Tech companies are giving the world artificial intelligence — but ironically, the tech sector itself is among those now feeling the most pain from AI.

The rise of AI tools that can write and develop code is clouding the outlook for the software industry, investors say, sending shares in those companies into a slump.

Software as a service, or “SaaS,” is a bread-and-butter business model that is now at risk of disruption because of AI, investors say, a microcosm of how AI could upend the way many businesses operate.

Shares in software giant Salesforce (CRM) are down 26% this year, making it the second-worst performing stock in the Dow.

Meanwhile, Adobe (ADBE) shares are down 19% this year. Shares in Atlassian (TEAM), which owns applications like Trello, are down 30% over the same time.

In comparison, the benchmark S&P 500 is up 10% this year, while the tech-heavy Nasdaq Composite is up 11%.

“Software valuations remain under pressure from the ‘death of software due to AI’ narrative, which likely drives continued volatility in the short term,” Matthew Hedberg, a software research analyst at RBC Capital Markets, said in an August 12 note.