TD Ameritrade has no decent money market to park cash. (unlike Vanguard) - I am looking at some alternatives...
https://www.investopedia.com/articl...op-4-money-market-fund-etfs-2016-shv-near.asp
https://www.investopedia.com/articl...op-4-money-market-fund-etfs-2016-shv-near.asp