The Chicago mercantile Exhcnage have announced a round of increased margin (performance bond) requirements

Includes GBP currency futures and gold (GC)

GBP:

Gold (GC):

Old in the box on the left, new in the box on the right


The new rates will apply after the close of business on Friday 27 February 2016

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The CME is coy on the 'why', doling out the bland:

  • As per the normal review of market volatility to ensure adequate collateral coverage

Brexit referendum and the increase in volatility we already seeing in GBP is an unstated reason.