AMD Hit $1 Trillion. Insiders Sold $109 Million First

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AMD Hit $1 Trillion. Insiders Sold $109 Million First
Alpha Market Alerts September 22, 2026 | Read online
 
AMD Hit $1 Trillion. Insiders Sold $109 Million First.
 
The chipmaker nearly tripled this year and crossed $1 trillion in one session. At 158 times earnings, the question is what you're paying for — and what your index fund already bought.
 
KEY POINTS
 
AMD touched $1 trillion Monday, up about 10% in a single session.
Shares are up more than 180% this year and roughly 25% in five days.
The stock trades near 158 times trailing earnings.
Insiders sold $108.9 million over three months. You can see every filing.
 
Advanced Micro Devices (NASDAQ: AMD) added roughly $90 billion in market value on Monday. One session.
That's more than most S&P 500 companies are worth, added in about six and a half hours, and it pushed AMD past $1 trillion for the first time.
The trigger was an app climbing Apple's download chart.
And over the prior three months, AMD insiders sold $108.9 million of stock. Worth holding both facts in your head at once. Your index fund does.
 
 
 
Where AMD Stands Today
 
The facts as of Monday's session:
•Market value touched $1 trillion — the fourth US chipmaker there, after Nvidia, Broadcom and Micron
•Shares up about 25% in five sessions and more than 180% this year
•Trailing price-to-earnings near 158 times, against a five-year median around 102
•Insider sales of $108.9 million over the past three months
•Last month, an earnings beat with a forecast that disappointed, and a slide after it
 
Two of those numbers explain the stock. But the other two explain the risk.
The 180% came from surging data center revenue and a growing belief that AMD is the credible second supplier of AI chips behind Nvidia. And the 158 times prices that belief as permanent. It might be.
If you own a broad index fund, you already own more AMD than you did last Tuesday, whether or not you'd have chosen it.
 
AMD one-year candlestick chart
A year that nearly tripled, with one sharp drawdown
 
 
 
The Case Against Paying This
 
Start with who's selling. AMD insiders sold $108.9 million of stock over the past three months.
Last Thursday this letter argued that sales mean less than purchases, because a sale can have routine explanations that a purchase doesn't, and that still holds here. So the selling proves little on its own, and you shouldn't read more into it.
But the valuation is the real case. At roughly 158 times trailing earnings, the stock is priced for years of growth that hasn't been reported yet. The August quarter beat, and the stock fell anyway, because the forecast wasn't enough for the people setting your price.
And Monday's catalyst was a consumer app reaching the top of Apple's download chart. Not an order. Not a contract.
A ranking — and $90 billion of market value moved on it before you'd finished your coffee.
 
 
 
Why It Might Be Worth It
 
Data center revenue has more than doubled from a year ago, reports indicate. That's the number your bull case rests on — a result, not a forecast.
The rest follows from position. Nvidia is worth roughly $5.4 trillion; AMD, even after Monday, about a fifth of that. If you believe AI buyers want a second source of chips — and every large buyer wants a second source of everything — AMD is the most obvious candidate. Intel, which rose 12% on Monday, is worth about $640 billion.
And the stock's already survived one test this year. It fell roughly 26% from June highs, then climbed to a record in September — the kind of drawdown that tests whether you'd actually hold.
Nearly tripled. After a 26% drawdown.
For you, the bull case fits in a sentence: second place in a market this size is still a very large business.
 
 
 
Where The Numbers Actually Land
 
AMD pays no dividend. For Band 3 income holders, your only return is price — bought at 158 times earnings.
For Band 1 holders compounding, the question for you is simpler and harder: whether data center growth keeps doubling long enough to grow into the multiple before the next forecast disappoints.
Micron reports September 30. Same buyers.
The trillion is a milestone. Your return depends on what follows it.
 
 
 
What to Watch
 
Two dates. Micron reports Wednesday, September 30 — confirmed by the company — and it sells into the same AI buyers AMD does, so its commentary is the nearest read you'll get before AMD's own quarter. September CPI lands October 14 and sets the tone for your rates.
But the risk that cuts against Monday is rates themselves. The 10-year touched 5.04% last week, and a stock priced at 158 times earnings sits among the most rate-sensitive holdings in your portfolio.
 
 
 
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