NORWALK - Connecticut-based Aetna says it will cancel its previous plan to expand its Obamacare coverage.
   
The insurer also says it will take a closer look at the coverage it offers in 15 states.
  
Aetna says it will likely lose $300 million on Obamacare policies in 2016.
  
According to federal statistics, more than 11 million people enrolled in Obamacare this year.