Only about one-third of health insurers came out ahead in their first year in the ObamaCare marketplace, according to a study by the Commonwealth Fund released Wednesday.

While insurers made nearly twice as much money from healthcare premiums in 2014, overall profits “diminished noticeably” because of higher payouts, according to the expansive new analysis on companies participating in the exchanges.

Overall, health insurers underestimated their total medical costs by about 5.7 percent in their first year.

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