I've been watching money market yields for the last several months as interest rates have skyrocketed. I compare the 7 day yield of my money markets at Fidelity, T Rowe Price and Vanguard to see where the best "bang for the buck" exists.
Margin of Safety - This means owning a security way under the current market’s price. For example, if you own Apple at $20 and the price drops down $30 from $141, you are still very far ahead.