A major U.S. currency broker said it suffered “significant losses” that wiped out its equity, and a New Zealand foreign-exchange trading house failed, as the fallout from the decision by the Swiss National Bank to cease capping the nation’s currency spread across the world.

FXCM Inc. US:FXCM, the biggest retail foreign-exchange broker in Asia and the U.S., said in a statement that due to unprecedented volatility in the euro against the Swiss franc, its losses left it with a negative equity balance of around $225 million and that it was trying to shore up its capital.