- Barclays research said Hurricane Irma's insured damage in Florida could be the largest ever in the U.S., "perhaps equivalent to Hurricane Katrina."
- Category 5 Hurricane Irma is the strongest hurricane on record in the Atlantic basin outside of the Caribbean Sea and the Gulf of Mexico, according to the National Hurricane Center.
- Reinsurance stocks were some of the market's worst-performing on Tuesday, with XL Group down 6 percent.