And in the three cases where I could see supporting data about premium revenue and losses, those losses appear to be large. Moda of Oregon says that its claims were 139 percent of revenue, making for a margin of -61 percent. If I am reading their somewhat confusing table right, Health Service Corporation of New Mexico says it lost $23 million on revenue of $121 million. CareFirst of Maryland says that claims were 120 percent of revenue, which if we add in some money to pay for overhead, amounts to ... less than or equal to what they're asking from regulators. I can't find claims experience data for Tennessee, but that state told the Wall Street Journal that it lost $141 million on exchange plans last year.
Now, this is not the whole story. These are only the biggest insurers in some states…'
http://www.bloombergview.com/articles/2015-05-25/sticker-shock-for-some-obamacare-customers