Mar 13 Update:

#Grayscale decreased 6,876 $BTC (-$500M) and currently holds 388,869 $BTC($28.28B).

#Blackrock added 11,871 #BTC (+$863M) and currently holds 215,626 $BTC ($15.68B).

9 ETFs(Including #Grayscale) added 9,126 #Bitcoin (+$663.7M)