What is ASM

What is ASM

by Tanushree Jaiswal Last Updated: Sep 07, 2023 - 05:01 pm 3k Views


The full form of ASM is "Additional Surveillance Measure" in the stock market. ASM is a regulatory mechanism implemented by stock exchanges to monitor and regulate the trading activities of certain securities closely. It is designed to enhance market integrity, mitigate risks, and protect investors' interests.

Under the ASM framework, stock exchanges identify specific securities based on predefined criteria such as price volatility, trading volumes, and market capitalization. These securities are then subjected to additional surveillance measures, which include enhanced monitoring, stricter margin requirements, and increased disclosure obligations.

ASM aims to maintain market stability by detecting and preventing potential manipulative activities, price distortions, or excessive speculation in identified securities. By imposing stricter regulations, ASM helps in curbing excessive price movements and reducing risks associated with certain stocks.

Investors should be aware of the ASM status of stock before making investment decisions. It is essential to stay informed about any changes or updates in the ASM framework as it can significantly impact trading activities and investment strategies.

What is ASM Meaning in the Stock Market?

ASM (Additional Surveillance Measures) refers to a stock market regulation system that carefully monitors and regulates the trading activity of particular securities. It is intended to improve market integrity, limit risks, and protect investors' interests.

Stock exchanges use ASM to identify certain stocks based on predetermined parameters such as price volatility, trade volumes, and market capitalization. These designated securities are subject to heightened scrutiny, including more excellent monitoring, stricter margin requirements, and increased disclosure duties.

ASM's primary goal is to preserve market stability by identifying and blocking suspected manipulative acts, pricing distortions, or excessive speculation in the recognized assets. ASM helps to limit extreme price swings and decreases the risks linked with specific stocks by enforcing more robust controls.

Before making an investment choice, investors should consider a stock's ASM status. It is critical to be informed of any modifications or upgrades to the ASM framework since they may substantially influence trading activity and investing strategies. Staying updated about ASM may help investors make more educated decisions and manage their portfolios more successfully.

Applicability of Long-term ASM

The applicability of long-term ASM (Additional Surveillance Measure) can be understood through the following pointers:

Securities Selection: Long-term ASM applies to specific securities that meet predetermined criteria set by the stock exchanges. These criteria may include factors such as price volatility, trading volumes, and market capitalization. Securities that exhibit higher volatility or are prone to manipulation are typically selected for long-term ASM.

Extended Monitoring Period: Unlike short-term ASM, which is imposed for a limited period, long-term ASM applies for an extended duration. It is a continuous surveillance measure that remains in effect until the stock exchange decides to lift or modify it based on the securities' performance and market conditions.

Stricter Regulations: Long-term ASM imposes stricter regulations on the identified securities. This may include higher margin requirements, increased disclosure obligations, and limitations on trading activities. The aim is to ensure a more controlled and stable trading environment for these securities.

Market Integrity: The primary objective of long-term ASM is to enhance market integrity. Subjecting specific securities to rigorous monitoring and regulations helps in preventing potential manipulative activities, price distortions, and excessive speculation. This safeguards the overall integrity of the stock market and instils investor confidence.

Risk Mitigation: Long-term ASM serves as a risk mitigation measure for both investors and the market as a whole. Imposing stricter regulations helps in curbing excessive price movements and reducing risks associated with the identified securities. This is especially important in highly volatile or sensitive market conditions.

Investor Awareness: It is crucial for investors to be aware of the long-term ASM status of a stock before making investment decisions. Being informed about the securities under long-term ASM allows investors to assess the potential risks and adjust their investment strategies accordingly. Investors should regularly check for any updates or changes in the long-term ASM framework.

Market Impact: Long-term ASM can have a significant impact on the trading activities of the identified securities. The stricter regulations and enhanced monitoring may affect liquidity, trading volumes, and price movements. Investors need to factor in these effects while evaluating the market dynamics and making investment choices.

Regular Review: Long-term ASM is subject to periodic review by the stock exchanges. The performance and behavior of the identified securities are assessed to determine whether the long-term ASM needs to be continued, modified, or lifted. Investors should stay updated with the review outcomes to stay informed about any changes in the regulatory status.

Different Types of ASM List

What is an ASM list in the stock market? There are different types of ASM (Additional Surveillance Measures) implemented in the stock market to regulate and monitor specific securities. Some of the common types include:

Price Bands: This type of ASM involves placing price limits on securities, restricting their price movements within a specified range. It helps prevent excessive volatility and sudden price fluctuations.

Increased Margin Requirements: Under this ASM, higher margin requirements are imposed on certain securities. It ensures that investors have a greater financial stake in their trades, reducing the risk of speculative activities and price manipulation.

Graded Surveillance Measure (GSM): GSM is a type of ASM that categorizes securities based on their risk profile. Different levels of surveillance measures are applied based on the risk category assigned to each security. It helps in targeted monitoring and regulation.

Additional Disclosure Obligations: Some securities under ASM may be required to provide additional information and disclosures to the stock exchanges and investors. This ensures transparency and improves the flow of information in the market.

Trading Restrictions: ASM can also involve restrictions on trading activities of specific securities, such as limitations on intraday trading, short-selling, or imposing a minimum holding period. These restrictions aim to prevent excessive speculation and maintain market stability.

Enhanced Monitoring: Under this type of ASM, securities are subjected to intensified monitoring by the stock exchanges. It involves close scrutiny of trading volumes, order flows, and other market-related data to detect any suspicious or manipulative activities.

ASM Stages

ASM Stages


Stage 1

Initial identification of securities that meet predefined criteria.

Stage 2

Imposition of surveillance measures such as price bands, increased margin requirements, or additional disclosures.

Stage 3

Ongoing monitoring and review of the identified securities.

Stage 4

Potential modifications or lifting of ASM based on the securities' performance and market conditions.

Stage 5

Continuous monitoring and adjustments as necessary to maintain market stability and investor protection.

Significance of ASM-Listed Stocks

What is ASM in the stock market, ASM (Additional Surveillance Measure) listed stocks hold significance in the stock market due to the enhanced regulatory scrutiny and monitoring they undergo. The inclusion of a stock in the ASM list indicates that it meets certain predefined criteria, such as high volatility or susceptibility to manipulation. This listing serves as a cautionary signal to investors, alerting them to the potential risks associated with those stocks. Investors need to exercise extra caution and perform thorough analysis before investing in ASM-listed stocks. The ASM designation aims to protect investors by implementing stricter regulations and surveillance, ensuring market integrity, and minimizing the potential for price manipulation and speculative activities.

List of ASM Stocks


ASM Stage

CMP (Rs.)

Market Cap (Rs. Crs)

YTD (%)

Ambuja Cements Ltd.

I – Short Term




Adani Power

IV- Long Term




Weizmann Ltd.

I – Short Term




Fineotex Chemical Ltd.

I – LongTerm




Jindal Worldwide

III- Long Term




Overview of ASM Listed Stocks

Following is the overview of the ASM-listed stocks:

Ambuja Cements Ltd. 

Ambuja Cements LTD is one of India's leading cement makers, with a global presence in 80 countries. The firm, founded in 1993, primarily concentrates on cement, aggregate, and concrete.

Adani Power Limited (APL)

Adani Power, which went public in 2009, is India's biggest private thermal power generator, having units in Gujarat, Karnataka, Maharashtra, Rajasthan, and Chhattisgarh. In addition, it has a 40 MW solar power facility in Gujarat. 


Weizmann Ltd, the prominent firm of the Weizmann Group, began its operations in Textile Processing and Exports, Fin-Tech, and Renewable Energy. The corporation eventually diversified into various other businesses.

Fineotex Chemical

Fineotex Chemical Limited was established in 1979. The company's central line of business is the production of auxiliaries and speciality chemicals for the textile, construction, water treatment, fertilizer, leather, and paint industries.

Jindal Worldwide

The firm, founded in 1961, is one of the foremost textile producers. The company has also expanded into chemicals, financial services, and trade.

What Should an Investor Do if They Find Their Stocks in the ASM List?

If an investor finds their stocks in the ASM (Additional Surveillance Measure) list, they should conduct thorough research on the reasons for the listing. It is essential to assess the potential risks associated with the stocks, stay updated on any regulatory changes, and adjust their investment strategies accordingly.


ASM (Additional Surveillance Measures) plays a crucial role in regulating and monitoring specific securities in the stock market. ASM helps enhance market integrity, mitigate risks, and protect investors' interests. Investors should stay informed about ASM listings, conduct thorough research, and adjust their investment strategies accordingly to make informed decisions.

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About the Author

Tanushree is a seasoned professional with 6 years of experience in the Fintech and Edtech industry.


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