Carnival Corporation (CCL) shares tumbled 5.15% in pre-market trading on Thursday, despite receiving mixed signals from analysts. The cruise line operator's stock movement comes amid a flurry of analyst updates that paint a complex picture for investors.

Morgan Stanley, a prominent Wall Street firm, raised its rating on Carnival to Equal Weight from Underweight, suggesting a more neutral stance on the company's prospects. However, in a seemingly contradictory move, the same analysts also cut their price target for Carnival to $21 from $25, indicating reduced expectations for the stock's potential upside.

The conflicting nature of these analyst actions may be contributing to investor uncertainty, potentially explaining the significant pre-market drop. Traders appear to be focusing more on the lowered price target rather than the improved rating, reflecting concerns about Carnival's near-term growth prospects in the competitive cruise industry landscape.