SK hynix Snaps Back After Institutional Shakeout, But Can AI Hype Alone Justify a Stock That Has Doubled in Weeks?

Shares of SK hynix surged 5.7% to €1,400 on June 1, clawing back losses from a prior session's forced selling episode — the kind of violent swing that raises a basic question for investors: is the AI memory trade built on fundamentals, or just momentum chasing momentum? SK hynix Snaps Back 5.7% After Institutional Shakeout, But Can a Trillion-Dollar Chipmaker Keep Running on AI Fever Alone?

Shares of SK hynix jumped 5.7% to €1,400 on June 1, recovering from the prior session's 4% drop to €1,325 that traders blamed on forced selling — large funds dumping shares not because the thesis broke, but because the stock had rallied so fast it triggered automatic portfolio rebalancing. The whiplash captures a stock caught between genuine AI-driven earnings power and the risk of a crowd that has pushed it up roughly 900% in twelve months.

• The Anthropic Deal Gives SK hynix a Seat at AI's Top Table — SK hynix took a strategic stake in Anthropic as part of a $65 billion funding round that valued the AI startup at $965 billion, making it the world's most valuable AI company ahead of OpenAI.

For SK hynix, the investment is seen as a defensive strategy to gain early insights into future memory requirements for AI models and secure a first-mover advantage in next-generation chip specifications. Translation: SK hynix is paying for a direct line to its biggest future customer's roadmap — a bet that engineering collaboration, not just sales calls, will lock in orders years ahead.

• The Numbers Behind the Hype Are Real — For Now — SK hynix reported a massive earnings beat with a five-fold profit jump in Q1 2026, driven by insatiable demand for high-bandwidth memory chips.

Production of its current-generation memory is already sold out for 2026, with orders for 2027 piling up — a supply crunch that lets the company command premium pricing.

Bank of America estimates the 2026 high-bandwidth memory market at $54.6 billion, a 58% increase from the prior year.

• The Valuation Still Looks Cheap — On Paper — SK hynix's price-to-earnings ratio — how many years of current profit the stock price reflects — hovers around 7, versus 22 for the S&P 500 average. That gap suggests the market still expects these profits to be cyclical, not permanent. If AI demand sustains through 2028 as analysts project, the stock could be dramatically undervalued; if memory prices mean-revert, the premium evaporates fast.

• Two Competitive Threats Loom Behind the Rally — Chinese rival CXMT has doubled its global DRAM market share to 8% in one year, undercutting Korean makers by 15–20% on standard products, and just passed its IPO review to raise roughly 295 billion yuan. Meanwhile, Samsung's next-generation HBM4 yield sits below 60%, while SK hynix has reached 80% — an edge, but one Samsung is racing to close. Shareholders are betting the lead holds. The shakeout suggests not everyone is sure.