Short interest is the number of shares that have been sold short but have not yet been covered or closed out. An increase in short interest can signal that investors have become more bearish, while a decrease can signal they have become more bullish. In this case, the rise in short interest in Cadence Design Sys's stock could indicate a bearish sentiment among investors. However, the fact that the company has less short interest than most of its peers could be a positive sign, indicating that investors are less bearish on Cadence Design Sys than on its peers.