CDEL is 100% computer-controlled MM. No humans involved. When u see large BID by CDEL means they are LONG on shares that they want to sell. So they are enticing buyers by showing large BID size. Try selling large shares at that BID it will execute one trade and then lower the BID price.
The computer does the calculations and creates the orders on its own. Someone dumped large shares earlier that CDEL absorbed and now wants to sell at higher pps to make $$.
When u see a large ASK size by CDEL means they are short on shares and scaring people to sell by showing large ASK size.
CDEL has hundreds of MIT/Harvard-trained Ph.D. quants who are continuously tweaking the algo. 90% of trades on Robinhood order flows through CDEL.
If one understands how CDEL algo works and just follows their action one will make money always in short term.
Fools argue to win, so stay away from them and still say Thank you. Smart people argue to seek the truth and say "Thank You" when they find that they are wrong.