Key Highlights

  • Palo Alto Networks was the best performer in the entire S&P 500, closing around $392.
  • Coverage tied CrowdStrike's gain to that AI-agent safety theme and did not point to any company-specific news.
  • BTIG's Gray Powell raised his Palo Alto Networks price target to $425 from $404 and kept a Buy rating.
  • Micron's results on Wednesday evening will also set the tone for the wider AI trade this week.

While most of tech sank on Monday, September 28, Palo Alto Networks (NASDAQ:PANW) and CrowdStrike (NASDAQ:CRWD) climbed as AI safety jumped to the top of the agenda.

Green shoots in a red market

Monday, September 28 was a grim day for most of the stock market. The S&P 500 fell 59.72 points to 7,683.69, decliners outnumbered advancers 2,054 to 678 on the NYSE, and only 125 of the S&P 500's 503 members managed to rise. Yet one corner of technology bucked the trend: cybersecurity.

Palo Alto Networks was the best performer in the entire S&P 500, closing around $392. CrowdStrike also climbed. On a day when chips, software and internet stocks were sold hard, the security names stood out as rare winners.

Nvidia puts safety on the map

The spark came from Nvidia (NASDAQ:NVDA). Alongside a record $150 billion boost to its share buyback, the chip giant launched the Nvidia Open Agent Safety Platform, a set of guardrail tools for AI agents that includes OpenShell and Nvidia Sentry. Partners named in coverage include Palo Alto Networks, Anthropic, Microsoft (NASDAQ:MSFT), Palantir (NASDAQ:PLTR), Salesforce (NYSE:CRM) and JPMorgan (NYSE:JPM).

Chief executive Jensen Huang framed the stakes plainly, saying AI's potential "will only be realized if we solve AI safety." AI agents are software programs that can take actions on their own, such as running code or moving data, which makes controlling what they can and cannot do a central security question.

The OpenAI backdrop

The theme gained extra urgency from the weekend's headlines. Reports that OpenAI paused Training of some frontier models hammered chip stocks on fears of slower AI spending, but they also put a spotlight on why companies may want stronger defenses around autonomous AI systems.

For Cybersecurity investors, the logic was straightforward: if AI agents are becoming more powerful, Demand for tools that monitor and restrict them could grow. Coverage tied CrowdStrike's gain to that AI-agent safety theme and did not point to any company-specific news.

An analyst tailwind for Palo Alto

Palo Alto Networks also had its own catalyst. BTIG's Gray Powell raised his price target to $425 from $404 and kept a Buy rating, forecasting strong pro forma Revenue growth. Combined with its role as a partner in Nvidia's safety platform, that gave the stock two reasons to rally on a down day. That is the analyst's view, and future results will test it.

The rally stood in sharp contrast to the rest of software. Meta (NASDAQ:META)'s launch of an enterprise AI platform hit Salesforce, ServiceNow (NYSE:NOW), Atlassian (NASDAQ:TEAM) and Snowflake (NYSE:SNOW), while MongoDB (NASDAQ:MDB) plunged by roughly a fifth after its chief executive left to join Meta. DA Davidson downgrades weighed on BlackLine (NASDAQ:BL) and UiPath (NYSE:PATH). Security was the exception to the rule.

Rates still loom

Even the winners face the same macro headwinds as everyone else. The 10-year Treasury Yield hit its highest level since 2007 on Monday, and futures price a strong majority chance of another Federal Reserve hike in October. Higher rates tend to weigh on growth stocks, including security software, so the sector's resilience will be tested if yields keep climbing.

Whether the AI-safety theme has staying power

Watch whether the AI-safety theme has staying power beyond a single session. OpenAI's DevDay on Tuesday could bring new details on agent tools and safeguards, and any further news on the reported training pause could keep security in focus.

On the macro side, Tuesday's Job Openings and consumer confidence data, Wednesday's PCE Inflation report and Friday's September jobs report will shape yields. Micron (NASDAQ:MU)'s results on Wednesday evening will also set the tone for the wider AI trade, which could either lift all boats or reopen the gap between security and hardware.