World’s best-performing stock market of 2026 is the worst-performing in March

Relatively cheap energy throughout 2025 helped power the Korean economy while the AI boom supercharged returns for its memory chip-makers. Both drivers are fading fast, however.

Key takeaways

Quick scan — what you need to know:

• Relatively cheap energy throughout 2025 helped power the Korean economy while the AI boom supercharged returns for its memory chip-makers.
• Both drivers are fading fast, however.

Background

What led here, in plain terms:

• y throughout 2025 helped power the Korean economy while the AI boom supercharged returns for its memory chip-makers. Both drivers are fading fast, however.
• Full context often emerges as officials, markets, or courts add updates.

Why it matters

Why readers and decision-makers should care:

• Relatively cheap energy throughout 2025 helped power the Korean economy while the AI boom supercharged returns for its memory chip-makers.
• Both drivers are fading fast, however.