How much interest will a $150,000 money market account earn now (and is it worth opening)?

Savers should carefully calculate their interest-earning potential before opening a money market account right now. Kseniya Ovchinnikova/Getty Images On the surface, depositing a large, six-figure amount of money into a savings account with an interest rate of around 4.00% may not make sense – especially not when stock market returns are reliably around 10% or higher. …