Unscheduled headlines behave differently from calendar events

[Shadow Trader]

A social media post or a surprise geopolitical headline has no countdown. A few things that get overlooked about them:

- No warning phase. Spreads often do not widen ahead of time, so the first move can hit at a normal spread while positions are sized for a quiet market.
- Source matters more than wording. The same sentence from an official account versus a repost can produce very different reactions, and often a reversal once the original gets denied or clarified.
- Gaps become possible on pairs that rarely gap on calendar news, particularly around weekend opens.
- Safe-haven flows are not always where expected. A currency that usually benefits may not if the story concerns that country directly.
- Repeated headlines lose power. The third version of the same threat tends to get less reaction than the first.

None of this makes headline trading easy. It mainly explains why a position that felt comfortable on a Friday afternoon can behave very differently at the Sunday open.

Which type of unscheduled headline has hurt or helped you most, and how fast did you realise the reaction was fading?