Frank Nez 
South Korea’s aggressive stance on short selling, particularly its stringent regulations and temporary bans, has positioned the country as a global leader in combating illegal market practices.
With a ban on covered short sales extended until March 30, 2025, and new reforms targeting naked short selling, South Korea’s Financial Services Commission (FSC) is reshaping its capital markets to prioritize fairness for retail investors.
This approach has resonated strongly with retail investors in the United States, who, inspired by the 2021 meme stock frenzy, have increasingly called for similar protections against market manipulation by hedge funds and institutional players.
This article explores South Korea’s short-selling regulations, their impact on global markets, and why U.S. retail investors are urging regulators to adopt equally robust measures.
South Korea’s Short-Selling Ban: A Response to Market Manipulation
The Evolution of the Ban
South Korea’s journey with short-selling restrictions began during the 2008 global financial crisis and was reinforced during the COVID-19 pandemic.
The most recent ban, implemented on November 6, 2023, was a direct response to widespread naked short-selling violations by global investment banks.
Naked short selling—selling shares without borrowing them or ensuring they can be borrowed—is illegal in South Korea and has been blamed for undermining fair price formation in its capital markets.
The FSC extended the ban until March 30, 2025, to allow time for systemic reforms, including the development of a Naked Short-Selling Detecting System (NSDS) by the Korea Exchange (KRX).
The FSC’s measures are not merely temporary.
In April 2025, South Korea introduced legislation allowing up to a five-year ban on illegal short selling, with penalties including fines up to 100% of illicit profits and criminal sanctions for profits exceeding KRW 5 billion ($3.4 million).
These reforms aim to deter market manipulators and level the playing field between institutional and retail investors.
Key Reforms and Enforcement
South Korea’s short-selling reforms are multifaceted, focusing on prevention, detection, and punishment:
- Internal Control Standards: All institutional and corporate investors must establish electronic systems to manage stock balances in real-time, preventing naked short sales. These systems require pre-trade checks and comprehensive monitoring.
- Central Monitoring System (NSDS): The KRX’s NSDS will cross-check institutional investors’ stock balances and over-the-counter transactions to detect naked short sales within three days.
- Standardized Borrowing Terms: To address disparities, the FSC has standardized stock borrowing terms, limiting repayment periods to 12 months for both institutional and retail investors.
- Heightened Penalties: Since the 2021 amendment to the Financial Investment Services and Capital Markets Act (FSCMA), illegal short selling can result in criminal penalties, with fines and potential imprisonment for significant violations.
The Financial Supervisory Service (FSS) has also intensified investigations, uncovering KRW 211.2 billion ($210 million) in illegal short trades by nine global investment banks since May 2021.
Banks like BNP Paribas, HSBC, and Credit Suisse have faced fines, with some cases referred to prosecutors.
Impact on the Korean Market
The short-selling ban has had mixed effects.
The KOSPI index surged 4.4% on November 6, 2023, following the ban’s announcement, reflecting retail investor enthusiasm.
However, the prolonged restriction has raised concerns about reduced market liquidity and foreign investor participation.
Experts warn that the ban may deter hedge funds employing long-short strategies, potentially impacting South Korea’s bid for a Morgan Stanley Capital International (MSCI) developed-market status upgrade, per FT.
Despite these challenges, FSC Chairman Kim Byoung-hwan has emphasized that the reforms aim to create a transparent market, encouraging foreign investment once short selling resumes.
Analysts from Goldman Sachs and Macquarie predict that the resumption of short selling in March 2025 will boost market efficiency and attract foreign investors, who account for 70% of short-selling activity in Korea.
U.S. Retail Investors Champion South Korea’s Approach
The Meme Stock Frenzy of 2021
In January 2021, the U.S. stock market witnessed an unprecedented event: the meme stock frenzy, driven by retail investors coordinating on platforms like Reddit’s r/WallStreetBets.
Stocks like GameStop (GME) and AMC Entertainment (AMC) soared as retail investors executed a short squeeze against hedge funds that had heavily shorted these companies.
Institutional short sellers, expecting stock prices to plummet, were caught off guard as retail-driven buying pushed GameStop’s stock from $17 to a peak of $483.
However, the frenzy exposed vulnerabilities in the U.S. regulatory framework. Some hedge funds, including Citadel, were accused of exploiting market mechanics to mitigate losses.
By overleveraging short positions and benefiting from trading halts triggered by extreme volatility, these funds reportedly covered or re-shorted stocks at lower prices during the descent, avoiding catastrophic losses.
Citadel, a major market maker, faced scrutiny for its role in executing trades for retail brokers like Robinhood, which restricted buying during the frenzy, fueling allegations of market manipulation.
The episode highlighted the power imbalance between retail investors and institutional players.
Calls for Stringent Regulations
South Korea’s proactive measures against short selling have struck a chord with U.S. retail investors, who view the country’s regulations as a blueprint for curbing market manipulation.
On social media platforms and forums, retail investors have praised South Korea’s focus on protecting retail participants and punishing illegal practices.
They argue that the U.S. Securities and Exchange Commission (SEC) has been too lenient with hedge funds and market makers, allowing practices like naked short selling and high-frequency trading to distort market dynamics.
Retail investor advocacy groups, inspired by South Korea’s NSDS and criminal penalties, have urged the SEC to implement similar reforms, including:
- Real-Time Short Position Monitoring: A centralized system to detect naked short selling, akin to South Korea’s NSDS.
- Harsher Penalties: Criminal sanctions and profit disgorgement for illegal short selling, mirroring South Korea’s FSCMA amendments.
- Equal Access to Short Selling: Standardized borrowing terms to enable retail investors to participate in short selling, addressing the institutional dominance seen in the U.S. market.
- Transparency in Market Maker Activity: Greater oversight of firms like Citadel, which play dual roles as hedge funds and market makers, to prevent conflicts of interest.
These demands gained traction in 2022 when the SEC proposed rules to enhance short-selling transparency, including daily reporting of short positions.
However, retail investors remain frustrated by the slow pace of reform and the lack of aggressive enforcement compared to South Korea’s model.
The Global Implications of South Korea’s Short-Selling Ban
South Korea’s short-selling ban and reforms have sparked debate about their long-term impact.
Proponents argue that the measures protect retail investors and deter predatory practices, fostering trust in the market.
Critics, including global investment banks, contend that the ban distorts price discovery and reduces market efficiency, potentially driving foreign capital to other markets.
The Financial Times reported that some banks view the ban as a “phantom farce” designed to appease retail voters ahead of South Korea’s 2024 parliamentary elections.
The ban’s impact on foreign investment is evident. In August and early September 2024, foreign investors withdrew KRW 4.76 trillion ($3.55 billion) from the KOSPI, reflecting concerns about market restrictions.
However, the FSC remains optimistic, citing foreign investors’ understanding of the need for a transparent market.
The planned resumption of short selling in March 2025, coupled with robust detection systems, is expected to restore confidence.
Also Read: A Congresswoman Now Introduces Bill To End FINRA
Lessons for the United States
The U.S. can draw valuable lessons from South Korea’s approach.
The meme stock frenzy underscored the need for stronger protections against market manipulation, particularly for retail investors who now account for a significant portion of trading volume.
South Korea’s emphasis on real-time monitoring, standardized access, and severe penalties offers a framework for addressing these issues.
By adopting similar measures, the SEC could enhance market fairness and rebuild trust among retail investors, who feel disadvantaged by institutional dominance.
Also Read: Goldman Sachs: Hedge Funds Now On Alert For Short Squeezes from Retail Investors
The Role of Hedge Funds and Market Makers
Hedge funds like Citadel have faced criticism for their outsized influence in U.S. markets.
During the meme stock frenzy, Citadel’s dual role as a hedge fund and market maker raised concerns about potential conflicts of interest.
Retail investors argue that such firms can manipulate order flows and exploit trading halts to their advantage, a practice South Korea’s reforms aim to curb through centralized monitoring and compliance requirements.
The U.S. could benefit from similar oversight to ensure market makers operate transparently.
Related: FSC Now Freezes Accounts Suspected of Illegal Trading
Why this matters
South Korea’s ban on short selling and its comprehensive reforms represent a bold effort to protect retail investors and combat market manipulation.
By prioritizing fairness and transparency, the FSC has set a global standard that resonates with retail investors worldwide, particularly in the United States.
The 2021 meme stock frenzy exposed the vulnerabilities of the U.S. market, where hedge funds like Citadel allegedly navigated losses through strategic maneuvering.
Inspired by South Korea’s stringent regulations, U.S. retail investors are advocating for real-time monitoring, harsher penalties, and equal access to short selling.
South Korea’s reforms offer a roadmap for other nations seeking to balance market efficiency with investor protection.
The global financial community will be watching closely to see if the U.S. follows suit.
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Also Read: Investors now urge President Trump to investigate naked short selling in formal letter
About The Author
Financial Desk Team 
