Field Notes · 18 January 2026
Volume Clues at Bangkok Session Opens
The first thirty minutes after SET open behave differently from mid-morning drift. How we read participation when validating reversals near overnight gaps.
Thai market opens at 10:00 local time, and the volume surge in that window often defines whether a reversal at a pre-marked level will hold through lunch. Workshop participants frequently ask whether volume rules from US session materials apply here. They do, but the timing shifts.
Opening spike versus sustained bid
A single high-volume bar at the open proves little. We look for two or three consecutive bars with above-average volume while price holds above the level. That pattern suggests genuine defence rather than a one-off sweep.
Gap fills and level confluence
When an overnight gap lands inside a weekly support zone, the open becomes a natural test. Mark the gap midpoint separately from the swing low—sometimes price fills the gap first, tags the deeper level second, and only then prints a valid reversal structure.
Practice without capital
Replay opening sessions on historical data and score each reversal against our checklist. Patterns emerge quickly once you stop watching P&L and start watching participation at the level.