Gamestop stock has reached Europe, and it's even exceeding the gains seen on Wall Street.

Frankfurt traded shares in the gaming retailer rose around 180% in morning trade.

That beats the 100% gain seen in the US earlier, though premarket trades Thursday showed it up another 50% there, with other so called meme stocks also headed sharply higher.

But no one seems totally sure what is driving the gains.

Analysts couldn't pinpoint one reason.

Earlier in the year, Gamestop saw huge gains.

As a result off the so called Reddit rally, amateur traders on one of the Websites forums banded together to drive up the stock.

The shares later fell back and had bean trading in a less volatile way in recent weeks.

This time around, at least one analyst said there was no clear evidence off a new Reddit rally.