HBM Core Logic Invalidated [Must Sell] Two Major Signal Lists

Divided into Ultimate Technology Disruption Signals (Logic Completely Dead)

Cyclical Prosperity Peak Signals (This Market Cycle Ends)

As long as any one group appears

You must reduce holdings in SK Hynix, Samsung, and Micron.

I. Terminal Fatal Signals (If any 1 appears

Long-term clear out the Storage Big Three)

This is the core inflection point that completely overturns the rigid demand for HBM

Much more severe than a cyclical downturn:

1. NVIDIA officially announces the cancellation of the binding HBM architecture for its next-generation flagship GPU

The Feynman architecture after Rubin will completely switch to on-chip ultra-large SRAM + remote shared memory pool; single GPUs will no longer stack HBM stacks; only low-end inference chips will retain a small amount of HBM.

Currently, it is just reducing ordinary DRAM within cabinets. Once flagship training cards cut HBM, over 70% of the high-margin business of the Big Three will collapse directly.

2. GDDR8/New Distributed Memory Completes Bandwidth Overtaking

Low-cost wide-bit GDDR solutions, under 12.8T Scale-up bandwidth,

Power consumption and latency fully catch up with HBM;

Cloud providers batch-switch to low-cost solutions, and HBM premiums go to zero completely.

3. Co-packaged Optical Engine Built-in Memory Replaces External HBM

CPO optical chips directly integrate storage units; GPUs no longer need external stacked memory, and stacking processes completely lose their irreplaceability.

4. CXMT/Domestic Manufacturers Mass Produce Mature Products Benchmarking HBM5

The global HBM oligopoly pattern is broken, supply is completely oversupplied

HBM gross margin drops from 70%+ to within 15% of ordinary DRAM.

II. Cyclical Peak Signals

(This Storage Super Cycle Ends, Phase-based Selling)

Even if the technology route hasn't changed, you must retreat once the prosperity cycle is complete. Track 4 leading indicators:

1. HBM Long-term Contracts Begin Large-scale Cancellations

Cloud factories originally locked multi-year framework orders until 2027-2028,

Appear batch reductions in procurement volume;

This is a signal that precedes spot price increases.

2. DRAM/NAND Inventory Weeks Jump from Low Levels of 3-4 Weeks

To Above 12 Weeks The Iron Law of Storage Cycles:

Inventory bottoming out is the starting point of a bull market

Inventory returning to high levels is the starting point of a bear market;

The Big Three are forced to cut production and lower prices to destock

Profits decline quarter-on-quarter for two consecutive quarters.

3. HBM Contract Prices Show Month-over-Month Growth Below 3% for 2 Consecutive Months

Turning from rising to falling As long as the momentum for price hikes extinguishes

Storage stocks will peak 1 quarter early;

Even if sales volume is still rising, valuations will crash quickly.

4. Three Original Manufacturers Significantly Increase HBM Capital Expenditure

Fiercely building new stacking production lines All manufacturers collectively expand production

Oversupply will inevitably arrive in 2 years

In history, every major drop in storage begins with collective expansion.

III. Distinguish: Which News is False Panic, No Need to Sell

Many news items will only impact peripheral businesses, completely not affecting the core HBM foundation:

✅ Cabinet-local SSDs, Ordinary SOCAMM Memory Downgrades

(Normal architecture reconstruction, does not affect HBM)

✅ Special Edition Chips Switch to GDDR to Avoid Export Controls

(Limited to China's low-end special editions, global flagships still standardly equipped with HBM)

✅ Single Quarter Profit Slightly Below Market Expectations

(Short-term sentiment drop, does not change long-term rigid demand)

$Micron Tech(MU.US)$Sandisk(SNDK.US)

$SK Hynix(SKHY.US)