Complex sentence: Aided by Delaware law, the state is a corporate haven with over 50% of U.S. publicly-traded corporations and 60% of the Fortune 500 companies are incorporated in that state.
Split into simpler sentences: Aided by Delaware law, the state is a corporate haven with over 50% of U.S. publicly-traded corporations. In addition, 60% of the Fortune 500 companies are incorporated in that state.