South Korea's Financial Supervisory Service and the ETF Dilemma: Can Responsibility Shifting Bridge the Information Gap?

Background

In July 2026, Lee Chan-jin, governor of South Korea's Financial Supervisory Service, met with senior executives from 20 asset management companies, calling for stronger management responsibility over ETF products. The regulator's concerns focused on three areas:

1. Advertising accuracy: Ensuring investment information is truthful and complete 2. Tracking error monitoring: Attention to the deviation between ETF net value and underlying index performance 3. Company information alignment: Strengthening information synchronization with investee companies

Behind this call lies an implicit question: Why doesn't the regulator directly restrict ETF products instead of demanding that asset managers strengthen their "responsibility"?

Core Observation

The rapid expansion of ETFs reflects a widespread phenomenon: financial democratization. What once only institutional investors could hold—complex investment portfolios—now retail investors can buy for a few hundred dollars: a fund covering 500 global companies in a single purchase.

Yet this democratization process creates a paradox—

Products grow increasingly complex, while investors' ability to understand them does not keep pace.

ETFs appear simple ("buy a basket of stocks"), but their internal complexity has far exceeded retail investor comprehension: - Index construction logic (market-cap weighting vs. equal weighting vs. factor weighting) - Sources of tracking error (transaction costs, dividend reinvestment timing gaps, securities lending fees) - Daily rebalancing mechanisms in leveraged ETFs (intra-day volatility magnified into long-term losses) - Inverse ETFs used for "hedging" but actually destroyed by time decay

When regulators call for "ensuring information accuracy," they essentially ask asset managers to translate complex principles into plain language. But this creates an information paradox:

If the explanation is too detailed, retail investors become more confused (adding decision barriers); if oversimplified too much, it becomes misleading.

Root of the Problem: Information Asymmetry Cannot Be Fully Eliminated

Economist George Akerlof introduced the "Lemons Market" concept in 1970—when buyers cannot determine product quality, markets experience adverse selection (high-quality goods exit, low-quality goods proliferate).

The ETF market now faces a similar dilemma:

Asset managers know: - This ETF will underperform the index by 3% this year, possibly catching up next year - Leveraged ETFs fail during high-volatility periods - Certain small-cap ETFs have such low trading volume they cannot track precisely

But retail investors don't know (even with complete disclosure documents): - Why these things happen - Whether what they bought is a "lemon"

The regulator's approach: require sellers to disclose more information.

But Akerlof's model tells us—no matter how complete information disclosure is, if buyers lack the capacity to interpret it, information asymmetry persists.

Three Regulatory Options and Their Limitations

Option A: Ban complex products - Cost: Stifles financial innovation, reduces democratization of investment opportunities - Political cost: Industry backlash, accusations of protecting established interests

Option B: Mandatory transparency (South Korea's current path) - Assumption: More information = better decisions - Reality: Investors with sufficient information but insufficient understanding make worse decisions (overconfidence bias amplifies) - Cost: Regulators struggle to measure effectiveness, but responsibility is formally satisfied (regulatory capture risk)

Option C: Establish access thresholds (risk-level certification) - Method: Retail investors must pass ETF knowledge tests before buying leveraged/inverse/complex ETFs - Problem: Infringes on investment freedom, and tests themselves may become mere formality

Historical Parallel: The Leverage Financing Episode

Before the 2008 financial crisis, retail investors could buy homes with 50:1 leverage. Regulators said: "The problem isn't the leverage tool itself, but insufficient information disclosure and risk awareness."

What happened? No matter how detailed information disclosure was, it couldn't overcome greed and cognitive limitations.

Post-crisis, regulation shifted toward limiting leverage multiples (tool-level restrictions) rather than just strengthening information requirements.

The ETF market is now taking the "information transparency route"—but if history repeats itself, when leveraged ETFs/inverse ETFs cause retail losses in the next bear market, South Korea's regulators will discover:

Responsibility shifting (demanding asset managers take charge) cannot solve what is fundamentally an education gap.

Deeper Issues

Lee Chan-jin's call for "tracking error monitoring" reflects an implicit assumption:

*Retail investors buy ETFs because they want to "precisely replicate an index."*

But in reality, many retail investors buy ETFs because: - "It's simpler than individual stocks" (cognitively) - "The name sounds stable" (psychologically) - "Everyone else is buying it" (social influence)

None of these motivations involve tracking error. So even if asset managers perfectly control tracking error, it won't change these investors' decision logic.

This is why "strengthening responsibility" sounds like action but has limited real effect.

Conclusion: The Boundaries of Responsibility

What regulators are essentially doing is shifting responsibility—transferring risk accountability from "government ensures market safety" to "asset managers ensure information accuracy."

This works for low-complexity products (like stock market disclosure rules).

But as product complexity rises exponentially, this shift reaches a critical point—no matter how detailed the information, it cannot close the understanding gap between retail investors and professionals.

The ETF market will likely evolve through: 1. Short-term: Continue strengthening information requirements (appears to be acting, limited real effect) 2. Mid-term: A complex ETF causes major retail losses, triggering public outcry 3. Long-term: Policy shifts toward restricting high-complexity product sales to certain populations or raising access thresholds

South Korea's Financial Supervisory Service's call is not wrong, but it answers "how to do it" rather than "what can change"—the latter is the harder question.