You cannot typically buy stock directly from Carnival Corporation & plc through a company-run "Direct Stock Purchase Plan" (DSPP) if you are a new retail investor. Instead, you must purchase shares through a registered brokerage account (like Fidelity, Schwab, or Robinhood) under the ticker symbol CCL on the New York Stock Exchange or CUK for its London listing. While Carnival uses a transfer agent (Computershare) to manage the records of its existing registered shareholders, most people find it easier and cheaper to hold shares in "street name" via a broker. One major reason people invest in Carnival is for the Shareholder Benefit Program, which offers up to $250 in onboard credit per stateroom on most sailings. To qualify for this perk, you must own at least 100 shares of the company and provide proof of ownership to the cruise line's investor relations department at least a few weeks before your departure date.