Share List of data between Controller Action Methods in ASP.Net MVC

How do we share list of data between controller action methods. Someone suggest me to use TempData. At very 1st time I copied data to Tempdata then to persist data between consequtive requests I used TempData in following manner. Its working fine no issues. But, I think this is not good approch. Suggest me if we have better way.  

TempData["Lines"] = Result.Content.ReadAsAsync<List<Model>>().Result;

TempData["Lines"] = (List<Model>)TempData["Lines"];	

Thanks in advance.