
Short selling is a controversial but legal practice in Australia, where traders borrow shares and sell them, aiming to buy them back at a lower price to make a profit. However, naked short selling, where traders sell shares they have not borrowed, is illegal in Australia and many other countries due to its potential for market manipulation and distortion of supply and demand. In Australia, the Australian Securities and Investments Commission (ASIC) regulates short selling and has taken action against companies like Macquarie Group for misreporting short sales.
| Characteristics | Values |
|---|---|
| Is short selling illegal in Australia? | Short selling is legal and regulated in Australia, but naked short selling is illegal. |
| Regulatory body | Australian Securities and Investments Commission (ASIC) |
| Regulatory actions | ASIC requires position disclosure and can restrict short selling during extreme volatility. |
| Regulatory objectives | ASIC aims to prevent manipulation, maintain stability, and protect investors across global markets. |
| Examples of regulatory actions | ASIC has taken enforcement actions against Macquarie Group for allegedly misreporting up to 1.5 billion short sales over a decade and a half. |
| Penalties for non-compliance | ASIC has imposed fines on Macquarie Group for inaccuracies in short sale reports, with a maximum possible penalty of A$782.5 million. |
| International cases | Australian hedge fund Regal Funds Management Pty Ltd and a former employee were indicted by South Korean regulators for alleged violations of short-selling regulations. |
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What You'll Learn

Naked short selling is illegal in Australia
Short selling is a legal and regulated practice in Australia. However, a type of short selling called naked short selling is illegal. Naked short selling involves selling shares without borrowing them first or ensuring that they can be borrowed. In other words, it is the sale of shares that the trader does not own and has not secured the right to borrow.
Naked short selling is considered illegal and unethical due to several reasons. Firstly, it can lead to market manipulation by artificially depressing stock prices. This can be done by selling non-existent shares and driving down particular share prices. Secondly, it affects transparency and increases the potential for fraud. By selling shares that are not secured, naked short selling can distort the supply and demand dynamics of the market, making trading in certain securities unfair and untrustworthy. Lastly, it poses a financial risk to retail investors as it creates a dangerous environment where share prices can be manipulated and investors can face unlimited losses.
Regulatory bodies like the SEC in the US have implemented rules such as Regulation SHO to curb naked short selling. Despite these regulations, naked short selling continues to occur due to regulatory loopholes and enforcement challenges. Whistleblower programs have been established to encourage individuals to report abusive naked short selling practices and protect the integrity of the market.
In summary, naked short selling is illegal in Australia due to its potential for market manipulation, distortion of supply and demand, and the financial risks it poses to investors. Regulatory bodies and whistleblower programs aim to address these issues and ensure the stability and transparency of the market.
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ASIC can restrict short selling during extreme volatility
In Australia, the regulatory body ASIC (Australian Securities and Investments Commission) requires position disclosure and can restrict short selling during extreme volatility. Short selling is a strategy that lets traders profit when stock prices fall. It involves selling high first and then buying low to complete the trade.
ASIC's mandate is to prevent manipulation, maintain stability, and protect investors across global markets. In September 2008, ASIC took steps to temporarily restrict covered short selling in the Australian market and to implement an interim reporting system for permitted short sales. This was done in response to the severe stress global financial markets were experiencing at the time. There was widespread concern that short selling was contributing to market volatility and putting enough pressure on market confidence to be systematically relevant to the global financial system and economy.
ASIC introduced the ban on short selling to maintain an orderly market and mitigate the risk of market abuse. The ban was also intended to enhance confidence and integrity in the market by providing greater transparency and to avoid potential extreme share price movements in the local market. The Australian government and ASIC would likely contemplate a ban on short selling again in the future if a similar situation involving disorderly markets and action by regulators in other jurisdictions were to occur.
ASIC's short selling disclosure regime will continue to provide detailed and timely information about short selling in the markets, which will inform any future decisions about the need for a covered short selling ban in periods of market turmoil. It is important to note that there is a type of short selling that is deemed illegal in Australia: naked short selling. Naked short selling involves selling shares that haven't been borrowed yet, which can cause a supply shortage of shorted securities and potentially impact market prices. It is considered unethical due to its potential to manipulate stock prices and is largely banned in other jurisdictions like the US and the EU.
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Short selling is a risky strategy
Another risk of short selling is that it can lead to market manipulation and distort supply and demand. Naked short selling, in particular, involves selling shares that haven't been borrowed, which can create an artificial supply of "phantom shares" and distort stock prices. This practice is considered unethical and is illegal in many jurisdictions, including the US and the EU.
In Australia, the Australian Securities and Investments Commission (ASIC) regulates short selling and has taken action against companies for inaccurately reporting short sales. ASIC requires position disclosure and can restrict short selling during extreme volatility to prevent manipulation and protect investors. While short selling is legal in Australia, naked short selling is deemed illegal due to the risks and ethical concerns associated with it.
Overall, short selling is a risky strategy that can lead to significant losses and market instability. It is important for investors to carefully consider the risks and seek appropriate financial advice before engaging in short selling.
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Short selling is a controversial practice
Short selling is legal and regulated in Australia, but a specific type of short selling, known as naked short selling, is illegal. Naked short selling involves selling shares that haven't been borrowed, with the promise to deliver them later. This practice can lead to market manipulation, impact market transparency, and increase the risk of fraud. It can also create an artificial supply of shares, distorting stock prices and destabilizing the market.
In Australia, the Australian Securities and Investments Commission (ASIC) regulates short selling and aims to prevent manipulation, maintain market stability, and protect investors. ASIC requires position disclosure and can restrict short selling during periods of extreme market volatility. Despite these regulations, concerns have been raised about the potential for social trading and "copy trading" on low-cost trading platforms to manipulate stock prices, which is illegal in Australia.
The practice of short selling has also led to legal disputes in Australia. In 2025, Australia's corporate regulator sued Macquarie Group, alleging that the company misreported up to 1.5 billion short sales over a decade and a half, violating rules implemented after the financial crisis. This case highlights the ongoing efforts of Australian regulators to ensure transparency and compliance in short-selling activities.
Additionally, an Australian hedge fund, Regal Funds Management Pty Ltd, was indicted by South Korean regulators for alleged violations of short-selling regulations. This incident demonstrates the global reach of short-selling practices and the potential legal consequences for non-compliance with relevant regulations.
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Macquarie Group was accused of misreporting short sales
Short selling is a legal and regulated trading strategy in Australia. However, there is a type of short selling called naked short selling, which is illegal. Naked short selling involves selling shares that haven't been borrowed, creating a risky environment for investors and potentially impacting market prices.
In May 2025, Australia's corporate regulator, the Australian Securities and Investments Commission (ASIC), sued Macquarie Group, alleging that it misreported up to 1.5 billion short sales over 14 years, between December 2009 and February 2024. Macquarie Securities Australia, the brokerage arm of Macquarie Group, was accused of misreporting on behalf of both clients and the bank itself. The misreporting related to at least 321 unique securities, with Macquarie inflating or cutting the overall published volume of short sales by an average of 12%, and in some cases by more than 50%.
ASIC claimed that Macquarie's actions were misleading and violated the rules introduced after the Global Financial Crisis to improve transparency in the market. Market participants rely on short sale data to assess sentiment and risks associated with a stock, and ASIC's lawsuit was described as "timely given significant recent global market volatility".
Macquarie stated that it had fixed the software problems since reporting them to ASIC and that it was reviewing the regulator's claim. The bank emphasised its commitment to compliance and its ongoing investment in improving systems and controls across the Group. The lawsuit is part of a broader probe by Australian regulators into the country's banks, following a 2019 royal commission that criticised industry watchdogs for being too cooperative with the sector.
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Frequently asked questions
Short selling is not illegal in Australia. However, naked short selling, a practice where traders sell assets without first borrowing them, is deemed illegal.
Short selling is a strategy that lets traders profit when stock prices fall. It involves selling high first, then buying low to complete the trade.
Naked short selling involves selling shares that haven't been borrowed yet. It is considered illegal and high-risk due to its potential for market manipulation and the distortion of supply and demand dynamics.
Naked short selling is illegal because it can artificially depress stock prices, leading to market manipulation. It can also create an artificial supply that distorts stock prices and destabilizes the market.
Naked short selling carries significant financial risks, such as "failure to deliver" if the shares cannot be secured at a lower price. It also increases the risk of unlimited losses and contributes to market volatility.











































