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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 ?
Xilinx Online field upgradable solutions will be targeted at emerging network appliances, such as multi-use set top boxes, mobile network devices, security systems and process controllers, and in network equipment, such as ATM, cellular base stations, and satellite communications systems.
IRL is the backbone for creating Xilinx Online field upgradable applications, and we expect these new products to provide tremendous new levels of flexibility for our customers' customers.
NASDAQ:XLNX) announced today the Xilinx Online program to enable, identify, and promote field upgradable applications based upon the award winning Internet Reconfigurable Logic (IRL) methodology from Xilinx.