Eligible assets include stocks, bonds, mutual funds, CDs, money market, and savings (retirement accounts are not eligible). (bankofinternet.com)
For money funds, yields on eligible assets are very low, and it is difficult to pay a positive return to shareholders after costs. (alt-m.org)
Accounts can be funded with a check, bank wire, an exchange purchase from an existing Fidelity account, or a transfer of eligible assets from an account at another institution. (fidelity.com)