What Happened?
Shares of collaboration software company Atlassian (NASDAQ: TEAM) jumped 15.4% in the afternoon session after a two-day wave of AI conviction, sparked by Snowflake's best single-session day on record and extended by Dell's blowout earnings continued to weaken the narrative that weighed on the software sector.
Snowflake's Q1 results sent the stock up 36% on May 28, its strongest single-day gain since its 2020 IPO, showing that AI is accelerating demand for enterprise data platforms rather than cannibalizing them. Then Dell's Q1 report, published after the bell on May 28, confirmed the physical infrastructure layer is expanding at a scale most analysts had not modelled: $43.8 billion in revenue, up 88% year-over-year, AI server revenue of $16.1 billion up 757%, and a record AI backlog of $51.3 billion.
The combined read-through was hard to ignore: enterprises are deploying AI at scale, and they need both the software layer and the hardware stack to do it. A supportive macro backdrop provided additional lift. The 10-year Treasury yield fell to 4.45% on reports of a US-Iran truce extension, reducing the discount rate on long-duration growth stocks.
The shares closed the day at $107.64, up 15.4% from the previous close.
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What Is The Market Telling Us
Atlassian’s shares are extremely volatile and have had 34 moves greater than 5% over the last year. But moves this big are rare even for Atlassian and indicate this news significantly impacted the market’s perception of the business.
The previous big move we wrote about was 1 day ago when the stock gained 4.7% on the news that SaaS peer, Snowflake reported impressive first quarter results.
Snowflake's impressive AI accounts growth validates the core insight from Atlassian's Q3: enterprises are not shrinking their software footprint as AI grows, they are expanding it. Atlassian's bear case through 2025 and early 2026 was the same as SNOW's: that AI would displace the platform rather than run on it. Both companies' recent results demolish that thesis from different angles.
When SNOW's CEO describes Cortex Code compressing data pipeline build times, those development projects are tracked in Jira, collaborated on in Confluence, and increasingly managed by Rovo agents assigned directly to Jira tickets, Atlassian's newly launched agent orchestration layer makes it the coordination system for exactly the AI workloads SNOW says are accelerating.
Atlassian is down 30.5% since the beginning of the year, and at $107.60 per share, it is trading 51.3% below its 52-week high of $220.89 from July 2025. Investors who bought $1,000 worth of Atlassian’s shares 5 years ago would now be looking at only $463.83.
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