NY Fed Treasury Purchases 6 to 10 yrs is a calendar label, not a standalone publisher index. It means one outright operation in nominal Treasury securities with 6 to 10 years left. The Federal Reserve Bank of New York runs it through its trading desk. It buys for the System Open Market Account to test operational readiness under committee directives.
It is not a price, yield or sentiment gauge. It is not total Fed holdings, which appear in a separate weekly release. It is not Treasury buybacks, which the New York Fed runs only as fiscal agent.
It differs from large buying programs such as quantitative easing. It has no fixed cadence and occurs only when the schedule lists it.