Not that its any of your business but my BLK holdings record is as follows:
2/12/2015 Bought xxx @ 22.5cents
29/02/2016 Sold all @ 47.5cents
22/05/2015 Bought xxx @ 18cents
9/07/2015 Bought xxx @15cents
12/07/2016 Sold all @90.69cents
05/03/2018 Bought xxx (opt) @5.5cents
20/03/2018 Sold all @8.1cents
27/03/2018 Bought xxx (opt) @3.3cents (still holding)
In future stick to your knitting.