Running discussion on SP, page-47526

Perhaps corporate/institutions have the same software and are strategically playn this to move SP higher as FOMO slowly continues daily on AVZ SP
instos let retail jump on board and have their fill today then corporate come back to lubricate the liquidity on SP then step back let retail rush in for FOMO
Cyclic to a rising SP

Can you explain better what they mean by corporate on that chart?
who are they?
institutional?
Fund managers?