why does share price godown everytime i sell

  1. 48 Posts.
    Why does the share price of the companies go down on comsec every time I sell. Is it rigged to skim profits? Usually 5% less than what is quoted when I go to sell.

    Other sites such as ASX give different quotes they don't change as soon as I sell what is going on? So how can it be me causing the price to drop and would it not drop after I sell?

    I know data I delayed but why does it immediately drop? These are at market orders.
 
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