But what about reinsurers like Berkshire Hathaway? Yes Berkshire is certainly an extremely large reinsurer (and insurer), but is the business model it follows one that makes it particularly systemically important? In terms of major exposures at Berkshire Hathaway, one that comes to mind is the asbestos liabilities that Berkshire Hathaway took on, including having assumed large amounts of asbestos risk from other global reinsurers over the years. Will Berkshire Hathaway become one of them? Something that Berkshire Hathaway could surely adjust to, given its size, even if it needed to change some of its business practices to keep regulators happy.