TreasuryDirect is the online spot where you can buy securities and U.S. savings bonds like the I Bond.

Investors crashed the Treasury Department website for Series I bonds on Friday as they clamored to lock in a record-high interest rate before a key deadline. I bonds have proven to be a bright spot ...

Though the potential return of U.S. Treasury I-bonds as a long-term investment is no sure thing, Americans have voted for them with their wallets: Billions of dollars of these formerly obscure ...