AI Stocks & Markets
Sep 21, 2026

The Gist
AI chip demand is still driving the market, with Broadcom’s $230 billion AI outlook now outpacing Nvidia’s growth and KLA looking 24% undervalued on its AI backlog, while Berkshire’s 48 million Alphabet buy makes it a top-three holding. At the same time, investors are getting pickier: Aehr Test Systems fell 15.2% even as KLA rose 11.7%, and Palantir’s most-followed valuation view puts it 3% overvalued at $171.06 versus its $176.18 close.
Today's Stories
- 1
KLA fair value $232.43 sees 24% undervalued on AI backlog
Simply Wall St's most-followed KLA narrative sets fair value at $232.43 versus a $176.99 close, with the stock up 4.74% last session but down 34.24% over 90 days. That gap frames the AI equipment debate in pricing terms, and bulls lean on KLA's AI-driven backlog and profit base to argue the retreat is overdone.
The bull case hinges on whether tariffs and any further China revenue slowdown undercut the backlog story. Note KLA's 47.9x P/E is above peers at 45.3x and the 39.9x fair ratio.
- 2
Broadcom's $230 billion AI chip outlook outpaces Nvidia's 70% growth
Broadcom projected roughly $58 billion in AI semiconductor revenue for fiscal 2026, about $115 billion in fiscal 2027 and $230 billion in fiscal 2028, while Nvidia guided fiscal 2028 total revenue growth of about 70%. Broadcom's forecast implies two consecutive doublings and is the more aggressive of the two outlooks, though its AI business relies on a smaller number of massive custom-chip customers, which carries greater risk if a major buyer pulls back.
The headline growth rate may not tell the whole story — Nvidia's slower-but-broader expansion, spanning cloud giants, governments, start-ups and enterprises, could prove more durable over the long run. Watch whether Broadcom's concentrated customer base holds up.
- 3
Berkshire's 48 million Alphabet buy makes it third-largest holding
Berkshire Hathaway's latest 13F filing, covering holdings as of June 30, shows it bought more than 48 million Alphabet shares across both share classes in Q2, making Alphabet its third-largest stock position at about 12.6% of its equity portfolio. A roughly 12.6% portfolio weight is a strong signal of confidence in Alphabet from a conglomerate known for long holding periods.
The filing data is as of June 30 and may be outdated; the test is whether Berkshire keeps or adds to the Alphabet stake in future disclosures.
- 4
Aehr Test Systems slips 15.2% as KLA grows 11.7%
Aehr Test Systems reported FY2026 revenue of $50.0 million, down 15.2% from the prior year, and a net loss of $7.1 million. KLA posted FY2026 revenue of $13.6 billion, up 11.7%, with $4.8 billion in net income. The two AI-linked chip-equipment suppliers moved in opposite directions: Aehr's smaller, specialized business shrank and lost money, while KLA's larger, diversified operation grew profitably.
Whether Aehr's bet on silicon carbide and high-bandwidth memory can turn its negative $5.4 million free cash flow around, while KLA's Taiwan Semiconductor Manufacturing Company relationship, more than 10% of its revenue, remains a concentration risk.
- 5
Palantir's most-followed narrative says 3% overvalued at $171.06 vs $176.18 close
After AI partnerships with Method Security, NVIDIA and Nebius, Palantir's most-followed fair-value narrative put it at $171.06 versus a $176.18 last close, calling it 3% overvalued, while a DCF model saw it 5.8% below a $187.06 cash-flow value. With the price already above the crowd's fair value but below the cash-flow estimate, investors holding the stock face a debate over whether that premium can be supported, and the body notes valuation could unravel quickly if execution stumbles.
The split hinges on which lens investors trust more — the crowd's user-driven narrative or the DCF's cash-flow estimate. The central figure to track is the $176.18 last close against those two fair-value marks.
- 6
Qualcomm AI Pivot Article Contains Only Disclosures
The article titled 'Qualcomm's AI Pivot Has A Problem' contains no reporting; its body is limited to an analyst disclosure and a Seeking Alpha disclosure. Readers looking for Qualcomm's AI strategy details will find none — the body offers no facts, figures, or claims about the company.
This item provides no dates, numbers, or events to track; any Qualcomm AI news would have to come from a different source.
What to Watch
Going forward, watch whether tariffs or a further slowdown in China revenue undercut KLA's backlog story, especially given its rich valuation, and whether Nvidia's broader, slower-growing customer base proves more durable than Broadcom's more concentrated one. Also keep an eye on whether Berkshire keeps or adds to its Alphabet stake in future filings, whether Aehr can turn its negative free cash flow around, and whether the crowd's narrative or the cash-flow-based estimate wins out for the stock trading near $176.18.
Sources
- KLA (KLAC) Could Be 24% Undervalued On AI Demand And Backlog Growth
- Nvidia vs. Broadcom: Whose AI Revenue Actually Grows Faster From Here?
- Berkshire Hathaway's Favorite Artificial Intelligence (AI) Stock Looks Like a Genius Buy Now
- Better Artificial Intelligence Stock: Aehr Test Systems vs. KLA Corporation
- Palantir Technologies (PLTR) AI Deal Rush Meets A Fair Value Debate
- Qualcomm’s AI Pivot Has A Problem (NASDAQ:QCOM)
- Vertiv (VRT) Stock Stays Fairly Priced Following Its $2.6B AI Power Deal
- Western Digital Falls 4% Despite Its AI Storage Pitch; Seagate Drops 5%, Micron Holds Steady
- Is Analog Devices (ADI) A Bargain Following The AI Chip Sector Pullback?
- CrowdStrike, Palo Alto and 3 More Cybersecurity Stocks to Buy for the AI Boom
- Better Artificial Intelligence Stock: Advanced Micro Devices vs. SK Hynix
- The Caterpillar Correction Shouldn't Last Much Longer
- 3 AI Hardware Stocks Linked To Nvidia And US China Trade Talks
- Why You Should Avoid Palantir and Buy These 2 Defense Stocks Instead
- Prediction: Anthropic's IPO Will Be a Big Winner for Alphabet and Amazon Investors
- Following OpenAI, Anthropic is also reportedly postponing its IPO
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