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?
He is doing DCA ( Dolar Cost Averaging ) his average is around $26k. You can do it too if you have deep pocket like him. To be honest DCA is the most profitable strategy in investment. You can win much and lose only small amount.
I dont think there is spesific TA when he buy. He just calculated his whole average buying below $30k