GameStop stock plummeted Tuesday, losing more than half of its opening value and falling to its lowest level in a week.

Shares of GameStop plunged to $90 by the end of Tuesday trading, a 60 percent loss that shaved $135 from its opening price.

GameStop stock has fallen steadily since Thursday after hitting a peak of $483, roughly 1,800 percent higher than its price at the start of the year.