Shares of GameStop fell more than 15% on Thursday after the company’s plan to finance its bitcoin pivot raised questions about the timing of its move and its strategy to turn around its struggling retail business.

The video game retailer's shares rose 11.6% to $28.36 on Wednesday after GameStop said it would invest in bitcoin.

The company said Tuesday its board voted unanimously to raise $1.3 billion to purchase Bitcoin, while simultaneously closing a “significant number” of retail stores. Although the news was greeted with a 14% same-day stock bump,