The number that moved the tape Thursday was 18. Workday shares jumped nearly 18% after Reuters reported that Silver Lake is in acquisition talks with the human-resources and financial-management software company, pushing its market value above $51 billion. The case for a broader software rerating is real. The risk is that one deal in progress is not the same as one deal done.
The sector has been under pressure all year from fears that AI tools capable of generating code and building applications will erode demand for traditional software services. The S&P 500 Software and Services index had absorbed that narrative, and the short community had the discount priced in. Against that backdrop, Silver Lake circling Workday at what would need to be a substantial premium carries weight.
Brian Mulberry, client portfolio manager at Zacks Investment Research, said that if Silver Lake completes a deal at a substantial premium, it would be "one of the strongest pieces of evidence yet that the public market has overshot in discounting traditional enterprise software because of AI." Morgan Stanley analysts added that a completed acquisition would validate Workday's "strong moat and large opportunity to automate the back-office that can be unlocked over time." The read-through ran across the sector. SAP led European software stocks higher Friday. U.S. names including Salesforce, Adobe, and ServiceNow gained between 1.9% and 4.5% the session before. Strong recent earnings from ServiceNow have started making the argument independently: software embedded in HR, customer relationship management, and finance is stickier than the AI-disruption thesis allows, because swapping those systems is costly and operationally disruptive.
The counterargument is straightforward. A buyout rumor is not a buyout. Silver Lake and Workday have not confirmed a deal, and the premium that would signal a genuine floor for software valuations does not exist until a signed agreement produces one. Morgan Stanley framed the broader benefit as contingent on what the report "could also inspire": more financial sponsors regaining confidence in software investing, shorts retreating, and the market concluding these businesses have gotten too cheap relative to their future value. That is a chain of events, not a price.
On balance, the S&P 500 Software and Services index is already up roughly 25% quarter-to-date, which means the market has done some of the rerating work without a deal in hand. The line to watch is whether a signed agreement materializes and at what price relative to Workday's current market value above $51 billion.