Shares for online gambling company Zynga skyrocketed 11 percent on 8 February last week.
Zynga shares are now thought to be worth more than $3.43 a share. This is the highest the stocks for the company have risen in almost 7 months.
The overnight spike in stock market value is believed to have something to do with the state of New Jerseyâ€™s move to probably legalize online gambling in future.
Last week New Jersey governor Chris Christie announced that, although the online gambling bill was being vetoed, it would be accepted with a few minor alterations. This makes New Jersey the third US state to significantly move towards online gambling.