speed is the rate at which an MBS prepays. An MBS with little or no prepayments is said to have a slow speed. An MBS with significant prepayments is said to have a high speed or to be speeding. Since pools that prepay faster than anticipated can perform much worse than investors hoped, investors only half jokingly say that speed kills. See: CPR, prepayment estimate, and PSA for information about measures of speed.
Barry Goldsmith
| APA | Barry Goldsmith. (2010). speed. Retrieved September 22, 2026, from http://smartdefine.org/speed/definitions/1163898 |
| Chicago | Barry Goldsmith. 2010. "speed" http://smartdefine.org/speed/definitions/1163898 (accessed September 22, 2026). |
| Harvard | Barry Goldsmith 2010, speed, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/speed/definitions/1163898>. |
| MLA | Barry Goldsmith. "speed" 21 October 2010. Web. 22 September 2026. <http://smartdefine.org/speed/definitions/1163898> |