Yes, and you've just described a classic pump-and-dump scheme and the "painting the tape" tactics used for the pump. https://en.wikipedia.org/wiki/Pump_and_dum

Yes, and you've just described a classic pump-and-dump scheme and the "painting the tape" tactics used for the pump. https://en.wikipedia.org/wiki/Pump_and_dump https://en.wikipedia.org/wiki/Pump_and_dump https://en.wikipedia.org/wiki/Market_manipulation#Runs https://en.wikipedia.org/wiki/Market_manipulation#Runs