证券投资风险性排列

这里只讲投资，期权期货等投机产品不在范围中。证券投资按风险从大到小的排列是

1. Common stock - 股价波动大，风险高。

2. Common stock dividend - 当公司经营变坏，现金紧张时，会最先 cut common stock dividend

3. Preferred stock and its' dividend: 当公司经营更差时濒临破产时会停止支付 preferred stock dividend, Preferred stock price will eventually go worthless.

4. Corp Bond: 公司破产时会停止支付利息， bond price will decrease significantly. 但是在破产清算时， bond holder had priortity over preferrred stock holder. Bond holder may get something back from their investment.

5. 国债，违约可能极小，但也看那个国家，阿根廷国债曾多次违约，但投资人拿回的钱比公司债多。

6. Certificate deposit， FDIC insured up to $250,000 per account. 基本无风险。