The main differences are:1) rarely have a greater than 10%...

The main differences are:
1) rarely have a greater than 10% high/low gap in the day (5% is fine)... your 30% gains can happen but will generally take time and timing
2) they are very liquid so you will rarely get stuck holding a "dog" forever
3) easy to borrow to buy
4) Dividends!!!
5) They generally recover well from downturns (like Covid) and rarely have 3 bad days in a row
6) my favourites are
APT
WTC
BOQ
RIO
WES