SK Chairman's $6B Divorce Retrial: What California Law Says on Stock Gains

South Korea's largest-ever divorce case returns to the Seoul High Court for a July 24, 2026 verdict, with the central question being whether SK Inc. shares should be valued at 149,500 KRW (April 2024) or roughly 815,000 KRW (June 2026) — a 5.45x swing driven by AI-chip gains. In California, this timing question is settled by Cal. Fam. Code § 771: earnings and accumulations after separation are separate property.

Key Facts

The dispute, as reported by Bloomberg, turns on a valuation-date fight that would be resolved very differently under California law than under South Korea's marital-property regime. A prior 2024 appellate ruling had ordered Chey to pay roughly 1.38 trillion KRW (about $1 billion) — the largest divorce award in Korean history — before the case was sent back for retrial.

Why this matters legally

Valuation date decides the size of a marital estate, and in high-net-worth divorces involving publicly traded stock, the difference can run into billions. The SK case is a textbook illustration: the same block of shares is worth 5.45 times more in June 2026 than it was in April 2024 because of the AI and semiconductor boom that lifted SK Hynix, an SK affiliate. Whether the ex-spouse shares in that appreciation depends entirely on which date the court picks and whether it treats the gain as marital or separate.

South Korean courts weigh contribution to asset formation and can, in some circumstances, reach appreciation tied to the marriage. California draws a sharper line. Once spouses separate, the clock effectively stops on the community estate for new earnings and accumulations. That single doctrinal difference — flexible contribution analysis versus a bright-line separation date — is why the same facts could produce a billion-dollar swing depending on jurisdiction. For anyone navigating the divorce process, the valuation date is often the most consequential number in the entire case.

How California law handles this

California is a community property state, and Cal. Fam. Code § 760 provides that all property acquired by a married person during the marriage is community property, divided equally (50/50) upon divorce. The critical carve-out is Cal. Fam. Code § 771: the earnings and accumulations of a spouse after the date of separation are that spouse's separate property. So post-separation stock appreciation driven purely by market forces generally stays with the owner spouse.

California defines the date of separation in Cal. Fam. Code § 70 as the date a complete and final break in the marital relationship occurs, shown by one spouse expressing intent to end the marriage and conduct consistent with that intent. This date is frequently litigated precisely because it fixes when community accumulation ends.

The harder question is business-related appreciation. When a spouse actively manages a company after separation, California uses two apportionment formulas from case law — Pereira (favoring the community when growth comes from the spouse's efforts) and Van Camp (favoring separate property when growth comes from the character of the asset itself). Under a Pereira analysis, a chairman like Chey who actively steers the company could see some post-separation growth characterized as community. Under Van Camp, gains attributable to a semiconductor market rally rather than personal labor would more likely remain separate. California courts also value community assets as close to trial as practicable under Cal. Fam. Code § 2552, though separate-property gains after separation are excluded from division. Readers weighing how these rules affect their own property division should map both the separation date and the source of any appreciation.

Practical takeaways

1. Pin down your separation date early. Under Cal. Fam. Code § 70, this date fixes when community accumulation stops. Document the moment of the final break with dated communications, since a difference of months can shift six or seven figures in a stock-heavy estate.

2. Distinguish market gains from effort-driven gains. Appreciation from a market rally is more likely separate property under Van Camp; growth driven by a spouse's active management after separation may be apportioned to the community under Pereira.

3. Get stock and business interests professionally valued. In cases with concentrated equity positions, a forensic accountant and a business appraiser are essential. Use our divorce cost estimator to budget for these expert costs, which are common in high-asset cases.

4. Understand the disclosure duty. California requires full financial disclosure under Cal. Fam. Code § 2104. Concealing stock holdings or valuation data carries serious penalties, including potential loss of the undisclosed asset.

5. Map your timeline. The gap between separation and trial can span years, and asset values move in that window. Our divorce timeline tool helps you anticipate how long California proceedings typically run.

Cross-border, high-net-worth divorces like the SK case show how much the outcome depends on which country's law applies. The same stock block that generated a reported 1.38 trillion KRW award in Korea would be analyzed through California's separation-date and Pereira/Van Camp lens if the couple divorced here — potentially producing a very different division of that $6B+ in gains.

If you are facing a divorce that involves business interests, stock options, or other appreciating assets, the valuation date and characterization rules are worth understanding before you file. Start with a personalized divorce roadmap to see the steps ahead, or find a California divorce attorney who handles complex-asset cases when the stakes call for professional guidance.

This article discusses recent news and provides general legal commentary. It does not constitute legal advice. Every case is unique. Consult a qualified family law attorney for advice specific to your situation.