First quarter data revealed some genuinely surprising shifts in how Korean trading sessions behaved relative to global markets. The traditional correlation patterns weakened significantly, which meant automated strategies that relied on those relationships underperformed.
Pre-market indicators lost some predictive value. Gap trading strategies needed adjustment because opening ranges compressed. Breakout traders found fewer clean setups, while mean-reversion approaches actually improved. The market rewarded different skills than it did six months ago.
Volume profiles flattened out during midday sessions but maintained strength into the close. This created interesting opportunities for those willing to hold positions through what used to be dead zones. Risk-adjusted returns improved for patient traders who adapted their timing.