Volume was so slight that, first approximation, no institutions were trading today. (Not trading equities on an expected down-day anyway.)
Why would that be with an upcoming huge Greek vote after the market closes? After all, EUR/USD = US Equity.
Combination of reasons:
1. The vote is already predicted with a large degree of certainty for some reason(s) and/or...
2. Any problems can be addressed in the 24 hour Forex market with direct EUR/USD purchase/sale or with futures to handle things until Monday.
Forex trades? Yes, the volume of anything can disappear in the standard Forex volume and become untraceable. But don't forget to look at the put/call volumes for EUR/USD for now.
Also, the EUR/USD has made relatively zero movement and that movement is a requirement for the algorithms to run; therefore, small volume today.
