1、Treasury bills（国库券）
- 短期，在一年或者更短的时间内成熟
- commonly issued with maturity dates of:一般发行的到期日有：
- 28days(or 4weeks ,about a month)
- 91days(or 13weeks ,about 3 months)
- 182days(or 52 weeks,about 1year)
2、Treasury notes（T-Notes）
- 在两到十年内成熟
- 每六个月支付一张优惠券
- 通常发行的到期日为：
- 2年
- 3年
- 5年
- 10年
3、Treasury bonds(T-Bond) （国债）
- long term bond（长期债券）
- have the longest maturity from twenty years to thirty years（最长的成书时间是20-30年）
- have a coupon payment every six months（每6个月支付一张优惠券）
4、Treasury Inflation Protected Securities (TIPS) （国库通胀保护证券）
the inflation-indexed bonds issued by the U.S. Treasury（美国财政部发行的通胀指数债券）
The principal is adjusted to the Consumer Price Index(CPI)（本金调整为消费者价格指数）
TIPS are currently offered in 5-year, 10-year and 30-year maturities（目前提供5年，10年和30年到期的TIPS）
5、
Agency Bond(AGY/ADN)（代理商保证券）
A bond issued by a government agency. These bonds are not fully guaranteed in the same way as U.S. Treasury and municipal bonds.
They include such agencies as Fannie Mae, Freddie Mac, Sallie Mae and the Federal Home Loan Banks.
Canadian Bonds
A bond issued by Canadian government.
When Issued(WI)/Re-Issued(RI)
Securities trade on a when issued basis when they have been announced, but not yet issued. The transaction is settled only after the security has been issued.