Samsung Electronics shares flat as strike fears grow

Samsung Electronics shares closed nearly flat on May 20 after government-led mediation with its largest union collapsed.

The company sought more time to review a proposal the union had accepted, leaving the chipmaker facing a full strike from May 21.

The stock ended at 276,000 won (US$180), up 0.18%, after falling as much as 4.36% earlier when news of the failed talks emerged.

Samsung shares have risen 65.07%, trailing South Korean memory chipmaker SK hynix at 116.23%, as investors weighed strike risks and a bonus dispute.

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Implications, context, and why it matters.

A court injunction narrowed the union’s room to act before the strike, requiring normal staffing for safety, facility protection, and product quality 1.
The order also blocks union members and leaders from occupying or locking facilities or obstructing workers. Violations could bring a daily fine of 100 million won (US$74,000) 1.
Bonuses sit at the center of the dispute. Samsung offered a one-time payment, while rival SK hynix was linked to larger payouts, though the figures were not independently confirmed in the source material provided here 1.
Before the planned walkout, Samsung began adjusting chip output. Steps under review included a “warm-down” process and fewer new wafer inputs to limit damage from a stoppage 2.

Any hit to Samsung’s production could affect the global semiconductor supply chain. The company was also weighing a shift toward higher-margin products 2.
On the day mediation collapsed, Chinese chip stocks jumped. SMIC, China’s largest contract chip manufacturer, rose 10.07%. Hua Hong Semiconductor, another Chinese contract chip manufacturer, gained 17.98% 3.
That move tracked company forecasts for second-quarter revenue growth, tied to strong AI demand and a memory supply crunch 4.
Still, the rebound followed a weak period. Hua Hong Semiconductor’s first-quarter 2025 net income fell 88.1% from a year earlier, so the recent rise came off a low base 5.