Mar 19 Update:
#Grayscale decreased 2,071 $BTC(-$131.85M) and currently holds 378,169 $BTC($24.07B).
#Blackrock added 6,721 $BTC(+$427.84M) and currently holds 237,339 $BTC($15.1B).
9 ETFs(Including #Grayscale) added 5,400 $BTC(+$343.74M).