Western Digital Corp. surged 14% to $653.53 on Monday, leading a broad rally in memory and storage stocks after the US and Iran reached a peace agreement that reopened the Strait of Hormuz and unleashed risk appetite across global equities.
"The Iran deal removes a major geopolitical overhang that had kept a lid on risk positioning," said Sarah Lin, equity market analyst at Edgen. "Memory stocks were already riding an AI-driven demand wave, and this gives traders cover to add exposure ahead of Micron's earnings next week."
Micron Technology Inc. climbed 11% to $1,087.99, SanDisk Corp. rose 6% to around $2,101, and Seagate Technology Holdings PLC gained 9.4% to $1,018.80. The Roundhill Memory ETF advanced 6.5%. Korean memory makers SK Hynix and Samsung Electronics also rose in overnight trading, reflecting the global nature of the move. The S&P 500 edged down 0.1% to 7,556, while the Nasdaq 100 slipped 0.2% to 30,479. The US 10-year Treasury yield fell 4 basis points to 4.12%, and oil prices tumbled as the deal cleared the path for resumed shipments through the Strait of Hormuz.
The rally extends what has already been a historic run for the memory complex. Western Digital has gained 227% year to date, Micron 244%, and SanDisk 734%. The AI data center buildout has driven structural demand for DRAM, NAND, and HDD components, creating shortages and pricing power across the supply chain. Micron's fiscal second-quarter revenue hit $23.86 billion, up 196% year over year, with GAAP gross margin expanding to 74%. Western Digital posted fiscal third-quarter revenue of $3.34 billion, with non-GAAP gross margin crossing 50% for the first time. SanDisk reported revenue of $5.95 billion, up 251% year over year, with datacenter revenue reaching $1.47 billion.
President Donald Trump said Sunday that a peace deal with Iran is complete, with a formal signing expected June 19. The agreement is expected to end months of conflict and reopen the Strait of Hormuz, sending oil prices lower and lifting equity futures into the open. The geopolitical catalyst amplifies an already powerful AI memory trade that has reshaped the semiconductor landscape, with memory becoming what Micron CEO Sanjay Mehrotra called "a strategic asset for our customers."
The next major catalyst for the sector is Micron's fiscal third-quarter earnings, scheduled for June 24 after market close. Polymarket traders are pricing in a 98% probability of an earnings beat. However, retail sentiment on StockTwits has turned bearish despite the rally, and Polymarket data shows just a 43% probability of Micron stock closing above $1,000 by month-end, pointing to consolidation risk after the parabolic run. Micron's trailing P/E ratio sits at 46x, but the forward P/E compresses to roughly 10x if guidance plays out, suggesting reasonable value if the AI memory cycle holds. For traders with existing memory exposure, today's geopolitical pop may warrant a fresh look at position sizing given how vertical the sector chart has become.
This article is for informational purposes only and does not constitute investment advice.