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1. An improvement to an existing product. Some companies, especially technology companies, offer upgrades to customers for free or at a discount.

2. An improvement to the quality of securities in a portfolio. For example, one may sell a stock with a given risk and return and buy another stock with a higher return at the same level of risk. Alternatively, a security may upgrade by itself; for example, its issuer may announce higher than expected earnings, and, therefore, a higher dividend.

3. An increase in a bond rating. For example, if a bond goes from a junk rating to an investment-grade rating, the bond is said to be upgraded. This usually occurs when the issuer reduces its exposure to one or more risks.


to replace an existing COMPUTER system (HARDWARE and/or SOFTWARE) by a more powerful model capable of processing data faster or storing larger amounts of data. When upgrading, computer users can experience problems of compatibility with existing programs and machines.
References in periodicals archive ?
data) and be software upgradeable to accommodate enhancements like new modulation or QoS standards.
The end product was a configurable and upgradeable platform for battlefield optronics with real-time performance, compact form factor and low power consumption.
It is software upgradeable to full-fabric support, which future-p roofs the investment in the switch as the SAN grows, and provides port-level fault isolation for reliability in loop environments.
The ConnectPort WAN VPN is the first commercial grade, upgradeable, 3G wireless wide area network (WWAN) router that provides a secure, high-speed WWAN connection for reliable primary and backup network connectivity to remote sites and devices.
Uniquely, the company also delivers complete, standard-compliant reference designs for UMTS (HSDPA, upgradeable to HSUPA) and WiMAX/WiBro (both 802.