[US Media: Republican "Mega Donor" Ken Griffin Expresses Support for Rubio in Presidential Election] According to a report by Jinse Finance on July 9, citing Axios, Ken Griffin, a major Republican political donor and CEO of Citadel Securities, stated during a private meeting on Wednesday local time that if the 2028 Republican presidential primary comes down to Secretary of State Rubio and Vice President Vance, he would support Rubio. Griffin is one of the most active political donors in the Republican Party, contributing over $100 million in 2024. Griffin's remarks highlight the emerging divide within the Republican Party: on one side are establishment-leaning figures like Griffin, who hope Rubio will run; on the other side is a more anti-establishment faction that leans toward supporting Vance, partly because of Vance's reluctance to involve the U.S. in overseas conflicts. Griffin stated that he has consistently supported Rubio in the past and is inclined to back him again. However, Griffin did not specify how he would assist if Rubio decides to run. Rubio, for his part, has previously indicated that if Vance runs, he would step aside for him.