Here are median values of ES volume for each 15-minute period during the trading day (last 12 full trading days). The fifteen minute periods begin with the times noted below, Central Time:
8:30 - 129,016
8:45 - 105,750
9:00 - 128,045
9:15 - 106,730
9:30 - 85,685
9:45 - 79,409
10:00 - 78,328
10:15 - 69,616
10:30 - 53,424
10:45 - 51,084
11:00 - 42,182
11:15 - 55,059
11:30 - 37,002
11:45 - 45,867
12:00 - 35,095
12:15 - 44,212
12:30 - 38,450
12:45 - 35,848
13:00 - 39,102
13:15 - 45,173
13:30 - 49,051
13:45 - 53,474
13:45 - 53,474
14:00 - 67,905
14:15 - 74,898
14:30 - 82,093
14:45 - 125,550
15:00 - 122,409
I notice Market Tells is tracking relative volume across multiple instruments; that's a great resource.
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