TLDR
- Seagate stock fell 7.1% after a broad selloff hit memory and storage names, triggered by a report that SK Hynix is slowing HBM expansion
- South Korea’s KOSPI dropped 10% and halted trading, with SK Hynix and Samsung both falling more than 10%
- A hawkish Fed repricing under new Chair Kevin Warsh pushed market-implied odds of a second 2026 rate hike to ~85%
- Fox Advisors downgraded Seagate to Equal-Weight, adding pressure after the stock hit fresh all-time highs
- Wedbush called the drop a buying opportunity, saying enterprise demand remains intact
Seagate Technology (STX) was trading at $958.94 before Tuesday’s session saw the stock drop 7.1%, pulled lower by a wave of selling across the memory and storage sector. The decline came on top of a 6% drop the day before, giving the stock back-to-back losing sessions after a remarkable run higher.
Seagate Technology Holdings plc, STX
The immediate trigger was a local South Korean media report suggesting SK Hynix is slowing its high-bandwidth memory (HBM) expansion and shifting capacity toward conventional DRAM. SK Hynix declined to comment, but the market didn’t wait for clarification.
The reaction was swift. South Korea’s KOSPI index, which had been up roughly 95% year-to-date, fell 10% and halted trading. Both SK Hynix and Samsung dropped more than 10% on the session.
The read from most analysts is that this is a margin story, not a demand story. Conventional DRAM shortages have pushed operating margins above those of HBM production, with Korean analysts estimating a gap of more than 15 percentage points. Samsung flagged a 146% DRAM ASP jump in Q1, with SK Hynix reporting mid-60% gains.
Still, HBM is the memory embedded in Nvidia’s AI accelerators. Any headline suggesting a “slowdown” in HBM production instinctively triggers fears the AI build-out is losing steam — and that reflex selling hit Seagate hard.
Rate Fears Add Pressure
Compounding the sector pain was a hawkish shift in Fed rate expectations. Under new Chair Kevin Warsh, market-implied odds of a second 2026 rate hike rose to roughly 85%, up from around 60%. Traders pricing in 50 basis points of hikes by December makes debt-funded AI capital spending harder to justify at current valuations.
The divergence in the selloff told a clear story: memory names bore the brunt. Micron fell approximately 11%, while logic-heavy Nvidia dropped only around 3.6%.
Fox Advisors added a downgrade to Equal-Weight during the session, citing an overbought chart after Seagate’s run to all-time highs. That technical pressure added fuel to an already volatile day.
Wedbush pushed back on the bearish narrative, calling the drop a buying opportunity with enterprise demand they view as intact.
Context on the Run
Seagate had surged 233% since the start of the year heading into the drop, setting a new 52-week high at $958.94. For context, Micron had risen approximately 300% from the start of the year before Tuesday’s session.
The stock has had 49 moves greater than 5% over the past year, making the size of Tuesday’s move notable but not unusual by its own standards.
Investors who put $1,000 into Seagate five years ago would be sitting on roughly $11,100 today.
All eyes were on Micron’s earnings after Tuesday’s close, with the whole memory complex holding its breath for guidance on AI data-center demand.
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