In This Story RKT -7.10% COOP +17.29% RDFN -9.89% UWMC -1.51% PFSI +1.39% Rocket Companies ( RKT -7.10% ) stock dropped 7.6% after it unveiled an agreement to acquire Mr. Cooper ( COOP +17.29% ) for $9.4 billion in shares, boosting its mortgage servicing portfolio to $2.1 trillion in unpaid balances, or about one in every six U.S. home loans. Suggested Reading Tesla's first-quarter deliveries are likely to miss the mark, according to analysts Don't worry about Jeff Bezos’ lavish wedding, Venice