• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
FinanceSouth Korea
Asia

Activist retail investors take on Korea’s corporate laggards

By
Shery Ahn
Shery Ahn
and
Bloomberg
Bloomberg
Down Arrow Button Icon
By
Shery Ahn
Shery Ahn
and
Bloomberg
Bloomberg
Down Arrow Button Icon
June 9, 2025, 3:48 AM ET
Lee Jae-myung, the left-leaning politician who won the country’s presidential election last week, tried to position himself as a champion for shareholders.
Lee Jae-myung, the left-leaning politician who won the country’s presidential election last week, tried to position himself as a champion for shareholders.Jeon Heon-Kyun—Pool/Getty Images

South Korea’s small investors are trying to shake up the country’s creaky corporate landscape.

Recommended Video

Amateur stock-pickers across the country are gathering on social media platform KakaoTalk and dedicated shareholder apps such as Act, which has racked up more than 110,000 users in the two years since it launched. Their aim: to give a jolt to Korea’s $1.9 trillion stock market, which has for years traded at cheaper multiples than regional rivals like Japan and Taiwan.

“Korea’s financial system lags global standards and companies need to be held accountable,” said Younghee Won, a 66-year-old art instructor and amateur investor. “Online platforms allow our anger to translate into action.”

This wave of grass-roots activism means Korea’s listed companies are now being pressured from all sides, as politicians, regulators and foreign investment funds push for better governance. That may finally force local companies to address the long-standing “Korea discount”—adding fuel to a stock market that is already one of the world’s best performers so far this year.

It has also turned small investors into a surprising political force. Lee Jae-myung, the left-leaning politician who won the country’s presidential election last week, tried to position himself as a champion for shareholders, promising to lift corporate governance standards, curb stock manipulation and set the Kospi index on the path to 5,000—almost 80% higher than its current level.

The Kospi entered a bull market after Lee’s election win and was around 1.7% higher in early Asian trading on Monday. 

The market is getting a boost from foreign funds loading up on stocks, and rising optimism from Wall Street. Goldman Sachs Group Inc. strategists said in a weekend note they were upgrading Korean stocks to overweight from neutral, pointing to the increased likelihood of capital market reforms.

Growing clout

Retail investors in Korea now represent almost 30% of the overall population, according to Goldman Sachs. A boom in stock trading during the COVID-19 pandemic led to millions of new account openings, fueling the rise of online communities where they could learn about stock picking—and hatch plans. 

Shareholders of Korean companies filed 168 proposals in the most recent round of annual general meetings, a jump of more than 80% from 2021, according to figures from the AJU Research Institute of Corporate Management. That included 78 proposals directly targeting management, calling for the appointment or removal of executives.

“Minority shareholders are seeking a more active role in corporate governance,” said Nameun Kim, deputy director at the AJU. “If previously the focus was solely on returns, now they want their preferred directors on the board so they can participate in management decisions.”

So far, small investors’ successes have come at small companies, those with a market value of $1 billion or less. During the recent round of annual general meetings in March, medical company Oscotec Inc. scrapped plans to reappoint its chief executive after pushback from investors, while biotechnology firm Amicogen Inc and textile company DI Dong Il Corp. appointed new auditors after small investors pushed for it.

Oscotec, Amicogen and DI Dong Il Corp. didn’t respond to requests for comment. 

Unsurprisingly, many companies do their best to resist—or simply ignore—these mini activists. Kim, a schoolteacher who asked to be identified only by his surname, became so frustrated with one Korean company whose stock he holds that he sent 400 letters to fellow investors he found in the company’s shareholder registry, asking them to join him in a KakaoTalk group to discuss possible action. More than 120 of them signed up.

“I had to print and mail each one by hand,” he said. “I did it all on my own, outside of work hours, while maintaining a full-time job. Shareholder activism is exhausting, frustrating and frankly overwhelming.”

The company didn’t respond to Kim’s numerous requests for clarity on their business performance, and he ended up selling most of his stake. He held on to a few shares out of a sense of obligation to his fellow activists.

The rise of small investors in Korea differs from the meme-stock mania in the U.S., where anonymous users on Reddit’s WallStreetBets forum banded together to drive up the price of GameStop Corp. and other shares. Korean platforms such as Act and Hey Holder require users to confirm they actually hold shares before they can join any dedicated group, meaning those weighing into discussions already have skin in the game.

Act’s CEO Sangmok Lee said that users on his platform often act more like “fans” of the companies they hold. “Fans engage in shareholder activism out of love for the company, much like how parents use discipline out of love,” Lee said.

Powerful allies

Korea’s stock market has for years been cheaper than close rivals Japan and Taiwan when it comes to metrics such as the price-to-book ratio, a popular measure of how much a stock is worth compared to the value of a company’s assets. The “Korea discount” doesn’t have a single cause but analysts point to worries about how companies invest, a convoluted series of cross shareholdings and a sense that the interests of company executives aren’t always in line with their shareholders.

Small investors won’t be enough on their own to turn things around, but they have some powerful allies. Local activist funds like Align Partners Capital Management Inc. are on the rise, adding professional savvy to the efforts of amateur investors. Foreign funds are also getting in on the act, expanding their operations in Korea in the hopes that the market is finally ready to turn a corner. 

“We’re optimistic that the presidential elections will bring even more substantial changes in South Korea,” said Seth Fischer, founder and chief investment officer of activist fund Oasis Management in a recent Bloomberg Television interview. He added a note of caution, saying there was still a “long, long way to go” in reforming Korea’s corporate sector.

But small investors’ greatest source of support may come from the very top. In a Facebook post before his election win, Lee Jae-myung promised to protect investors’ interests, promote transparency and push companies to appoint directors representing minority shareholders. 

His goal? Turning the “Korea discount” into a “Korea premium.”

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Authors
By Shery Ahn
See full bioRight Arrow Button Icon
By Bloomberg
See full bioRight Arrow Button Icon

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.


Latest in Finance

gen z
CommentaryCareers
The entry-level job market is the worst it’s been in 37 years. Stop blaming Gen Z
By Janelle Jones and Nia LawMarch 21, 2026
11 minutes ago
A woman looks frustrated a computer
AIWomen
Women are avoiding the very technology that threatens them most, as expert warns of a ‘two-tiered AI economy’ approaching
By Jacqueline MunisMarch 21, 2026
28 minutes ago
AIFinance
Why Block’s COO is tracking ‘gross profit per employee’—and how AI is on track to double it to $2 million
By Sheryl EstradaMarch 21, 2026
41 minutes ago
ILLUSTRATION - 17 February 2026, Bavaria, Munich: A beverage can with a soft drink and numerous sugar cubes lie on a table. Photo: Sven Hoppe/dpa (Photo by Sven Hoppe/picture alliance via Getty Images)
EnergyIran
Iran war is making the world a little less sweet as oil soars at the worst possible time for sugar
By Eva RoytburgMarch 21, 2026
1 hour ago
home for sale
AIChatGPT
A man let ChatGPT sell his home. It beat every agent’s estimate by $100K—and closed in 5 days
By Jake AngeloMarch 21, 2026
2 hours ago
US President Donald Trump, left, and Marco Rubio, US secretary of state, speak to members of the media on the South Lawn of the White House before boarding Marine One in Washington, DC, US, on Friday, March 20, 2026. US officials said the White House is sending more than 2,000 additional Marines to the Middle East as it weighs a plan to seize Iran's Kharg Island oil export hub, a ground operation that would carry huge risks for President Donald Trump.
EnergyIran
Three weeks into the Iran war that’s requested $200 billion, here’s what success for Trump might look like
By Jordan BlumMarch 21, 2026
2 hours ago