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Korea's pension fund loses US$152.6B in three and a half months as Samsung and SK hynix slide

What's the deal? South Korea's National Pension Service (NPS) saw the market value of its disclosed domestic stock holdings fall US$152.9B, or about $136.63 billion, over three and a half months. The value of its stakes in 287 listed companies dropped 35.3%, from US$432.6B at the end of June 2026 to US$279.6B as of October 15, 2026, according to data provider FnGuideDealroom has a profile for this one. Try Dealroom →.

What's behind it? Two chipmakers drove most of the decline. The estimated value of the NPS's SK hynixDealroom has a profile for this one. Try Dealroom → stake fell US$62.2B, while its Samsung ElectronicsDealroom has a profile for this one. Try Dealroom → holdings dropped US$47.7B — together roughly 72% of the total decline.

Why now? It is the fund's first quarterly decline in seven quarters, dating back to Q4 2024, and it came right after the fund posted record gains through Q2 2026. The KOSPI plunged 7.57% on October 15, 2026 alone.

What's the context? The US$152.9B figure reflects a mark-to-market drop in disclosed stakes, not a realised loss on the entire portfolio. The sell-off was amplified by foreign outflows and concerns about Chinese memory-chip competition and the durability of AI investment.

What could go wrong? On October 19, 2026, the Korea Shareholder Movement Headquarters, a civic group, filed a complaint with the Corruption Investigation Office for High-ranking Officials against President Lee Jae-myung and Health and Welfare Minister Jeong Eun-kyeong, accusing them of abuse of authority. The group argues the NPS's decision to defer rebalancing its domestic equity portfolio in January 2026 worsened the impact of the subsequent downturn.

The signal: The episode is less a sign of pension solvency trouble than a stark illustration of concentration risk. Heavy exposure to Korea's two chip leaders magnified the fund's swings — and underscored the trade-offs of managing a pool large enough to move the market it invests in.

Read more: BusinessKorea

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