Spikes occur whenever liquidity is scarce, for example at the end of a trading session when liquidity providers roll over their activities to the next day.
Economic and political news announcements also cause spikes. Click on a flag to see what event caused the related spike.
Date time labels indicate the end of a 15 minute period and are in your browser's timezone.
The Live Quote is updated every 5 seconds. The Historical Spreads graph is updated every hour.