Many have asked the government to extend the subsidies for 2018. Aetna said it is still evaluating its other remaining individual insurance markets, which include Delaware, Nebraska and Virginia. The company exited most markets this year but in January said it had more than 240,000 people in individual plans and expected to post losses on them this year. Health insurers are preparing 2018 premium rate proposals to submit to federal and state insurance regulators over the next few months. Aetna said it had notified regulators of its plans on Thursday.