Summary
- The real yield of 0.261% was the lowest for any 29- to 30-year TIPS auction in history, and much lower than the previous record of 0.479%.
- The coupon rate also set a record low of 0.250%, much lower than the previous record of 0.625%.
- Long-term real yields are in a “weird” zone. Beware.
The U.S. Treasury’s auction of a new 30-year Treasury Inflation-Protected Security went off Thursday with a sensational result: A record low real yield of just 0.261%, well below any 29- to to 30-year TIPS auction in history.
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Treasury Inflation-Protected Securities 
Yes, the purchase limit is not affected by an I Bond redemption. It remains $10,000 per person per year.