What Happened?

Shares of infrastructure engineering software company Bentley Systems (NASDAQ: BSY) jumped 5.3% in the morning session after the company was set to be added to the S&P MidCap 400 index. This inclusion, effective before the market opened on Monday, October 6, meant that investment funds tracking the index needed to purchase the company's shares. Such buying activity often leads to increased demand and a higher stock price due to the added visibility. Bentley Systems replaced Western Union in the mid-cap index. Western Union, in turn, moved to the S&P SmallCap 600. The changes in the indexes were prompted by the completed acquisition of Mr. Cooper Group by Rocket Companies.

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What Is The Market Telling Us

Bentley Systems’s shares are not very volatile and have only had 2 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful, although it might not be something that would fundamentally change its perception of the business.

Bentley Systems is up 18.7% since the beginning of the year, and at $55.21 per share, it is trading close to its 52-week high of $58.72 from July 2025. Investors who bought $1,000 worth of Bentley Systems’s shares 5 years ago would now be looking at an investment worth $1,830.

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