Key TakeawaysGameStop swung to an unexpected profit in the second quarter, but its sales fell 31% and missed expectations.The meme stock standout struggled Tuesday before its results came out, but the stock is still substantially higher year-to-date.GameStop did not issue guidance, nor did it schedule an earnings call. GameStop's (GME) second quarter sales declined year-over-year, missing Wall Street's expectations, but the video game retailer managed to swing to a surprise profit. Revenue in the latest was ...