The unusual options activity in Roblox indicates that big-money traders are taking a bearish stance on the stock, which could lead to downward pressure on the stock price in the short term. The 80% bearish sentiment among these traders suggests that they may have information or expectations that the stock price will decline. Additionally, the targeted price range of $40 to $50 over the last 3 months indicates that they expect the stock to trade within this range, which could also impact the stock price.