What Happened?

A number of stocks fell in the afternoon session after Anthropic released new models (Claude Fable 5 and Claude Mythos 5) which were described as built for "the hardest knowledge work and coding problems."

Mythos had been restricted for roughly two months under Project Glasswing, a managed rollout to select governments and enterprises designed to contain its cybersecurity risk profile before a wider release. That matters because the SaaSpocalypse thesis gets reinforced every time a more capable AI agent arrives. When Anthropic launched Claude Cowork in January, it triggered a $285 billion rout in software stocks in a single session, with Goldman's US software basket falling. This is another iteration of the same logic: if an agent available for $20 a month can now complete long-run, multi-step knowledge work, the case for more expensive per-seat enterprise subscriptions gets harder to defend with each new model generation.

Adding to the weakness, US Central Command confirmed an American Apache helicopter had gone down near the coast of Oman, and Trump said the US "must respond" to what he described as an Iranian attack over the Strait of Hormuz. The Apache helicopter incident gave the software sector a macro headwind on top of those pressures. Software is a long-duration asset, its valuation is rooted in future cash flows, making it particularly exposed to any development that firms up the case for sustained higher interest rates. An Iranian attack on US military assets over the Strait of Hormuz is precisely that kind of development.

The stock market overreacts to news, and big price drops can present good opportunities to buy high-quality stocks.

Among others, the following stocks were impacted:

• Video Conferencing company Five9 (NASDAQ: FIVN) fell 7.8%. Is now the time to buy Five9? Access our full analysis report here, it’s free.
• Advertising Software company AppLovin (NASDAQ: APP) fell 7.4%. Is now the time to buy AppLovin? Access our full analysis report here, it’s free.

Zooming In On Five9 (FIVN)

Five9’s shares are extremely volatile and have had 34 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 6 days ago when the stock dropped 4.5% on the news that software stocks declined for a second consecutive session, extending the profit-taking that began earlier in the week. 

The broader market was essentially flat when the correction started the previous day: the S&P 500 was unchanged, the Nasdaq barely moved, confirming this was sector-level digestion, not broad risk-off selling. 

To understand the pullback, you need to understand the depth of what preceded it. In a 48-hour span in early February 2026, roughly $285 billion was wiped from software stock valuations after Anthropic's Claude Cowork platform raised genuine fears that AI agents could make per-seat SaaS licensing obsolete, a moment the market called the "SaaSpocalypse." Over the following months, the IGV fell more than a third from its September 2025 peak, hitting a 52-week low on April 10. At that point, approximately 75% of software stocks were screening as technically oversold. 

The recovery was fast. The IGV rose 21% in May alone, its best monthly performance since October 2001, and gained approximately 40-44% from the April low. By June 2, it had crossed back into positive YTD territory for the first time, sitting approximately 11% below its all-time peak. Strong results from Snowflake and MongoDB gave the rebound fundamental cover. But the final push was options- and retail-driven, not institutional. On June 2, call volumes in the IGV outpaced puts, and Oracle options saw billions in premium trade with a three-to-one call-to-put ratio. 

That is the key to understanding why portfolio managers are likely not defending these levels. Most institutional managers who cut software exposure during the SaaSpocalypse would have faced a recovery that moved faster than their mandates allowed for rebuilding positions. Rather than chase, watching for a pullback and a better entry might be better. For those already positioned from the early recovery, the rational move was to let names reset before adding.

Five9 is up 12.7% since the beginning of the year, but at $21.21 per share, it is still trading 28.3% below its 52-week high of $29.56 from June 2025. Despite the year-to-date gain, investors who bought $1,000 worth of Five9’s shares 5 years ago would now be looking at only $130.86.

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