I just made my 2014 contribution into my Fidelity HSA and have ~15k of cash sitting in the account. I want to invest this into a total stock market index fund so i can earn some returns, but I'm having issues picking the fund because I do all of my other investing at Vanguard. I was looking at VTSMX, but wasn't sure if I can get the Admiral shares through Fidelity. I was unable to view the VTSAX on the investment options screen at Fidelity for the HSA which makes me think I'm unable to access this fund class with lower expense ratios. I'm wondering if I need to purchase a Fidelity based total market index fund like the FSTVX to get the advantage of the lower expense. Please let me know your thoughts.
Also kicking around the idea of toying with an ETF here as well, but the rest of my portfolio is in index funds.
Thanks for the help