The Fed has pumped hundreds of billions into the market through 'repo' offerings. Here's what they are, and why they're back for the first time since the financial crisis.

• The Federal Reserve Bank of New York has been offering market repurchase agreements for more than a week now, with several more operations scheduled for throughout the fall.
• Repos are one of the several policy tools the central bank uses to calm money markets and maintain steady interest rates.
• Here's everything you need to know about repo operations, including the amounts scheduled for release and the purpose they serve the US economy.
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The New York Federal Reserve is well into its second week of offering market repurchase agreements. Known as repos, the operations are designed to soothe money markets and bring interest rates within the central bank's intended range.

Repos are one of several policy tools used by the central bank to regulate the economy and keep expansion sustainable. The Fed hadn't offered them for more than a decade before the September sales, and their reintroduction signals the bank is ready to intervene more frequently to steady the borrowing landscape.

The Fed has scheduled repo operations for every business day until October 10, with the option to pursue additional sales down the road. Here's everything you need to know about repos, including the amounts scheduled for daily offerings and what purpose they serve the US economy.

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