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Broadcom stock slid 4.2% in mid-day trading to $364.13 after Marvell Technology announced a landmark custom AI chip agreement with Google, sparking concerns over Broadcom's future share of spending from one of its most important AI customers.
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Broadcom's stock has been steadily losing ground, with shares down about 12% over the past seven trading sessions. The company is scheduled to report earnings on September 2, 2026, but analysts remain cautious. TD Cowen reiterated a Buy rating and $500 price target, but Broadcom's stock has been trading at elevated valuation multiples.
The Marvell-Google deal has raised concerns over Broadcom's exposure to the custom AI silicon market. Google received warrants to purchase up to 58.97 million Marvell shares at $206.58 apiece, giving Marvell a strong incentive to deepen the relationship over time. This deal has compounded the selloff, which also follows concerns surrounding a critical VMware vCenter vulnerability and substantial insider stock liquidations exceeding $1.19 billion over the trailing twelve months.
## Background
Broadcom has been pouring money into expanding its AI operations through a financing platform with Apollo and Blackstone. The related financing vehicle could eventually reach $370 billion in senior debt by mid-2029. Despite this, Broadcom continues to post the fastest AI growth in the semiconductor industry.
## Market Sentiment
The broader market has been providing no tailwind, with the S&P 500 and Nasdaq each posting only marginal gains on the day. This has left Broadcom as a clear underperformer within the semiconductor space, with shares trading well below their 52-week high of $495.
## Conclusion
The confluence of a direct competitive threat from the Marvell-Google custom chip deal, mounting concerns over Broadcom's AI financing exposure, an unresolved enterprise software security issue, and heavy insider selling has created a potent mix of negative sentiment. Investors appear to be repricing the risk that Broadcom's dominant position in the custom AI silicon market may face more serious competition than previously anticipated.
