Michael Saylor buying $500m or even a billion with his strategy.
How to know when has he entered in the buying spree by looking at the price movements or charts?
The only way to find it is ask his bitcoin address. Obviously you can't know how and when he will buy the bitcoin. But if he feel bitcoin is dropped lot from his buying price, he will announce it on public if he already bought bitcoin to hope it pump. Just like he did when bitcoin dropped below $40,000 back then