# AI eats all the memory, phone makers pay the bill

By gautham · https://f.xyz/t/5a071c8b-8953-474e-b91e-d879a35f5730

> Memory chip makers selling out at higher and higher prices proves AI demand is real, not hype.

**Result:** If held over the last 3 months (Jul 30, 2026 – Oct 29, 2026): +7.1%. Over the same days: Chip stocks +10.8%, S&P 500 +5.1%.

## What it holds

- **The memory makers** (55%, +13.9% over 3 months): MU (Micron) +31.4%, SKHY (SK Hynix) +23.3%, SMSN (Samsung) +21.3%, SNDK (SanDisk) +34.7%, KIOXIA (Kioxia) −61.7%, WDC (Western Digital) −17.2%
- **The AI buyers and builders** (20%, −2.4% over 3 months): NVDA (Nvidia) +14.2%, LRCX (Lam Research) −27.3%, AMAT (Applied Materials) −10.9%
- **Who pays the bill** (15%, −4.1% over 3 months): against XIAOMI (Xiaomi) −5.9%, against AAPL (Apple) −1.9%
- **Cash** (10%)

## The idea

If AI demand is real, the clearest proof is the companies selling the memory, and they win the most. Most of the money is in the memory makers: Micron, SK Hynix, Samsung, SanDisk, Kioxia and Western Digital. A smaller group holds Nvidia, the biggest memory buyer, plus Lam and Applied Materials, who sell the machines memory makers need to build more. A small short bets that phone makers get squeezed as memory costs more. Some cash is kept in case chip stocks swing hard.

**What would prove it wrong:** Memory prices start falling or big tech cuts AI spending, which would show the demand was never as big as it looked.

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