Interesting activity

Now is it just a matter of getting shares sold to be able to claim tax deductions or is today's activity and indication of something else. Over 100 million shares traded today which is well up on most days this month.
In fact the early weeks of June saw very few shares traded. Then about the 14th there was one day showing a slight increase which quickly died but began to rise again about the 21st and reaching a peak of about 40 million on Thursday 23rd or thereabouts. The surge dropped away until Wednesday this week at about 35 million and shot up significantly today. Just end of June tax activity ?????