EURCHF: the pair that looks like it's asleep until it isn't

[Shadow Trader]

EURCHF moves slowly. Daily ranges are small, and ticks arrive in a sleepy rhythm. For anyone looking for a calm pair to scalp, it can seem ideal.

The risk is in the structure. The Swiss National Bank has a long history of intervening in the franc, and the pair is sensitive to risk-off events when investors rush into the franc. Spreads, which look reasonable in normal conditions, can multiply when volatility returns.

The microstructure is peculiar too. Quotes often sit still for several seconds, then move two or three pips at once. The tick chart looks like a staircase rather than a smooth line, since the quote engine updates in steps. Mean-reversion strategies see plenty of false signals as the staircase steps through bands.

Swap rates are also meaningful, since the interest differential between the euro and franc has been wide for years.

The pair rewards patience and punishes complacency. A strategy tuned to a quiet regime can lose several weeks of profit in a single abnormal session.

What was the biggest surprise move on EURCHF in an otherwise sleepy week?