The 1.5 year jumbo CD rate at Capital One 360 Bank was lowered by 20 basis points. The new lower 18 month jumbo CD interest rate is 1.09 percent with a yield of 1.10 percent. The old 18 month jumbo rate was 1.29 percent with a yield of 1.30 percent. See all rate changes to this 18 month jumbo certificate of deposit by going to Capital One 360 Bank 1.5 Year Jumbo CD Rates.