The $2.93 billion sale is aimed at Japanese retail investors, with the products carrying a coupon rate of 3.22 per cent.
A launch spread of 207.73 basis points above three-year swap rates is also attached to the bonds, which have been rated Aa3 by Moody's and AA- by Standard & Poor's.
Samurai bonds are yen bonds issued in Japan from foreign financial firms.
Several large Wall Street firms are thought to be looking to Japan in a bid to restore their battered balance sheets - with high-yielding bonds very popular among investors in the Asian nation.
Citi's last issue was in June, while Goldman Sachs also launched a sale of samurai bonds in January 2008.
Claims that the latest samurai bonds issue is the biggest-ever has been derived from Thomson Reuters data, CNBC reports.