Seven Day Yield

You've invested a grand in a money market fund that quotes its Seven Day Yield (no relation to the 7th Day Adventists, although you do pray that you get the money; you're a Nervous Nellie). So over 7 days, for a grand, you get a dollar.

What's the 7 day yield? Well, you annualize it. That is, in 7 days, if you get a dollar, then with 52 weeks in a year, you'd presumably get $52, for an annualized yield of 5.2% on that grand you've invested.

Make sense? No. Make dollars.