... My thoughts would be that in the example of FAR investors would flock to buy driving share price up, meanwhile many early investors would be selling. Then, after the honeymoon period of around a week and throughout the following months as the company sells the oil the share price shouldn't be doing anything outrageous other than grow at a standard rate as cash flow reports are released. Of course fundamental data eg assets/liabilities/equity will also play a role but assume the company's financials are stable ...