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Originally Posted by nuclear500
I'm still a little confused.
Wikipedia says:
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In the United States, the federal funds rate is the interest rate at which private depository institutions (mostly banks) lend balances (federal funds) at the Federal Reserve to other depository institutions, usually overnight.It is the interest rate banks charge each other for loans.
I think I understand the general concept of why interest rates and bond prices move in opposite directions. The way I understand it is, you pay a price for a bond, and you receive some future cash flows. If you wanted, you could quantify this relationship by talking about a rate of return. If interest rates changed (for example, CD deposits), then there would have to be some change in the price of the bond, in order to change the rate of return on that bond to the interest rate (because nobody is going to buy a bond that pays 5%, when CDs are paying 6%).
What I'm fuzzy on, is how the FED funds rate changes interest rates. The FED doesn't just go out and say, "CDs now pay X% interest." Rather, the FED supposedly changes these interest rates by controlling the FED funds rate. It's not clear to me how changing the rate at which banks lend to one another, changes the interest rate that banks charge their customers.