When stock market goes up/down, is it retailers driving it or institutions?

..Put another way, who has the biggest influence on the markets.. all retail traders or all the big institutional traders?

...Put yet another way, who has more buying power.. all of retail or institutions?

...i understand institutional traders do/can collude to push markets in the direction they want but they can't always be doing that, right?

When i see the index go down say 2%, i want to know, is that because \*retail\* investors are dumping or \*institutions\*? ...... Conversly, when the market goes up 2%, is that retail buying or institutions? ...........For example, at the start of the day, market is red, then by the end of the day, it turns green... who in the morning sold, was it retail?.. and who bought at close, was it institutions?

i read institutions dont like to hold inventory overnight so they would close out all their trades by end of day, this is why so much volume is 5 minutes before close.

so if institutions shorted stocks in the morning, they would buy them back at close.
or if they bought stocks in the morning, they would dump by close.

i also read dip buying is very popular so if stocks are red in the morning, people dip buy by close. but still, are these institutions doing the dip buying or retailers?