For those wanting to transfer an HSA Bank/TDA account to Fidelity, someone at Bogleheads dug up an old thread outlining the method used last year when transferring to Lively was popular. This method was developed after learning the in kind transfer from TDA took about 5 days but the cash transfer from HSA Bank took 6-8 weeks to complete.
1. Move all the cash sitting in HSA Bank to the TDA investment account first. Do not buy any securities, just let it remain cash. This way everything will be at TDA before the transfer and you don't have to submit two separate transfer requests (HSA Bank and TDA). This takes about 2 days.
2. Then establish new account at Fidelity.
3. Have Fidelity initiate the in-kind online transfer from TDA. This takes about 5 days. There is no form to mail in since there is nothing at HSA Bank to transfer. This avoids the 6-8 week bank transfer process.
4. Once the cash and investments are at Fidelity, you can close the HSA Bank account. The account closure fee is not applied since there are no funds in the account.
Certain securities, such as Vanguard Admiral funds, cannot transfer in-kind.