[Korean Stock Deep Analysis] Surpassing Hyundai to KOSPI Top 3: The 10% Fund Rule and NAV Value-Up Strategy Behind SK Square's 111T KRW Surge

A Historic Reshuffling of the Market

In a historic market shift during late April 2026, South Korea's equity landscape witnessed a monumental structural change. SK Square, an investment holding company, officially surpassed traditional manufacturing stalwarts such as Hyundai Motor and LG Energy Solution to capture the title of the third-largest company by market capitalization on the KOSPI index. Reaching a staggering valuation of over 111 trillion KRW, SK Square has firmly positioned itself right behind the semiconductor behemoths Samsung Electronics and SK Hynix. Just a month ago, the holding company was ranked seventh with a market cap of approximately 61 trillion KRW. However, a relentless 80% surge in its stock price—peaking at an intraday 52-week high of 877,000 KRW—has entirely redrawn the leaderboards. Market experts widely analyze this explosive growth not as a fleeting speculative trend, but as the inevitable mathematical result of profound supply-demand imbalances and a fundamental re-evaluation of corporate governance.

The KOSPI 6,700 Era and the Semiconductor Supercycle

The broader macroeconomic context surrounding this surge is nothing short of extraordinary. Driven by a relentless artificial intelligence (AI) fueled semiconductor supercycle, the Korean equity market is experiencing an unprecedented bull run. This momentum propelled the benchmark KOSPI index to breach the historic 6,700-point mark during intraday trading. At the core of this historic rally is SK Hynix, which has secured absolute dominance in the global High Bandwidth Memory (HBM) supply chain amid surging datacenter investments from global tech giants. SK Hynix's stellar earnings growth has catapulted its own stock price past the 1.3 million KRW threshold.

This concentration of capital has created an extreme market polarization. Currently, the "Semiconductor Quartet"—comprising Samsung Electronics (common and preferred shares), SK Hynix, and SK Square—commands a combined market capitalization of 2,444 trillion KRW, accounting for a massive 45.1% of the entire KOSPI. Amid this overwhelming liquidity flow into the tech sector, SK Square has emerged as the most potent leveraged play on the market.

Core Catalyst 1: The Paradox of the 10% Fund Rule

The most powerful technical catalyst driving SK Square's valuation past the 111 trillion KRW milestone is a mechanical constraint known as the "10% rule" mandated by South Korea's Capital Markets Act. By law, actively managed mutual funds and national pension funds face a strict regulatory cap, preventing them from allocating more than 10% of their total portfolio into any single stock to mitigate concentration risk. As SK Hynix's meteoric rise pushed its weighting within the KOSPI up to roughly 17%, institutional fund managers hit a harsh regulatory wall. They found themselves in a dilemma where they were legally barred from purchasing additional SK Hynix shares, and in some cases, were forced to pare back their holdings.

Desperate to maintain exposure to the semiconductor sector's upside momentum, this massive influx of sidelined institutional capital aggressively pivoted toward an alternative: SK Square. Holding a 20.5% equity stake in SK Hynix and boasting a 98% price correlation with its subsidiary, SK Square became the perfect proxy. This immense liquidity inflow triggered a supply-demand squeeze that caused SK Square to outpace even its high-flying subsidiary, rallying over 80% in a single month compared to SK Hynix's 59% gain.

Core Catalyst 2: NAV Discount Resolution and Value-Up

Complementing the liquidity influx is SK Square's aggressive execution of its corporate "Value-Up Program," which has served as a critical trigger for overcoming the chronic "Korea Discount" associated with holding companies. Historically, Korean holding entities trade at steep 50% to 70% discounts relative to the intrinsic value of their underlying asset portfolios. However, SK Square broke the mold by tying the Net Asset Value (NAV) discount rate to the management's Key Performance Indicators (KPIs) and publicly pledging to slash this discount to below 30% by the year 2028.

Thanks to relentless efforts to boost corporate value and proactive communication with global shareholders, SK Square's NAV discount—which stood at a glaring 65.7% at the end of 2024—rapidly narrowed to approximately 45.1% by late April 2026. This rapid contraction sends a clear signal: the market is moving away from treating SK Square as a passive shell company, instead re-rating it as an independent value creator capable of fully reflecting its subsidiary's growth and aggressively pursuing strategic tech investments.

Investment Strategy: Aggressive Shareholder Returns

From an individual investor's standpoint, SK Square's evolved shareholder return policy is a major focal point. As record-breaking cash dividends from SK Hynix flow into the parent entity, SK Square has established a highly efficient capital cycle to funnel these profits directly back to its shareholders. The management board recently solidified a mid-term policy for 2026-2028, committing to return at least 30% of recurring dividend income, along with a portion of proceeds from investment exits, to the market.

For the 2026 fiscal year, SK Square is executing a massive 310 billion KRW shareholder return package. This includes a landmark 200 billion KRW inaugural tax-free cash dividend, seamlessly combined with 110 billion KRW dedicated to on-market share buybacks and immediate cancellations. The unwavering commitment to systematically incinerating treasury shares rather than hoarding surplus cash effectively shrinks the outstanding float, offering investors a mathematically certain mechanism to elevate their per-share ownership and long-term dividend yield metrics.

Market Outlook and Risk Assessment

Looking ahead into the latter half of 2026, prominent Wall Street and Yeouido brokerages maintain a highly optimistic consensus regarding SK Square's trajectory, leading to a wave of aggressive target price upgrades. NH Investment & Securities recently hiked its price target to 1.1 million KRW, emphasizing that the immense cash flow generated from the memory boom will continually reload SK Square's ammunition for enhanced dividends and highly accretive M&A in the AI infrastructure space. Daishin Securities also issued a bold upgrade, setting a 1.0 million KRW price target based on the anticipated ongoing influx of institutional "alternative" capital and further contraction of the NAV discount.

Nevertheless, prudent investors must remain vigilant regarding inherent macro and structural risks. With over 80% of its total asset portfolio heavily concentrated in SK Hynix, SK Square remains acutely vulnerable to inevitable cyclical downturns in the global semiconductor industry; any softening in HBM demand could trigger severe price corrections. Additionally, the recent escalation of geopolitical tensions between the US and Iran in the Middle East has heightened the risks of energy price shocks and currency fluctuations, which could induce sharp short-term volatility across the broader Korean equity market.

Conclusion and Actionable Insights

In conclusion, SK Square's dramatic ascent to the Top 3 of the KOSPI is not a mere accident. It is the perfect storm created by the fundamental earnings power of the AI semiconductor supercycle, the regulatory supply-demand distortions triggered by the 10% fund rule, and a resolute management commitment to structural NAV Value-Up. By successfully establishing a shareholder-friendly architecture anchored by its first-ever 200 billion KRW cash dividend and continuous share cancellations, SK Square has proven its fundamental strength. For discerning investors, this suggests that rather than engaging in short-term momentum trading, approaching SK Square with a long-term value investing horizon presents a compelling opportunity to sustainably capitalize on the ongoing evolution of the global AI and semiconductor value chains.