The fluctuations observed during the day:

=================================================================================
                                  Current Session                       Prior Day
          Open    High    Low      Last     Time     Set     Chg    Vol       Set
=================================================================================
May'15   64.90   66.89   64.90    66.50    14:20   66.50    1.91    1801    64.59
                                           April 24
Jul'15   65.72   66.59   65.20    66.34    14:20   66.34    0.89   35217    65.45
                                           April 24
Oct'15   65.02   65.65   64.98    65.61    14:20   65.61    0.50      37    65.11
                                           April 24
=================================================================================