I think people are onto the game now.  Sell when Saylor's buys pump up the market and then wait for the crash and buy back lower.  I saw this back in 2012 when pirateat40 was manipulating the market running his Ponzi Scheme.  It wasn't until the BitPay guys bought after pirate's sell and forced him to buy back higher that it stopped.  Some big fish will see the games being played and use it as an opportunity to stack.  Then we'll stop seeing these dips.  The playbook for traders seems pretty clear right now though.  On the plus side, Saylor still has lots of cash left to make big buys in the near future.