美国财政部拍卖180亿美元10年期通胀保值债券（TIPS），得标利率2.220%，投标倍数2.36。

Core Points - The U.S. Treasury auctioned $18 billion of 10-year Treasury Inflation-Protected Securities (TIPS) with a winning yield of 2.220% [1] - The bid-to-cover ratio for the auction was 2.36, indicating strong demand for the securities [1] Summary by Category Auction Details - The auction involved $18 billion of 10-year TIPS [1] - The winning yield was recorded at 2.220% [1] - The bid-to-cover ratio was 2.36, reflecting robust investor interest [1]