative value, or potential appreciation of a particular sector, security, commodity or investment strategy may prove to be incorrect, and may cause the Fund to incur losses. There can be no assurance that the Adviser's investment techniques and decisions will produce the desired results.

Risk Return Abstract

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Risk [Text Block]

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New Fund Risk: The Fund is new and there is no assurance that the Fund will grow quickly. When the Fund's size is small, the Fund may experience low trading volume, which could lead to wider bid/ask spreads. In addition, the Fund may face the risk of being delisted if the Fund does not meet certain conditions of the listing exchange. Any resulting liquidation of the Fund could cause elevated transaction costs for the Fund and negative tax consequences for its shareholders.

Risk Return Abstract

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Risk [Text Block]

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Technology Sector Risk: Market or economic factors impacting technology companies and companies that rely heavily on technological advances could have a major effect on the value of the Fund's investments. The value of stocks of technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability. Additionally, companies in the technology sector may face dramatic and often unpredictable changes in growth rates and competition for the services of qualified personnel.

Risk Return Abstract

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Distribution and service (12b-1) fees

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none

Year 3

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$ 80