 Shares of videogame retailer GameStop Corp. GME, -0.16 jumped 15 premarket Friday and pulled other meme stocks higher with them, after the company announced that executives are looking to conduct a stock split for the first time in 15 years. The videogame retailer announced that it planned to ask shareholders for authorization to increase its share count to 1 billion from 300 million so that it can carry out a stock split in the form of a dividend. 