国开行发行1年期债券，规模60亿元，发行利率1.3838%，预期1.4000%，投标倍数2.92倍，边际倍数1.79倍；国开行发行5年期债券，规模110亿元，发行利率1.5564%，预期1.5300%，投标倍数2.71倍，边际倍数3.83倍；国开行发行10年期债券，规模210亿元，发行利率1.6790%，预期1.6700%，投标倍数2.74倍，边际倍数13.22倍。

Group 1 - The China Development Bank (CDB) issued a 1-year bond with a scale of 6 billion yuan, an issuance rate of 1.3838%, and a bid-to-cover ratio of 2.92 times [1] - The CDB issued a 5-year bond with a scale of 11 billion yuan, an issuance rate of 1.5564%, and a bid-to-cover ratio of 2.71 times [1] - The CDB issued a 10-year bond with a scale of 21 billion yuan, an issuance rate of 1.6790%, and a bid-to-cover ratio of 2.74 times [1] Group 2 - The expected issuance rate for the 1-year bond was 1.4000%, while the actual rate was lower [1] - The expected issuance rate for the 5-year bond was 1.5300%, with the actual rate being slightly higher [1] - The expected issuance rate for the 10-year bond was 1.6700%, with the actual rate being marginally higher [1] Group 3 - The marginal bid-to-cover ratio for the 1-year bond was 1.79 times [1] - The marginal bid-to-cover ratio for the 5-year bond was 3.83 times [1] - The marginal bid-to-cover ratio for the 10-year bond was 13.22 times [1]