Volume was very heavy today relative to the 10 day moving average.
Via CRT Capital:
Volumes on Wednesday were understandably strong, with cash trading at 130% of the 10-day moving-average for the most active session since mid-April. 5s continued on as the most active issue, with a 33% marketshare, but 7s picked up to 11% and 10s managed to get 27%. 2s and 3s were reasonable, at 8% and 16% respectively. Flows in the long-bond were uninspired, taking just 5% of trading.