Complex sentence: Yet, because it has no stakes exchanged on the market, it has no obligations to issue its budget certified by independent parties, which therefore it does not; as a consequence, the data MSC Cruises releases about itself are not verifiable.
Split into simpler sentences: Yet, because it has no stakes exchanged on the market, it has no obligations to issue its budget certified by independent parties, which therefore it does not. As a consequence, the data MSC Cruises releases about itself are not verifiable.